eulxml

eulxml is an extensible library for reading and writing XML documents in idiomatic Python. It allows developers to map predictable XML node structures to XmlObject subclasses, using field definitions to map XPath expressions directly to Python attributes.

For projects using Django, it also provides utilities for exposing XmlObject instances to web users with XmlObjectForm. As a bonus, EULxml happens to include an XPath parser in eulxml.xpath.

Contents

eulxml.xmlmap – Map XML to Python objects

eulxml.xmlmap makes it easier to map XML to Python objects. The Python DOM does some of this, of course, but sometimes it’s prettier to wrap an XML node in a typed Python object and assign attributes on that object to reference subnodes by XPath expressions. This module provides that functionality.

XmlObject Instances

eulxml.xmlmap.eadmap - Encoded Archival Description (EAD)

General Information

The Encoded Archival Description (EAD) is a a standard xml format for encoding finding aids. For more information, please consult the official Library of Congress EAD site.

This set of xml objects is an attempt to make the major fields of an EAD document accessible for search and display. It is by no means an exhaustive mapping of all EAD elements in all their possible configurations.

Encoded Archival Description

LOC documentation for EAD element

Nearly all fields in all EAD XmlObjects are mapped as eulxml.xmlmap.XPathString or eulxml.xmlmap.XPathStringList, except for custom EAD sub-objects, which are indicated where in use.

class eulxml.xmlmap.eadmap.EncodedArchivalDescription(node[, context])

XmlObject for an Encoded Archival Description (EAD) Finding Aid (Schema-based). All XPaths use the EAD namespace; this class can not be used with non-namespaced, DTD-based EAD.

Expects node passed to constructor to be top-level ead element.

abstract = <eulxml.xmlmap.fields.NodeField>

collection level abstract - archdesc[@level=”collection”]/did/abstract

archdesc = <eulxml.xmlmap.fields.NodeField>

ArchivalDescription - archdesc

author = <eulxml.xmlmap.fields.StringField>

record author - eadheader/filedesc/titlestmt/author

dsc = <eulxml.xmlmap.fields.NodeField>

SubordinateComponents archdesc/dsc; accessible at top-level for convenience

eadid = <eulxml.xmlmap.fields.NodeField>

ead id EadId - eadheader/eadid

file_desc = <eulxml.xmlmap.fields.NodeField>

FileDescription - filedesc

id = <eulxml.xmlmap.fields.StringField>

top-level id attribute - @id; preferable to use eadid

physical_desc = <eulxml.xmlmap.fields.StringField>

collection level physical description - archdesc[@level=”collection”]/did/physdesc

profiledesc = <eulxml.xmlmap.fields.NodeField>

ProfileDescription - profiledesc

title = <eulxml.xmlmap.fields.NodeField>

record title - eadheader/filedesc/titlestmt/titleproper

unittitle = <eulxml.xmlmap.fields.NodeField>

unit title for the archive - archdesc[@level=”collection”]/did/unittitle

Archival Description

LOC documentation for EAD archdesc element

class eulxml.xmlmap.eadmap.ArchivalDescription(node[, context])

Archival description, contains the bulk of the information in an EAD document.

Expected node element passed to constructor: ead/archdesc.

access_restriction = <eulxml.xmlmap.fields.NodeField>

access restrictions Section - accessrestrict

acquisition_info = <eulxml.xmlmap.fields.NodeField>

acquistion info Section - acqinfo

alternate_form = <eulxml.xmlmap.fields.NodeField>

alternative form available Section - altformavail

arrangement = <eulxml.xmlmap.fields.NodeField>

arrangement Section - arrangement

bibliography = <eulxml.xmlmap.fields.NodeField>

bibliography Section - bibliograhy

biography_history = <eulxml.xmlmap.fields.NodeField>

biography or history Section - bioghist

controlaccess = <eulxml.xmlmap.fields.NodeField>

ControlledAccessHeadings - controlaccess; subject terms, names, etc.

custodial_history = <eulxml.xmlmap.fields.NodeField>

custodial history Section - custodhist

dao_list = <eulxml.xmlmap.fields.NodeListField>

list of digital archival object references as DigitalArchivalObject

did = <eulxml.xmlmap.fields.NodeField>

descriptive identification DescriptiveIdentification - did

extent = <eulxml.xmlmap.fields.StringListField>

extent from the physical description - did/physdesc/extent

index = <eulxml.xmlmap.fields.NodeListField>

list of Index - index; e.g., index of selected correspondents

langmaterial = <eulxml.xmlmap.fields.StringField>

language of the materials - did/langmaterial

location = <eulxml.xmlmap.fields.StringField>

physical location - did/physloc

originals_location = <eulxml.xmlmap.fields.NodeField>

location of originals Section - originalsloc

origination = <eulxml.xmlmap.fields.StringField>

origination - did/origination

other = <eulxml.xmlmap.fields.NodeField>

other finding aid Section - otherfindaid

preferred_citation = <eulxml.xmlmap.fields.NodeField>

preferred citation Section - prefercite

process_info = <eulxml.xmlmap.fields.NodeField>

processing information Section - processinfo

related_material = <eulxml.xmlmap.fields.NodeField>

related material Section - relatedmaterial

scope_content = <eulxml.xmlmap.fields.NodeField>

scope and content Section - scopecontent

separated_material = <eulxml.xmlmap.fields.NodeField>

separated material Section - separatedmaterial

unitid = <eulxml.xmlmap.fields.NodeField>

Unitid - did/unitid

use_restriction = <eulxml.xmlmap.fields.NodeField>

use restrictions Section - userestrict

Subordinate Components

See also LOC documentation for dsc element , c (component) element

class eulxml.xmlmap.eadmap.SubordinateComponents(node[, context])

Description of Subordinate Components (dsc element); container lists and series.

Expected node element passed to constructor: ead/archdesc/dsc.

c = <eulxml.xmlmap.fields.NodeListField>

list of Component - c01; list of c01 elements directly under this section

hasSeries()

Check if this finding aid has series/subseries.

Determined based on level of first component (series) or if first component has subcomponents present.

Return type:boolean

type = <eulxml.xmlmap.fields.StringField>

type of component - @type

class eulxml.xmlmap.eadmap.Component(node[, context])

Generic component cN (c1-c12) element - a subordinate component of the materials

access_restriction = <eulxml.xmlmap.fields.NodeField>

access restrictions Section - accessrestrict

acquisition_info = <eulxml.xmlmap.fields.NodeField>

acquistion info Section - acqinfo

alternate_form = <eulxml.xmlmap.fields.NodeField>

alternative form available Section - altformavail

arrangement = <eulxml.xmlmap.fields.NodeField>

arrangement Section - arrangement

bibliography = <eulxml.xmlmap.fields.NodeField>

bibliography Section - bibliograhy

biography_history = <eulxml.xmlmap.fields.NodeField>

biography or history Section - bioghist

c = <eulxml.xmlmap.fields.NodeListField>

list of Component - recursive mapping to any c-level 2-12; c02|c03|c04|c05|c06|c07|c08|c09|c10|c11|c12

custodial_history = <eulxml.xmlmap.fields.NodeField>

custodial history Section - custodhist

dao_list = <eulxml.xmlmap.fields.NodeListField>

list of digital archival object references as DigitalArchivalObject

did = <eulxml.xmlmap.fields.NodeField>

DescriptiveIdentification - did

hasSubseries()

Check if this component has subseries or not.

Determined based on level of first subcomponent (series or subseries) or if first component has subcomponents present.

rtype:boolean

id = <eulxml.xmlmap.fields.StringField>

component id - @id

level = <eulxml.xmlmap.fields.StringField>

level of the component - @level

originals_location = <eulxml.xmlmap.fields.NodeField>

location of originals Section - originalsloc

other = <eulxml.xmlmap.fields.NodeField>

other finding aid Section - otherfindaid

preferred_citation = <eulxml.xmlmap.fields.NodeField>

preferred citation Section - prefercite

process_info = <eulxml.xmlmap.fields.NodeField>

processing infomration Section - processinfo

related_material = <eulxml.xmlmap.fields.NodeField>

related material Section - relatedmaterial

scope_content = <eulxml.xmlmap.fields.NodeField>

scope and content Section - scopecontent

separated_material = <eulxml.xmlmap.fields.NodeField>

separated material Section - separatedmaterial

use_restriction = <eulxml.xmlmap.fields.NodeField>

use restrictions Section - userestrict

Controlled Access Headings

LOC Documentation for controlaccess element

class eulxml.xmlmap.eadmap.ControlledAccessHeadings(node[, context])

Controlled access headings, such as subject terms, family and corporate names, etc.

Expected node element passed to constructor: contolaccess.

controlaccess = <eulxml.xmlmap.fields.NodeListField>

list of ControlledAccessHeadings - recursive mapping to controlaccess

corporate_name = <eulxml.xmlmap.fields.NodeListField>

corporate name Heading list - corpname

family_name = <eulxml.xmlmap.fields.NodeListField>

family name Heading list - famname

function = <eulxml.xmlmap.fields.NodeListField>

function Heading list - function

genre_form = <eulxml.xmlmap.fields.NodeListField>

genre or form Heading list - genreform

geographic_name = <eulxml.xmlmap.fields.NodeListField>

geographic name Heading list - geogname

occupation = <eulxml.xmlmap.fields.NodeListField>

occupation Heading list - occupation

person_name = <eulxml.xmlmap.fields.NodeListField>

person name Heading list - persname

subject = <eulxml.xmlmap.fields.NodeListField>

subject Heading list - subject

terms = <eulxml.xmlmap.fields.NodeListField>

list of Heading - any allowed control access terms, in whatever order they appear

title = <eulxml.xmlmap.fields.NodeListField>

title Heading list - title

class eulxml.xmlmap.eadmap.Heading(node[, context])

Generic xml object for headings used under controlaccess

source = <eulxml.xmlmap.fields.StringField>

source vocabulary for controlled term - @source

value = <eulxml.xmlmap.fields.StringField>

controlled term text value (content of the heading element)

Index and Index Entry

See also LOC Documentation for index element, indexentry element

class eulxml.xmlmap.eadmap.Index(node[, context])

Index (index element); list of key terms and reference information.

Expected node element passed to constructor: ead/archdesc/index.

entry = <eulxml.xmlmap.fields.NodeListField>

list of IndexEntry - indexentry; entry in the index

note = <eulxml.xmlmap.fields.NodeField>

Note

class eulxml.xmlmap.eadmap.IndexEntry(node[, context])

Index entry in an archival description index.

name = <eulxml.xmlmap.fields.NodeField>

access element, e.g. name or subject

ptrgroup = <eulxml.xmlmap.fields.NodeField>

PointerGroup - group of references for this index entry

File Description

See also LOC Documentation for filedesc element, publicationstmt element

class eulxml.xmlmap.eadmap.FileDescription(node[, context])

Bibliographic information about this EAD document.

Expected node element passed to constructor: ead/eadheader/filedesc.

publication = <eulxml.xmlmap.fields.NodeField>

publication information - publicationstmt

class eulxml.xmlmap.eadmap.PublicationStatement(node[, context])

Publication information for an EAD document.

Expected node element passed to constructor: ead/eadheader/filedesc/publicationstmt.

address = <eulxml.xmlmap.fields.NodeField>

address of publication/publisher - address

date = <eulxml.xmlmap.fields.NodeField>

DateField - date

publisher = <eulxml.xmlmap.fields.StringField>

publisher - publisher

Miscellaneous

See also LOC documentation for did element , container element

class eulxml.xmlmap.eadmap.DescriptiveIdentification(node[, context])

Descriptive Information (did element) for materials in a component

abstract = <eulxml.xmlmap.fields.NodeField>

abstract - abstract

container = <eulxml.xmlmap.fields.NodeListField>

Container - container

dao_list = <eulxml.xmlmap.fields.NodeListField>

list of digital archival object references as DigitalArchivalObject

langmaterial = <eulxml.xmlmap.fields.StringField>

language of materials - langmaterial

location = <eulxml.xmlmap.fields.StringField>

physical location - physloc

origination = <eulxml.xmlmap.fields.StringField>

origination - origination

physdesc = <eulxml.xmlmap.fields.StringField>

physical description - physdesc

unitdate = <eulxml.xmlmap.fields.NodeField>

unit date - .//unitdate can be anywhere under the DescriptiveIdentification

unitid = <eulxml.xmlmap.fields.NodeField>

Unitid - unitid

unittitle = <eulxml.xmlmap.fields.NodeField>

unit title - unittitle

class eulxml.xmlmap.eadmap.Container(node[, context])

Container - DescriptiveIdentification subelement for locating materials.

Expected node element passed to constructor: did/container.

type = <eulxml.xmlmap.fields.StringField>

type - @type

value = <eulxml.xmlmap.fields.StringField>

text value - (contents of the container element)

class eulxml.xmlmap.eadmap.Section(node[, context])

Generic EAD section. Currently only has mappings for head, paragraph, and note.

content = <eulxml.xmlmap.fields.NodeListField>

list of paragraphs - p

head = <eulxml.xmlmap.fields.NodeField>

heading - head

note = <eulxml.xmlmap.fields.NodeField>

Note

class eulxml.xmlmap.eadmap.Address(node[, context])

Address information.

Expected node element passed to constructor: address.

lines = <eulxml.xmlmap.fields.StringListField>

list of lines in an address - line

class eulxml.xmlmap.eadmap.PointerGroup(node[, context])

Group of pointer or reference elements in an index entry

Expected node element passed to constructor: ptrgrp.

ref = <eulxml.xmlmap.fields.NodeListField>

list of Reference - references

class eulxml.xmlmap.eadmap.Reference(node[, context])

Internal linking element that may contain text.

Expected node element passed to constructor: ref.

target = <eulxml.xmlmap.fields.StringField>

link target

type = <eulxml.xmlmap.fields.StringField>

link type - xlink:type

value = <eulxml.xmlmap.fields.NodeField>

text content of the reference

class eulxml.xmlmap.eadmap.ProfileDescription(dom_node[, context])

Profile Descriptor for an EAD document. Expected node element passed to constructor: ‘ead/eadheader/profiledesc’.

date = <eulxml.xmlmap.fields.NodeField>

DateField - creation/date

language_codes = <eulxml.xmlmap.fields.StringListField>

language codes - langusage/language/@langcode

languages = <eulxml.xmlmap.fields.StringListField>

language information - langusage/language

class eulxml.xmlmap.eadmap.DigitalArchivalObject(dom_node[, context])

Digital Archival Object (dao element)

audience = <eulxml.xmlmap.fields.StringField>

audience (internal or external)

href = <eulxml.xmlmap.fields.StringField>

url where the digital archival object can be accessed

id = <eulxml.xmlmap.fields.StringField>

identifier

show = <eulxml.xmlmap.fields.StringField>

attribute to determine how the resource should be displayed

title = <eulxml.xmlmap.fields.StringField>

title

eulxml.xmlmap.dc - Dublin Core

General Information

Thorough documentation of Dublin Core and all the elements included in simple, unqaulified DC is available from the Dublin Core Metadata Initiative. In particular, see Dublin Core Metadata Element Set, Version 1.1.

Dublin Core

All elements in Dublin Core are optional and can be repeated, so each field has been mapped as a single element (eulxml.xmlmap.StringField) and as a list (eulxml.xmlmap.StringListField), named according to the DC element.

Because the DC elements are thoroughly and clearly documented at http://dublincore.org, element descriptions have not been repeated here.

class eulxml.xmlmap.dc.DublinCore([node[, context]])

XmlObject for Simple (unqualified) Dublin Core metadata.

If no node is specified when initialized, a new, empty Dublin Core XmlObject will be created.

DCMI_TYPES_RDF = u'http://dublincore.org/2010/10/11/dctype.rdf'

DCMI_TYPE_URI = rdflib.term.URIRef(u'http://purl.org/dc/dcmitype/')

ROOT_NAME = u'dc'

XSD_SCHEMA = u'http://www.openarchives.org/OAI/2.0/oai_dc.xsd'

contributor = <eulxml.xmlmap.fields.StringField>

contributor_list = <eulxml.xmlmap.fields.StringListField>

coverage = <eulxml.xmlmap.fields.StringField>

coverage_list = <eulxml.xmlmap.fields.StringListField>

creator = <eulxml.xmlmap.fields.StringField>

creator_list = <eulxml.xmlmap.fields.StringListField>

date = <eulxml.xmlmap.fields.StringField>

date_list = <eulxml.xmlmap.fields.StringListField>

dcmi_types

DCMI Type Vocabulary (recommended), as documented at http://dublincore.org/documents/dcmi-type-vocabulary/

dcmi_types_graph

DCMI Types Vocabulary as an rdflib.Graph

description = <eulxml.xmlmap.fields.StringField>

description_list = <eulxml.xmlmap.fields.StringListField>

elements = <eulxml.xmlmap.fields.NodeListField>

list of all DC elements as instances of DublinCoreElement

format = <eulxml.xmlmap.fields.StringField>

format_list = <eulxml.xmlmap.fields.StringListField>

identifier = <eulxml.xmlmap.fields.StringField>

identifier_list = <eulxml.xmlmap.fields.StringListField>

language = <eulxml.xmlmap.fields.StringField>

language_list = <eulxml.xmlmap.fields.StringListField>

publisher = <eulxml.xmlmap.fields.StringField>

publisher_list = <eulxml.xmlmap.fields.StringListField>

relation = <eulxml.xmlmap.fields.StringField>

relation_list = <eulxml.xmlmap.fields.StringListField>

rights = <eulxml.xmlmap.fields.StringField>

rights_list = <eulxml.xmlmap.fields.StringListField>

source = <eulxml.xmlmap.fields.StringField>

source_list = <eulxml.xmlmap.fields.StringListField>

subject = <eulxml.xmlmap.fields.StringField>

subject_list = <eulxml.xmlmap.fields.StringListField>

title = <eulxml.xmlmap.fields.StringField>

title_list = <eulxml.xmlmap.fields.StringListField>

type = <eulxml.xmlmap.fields.StringField>

type_list = <eulxml.xmlmap.fields.StringListField>

eulxml.xmlmap.cerp - Collaborative Electronic Records Project

General Information

The Collaborative Celectronic Records Project, or CERP is a digital preservation project from the Smithsonian Institution Archives and the Rockefeller Archive Center. One particular product of that project was an XML format for email accounts. This module maps those XML objects to Python objects.

The schema produced by the project will validate only Account objects, though this module also allows the creation of subelements.

Account and Associated Objects

class eulxml.xmlmap.cerp.Account(node=None, context=None, **kwargs)

A single email account associated with a single email address and composed of multiple Folder objects and additional metadata.

http://www.records.ncdcr.gov/emailpreservation/mail-account/mail-account_docs.html#element_Account

ROOT_NAME = u'Account'

ROOT_NAMESPACES = {u'xm': u'http://www.archives.ncdcr.gov/mail-account'}

ROOT_NS = u'http://www.archives.ncdcr.gov/mail-account'

XSD_SCHEMA = u'http://www.archives.ncdcr.gov/mail-account.xsd'

email_address = <eulxml.xmlmap.fields.StringField>

folders = <eulxml.xmlmap.fields.NodeListField>

global_id = <eulxml.xmlmap.fields.StringField>

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

node = None

references_accounts = <eulxml.xmlmap.fields.NodeListField>

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

class eulxml.xmlmap.cerp.ReferencesAccount(node=None, context=None, **kwargs)

http://www.records.ncdcr.gov/emailpreservation/mail-account/mail-account_docs.html#type_ref-account-type

REF_TYPE_CHOICES = [u'PreviousContent', u'SubsequentContent', u'Supplemental', u'SeeAlso', u'SeeInstead']

ROOT_NAME = u'ReferencesAccount'

ROOT_NAMESPACES = {u'xm': u'http://www.archives.ncdcr.gov/mail-account'}

ROOT_NS = u'http://www.archives.ncdcr.gov/mail-account'

XSD_SCHEMA = None

email_address = <eulxml.xmlmap.fields.StringField>

href = <eulxml.xmlmap.fields.StringField>

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

node = None

reference_type = <eulxml.xmlmap.fields.StringField>

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

Folder and Associated Objects

class eulxml.xmlmap.cerp.Folder(node=None, context=None, **kwargs)

A single email folder in an Account, composed of multiple Message objects and associated metadata.

http://www.records.ncdcr.gov/emailpreservation/mail-account/mail-account_docs.html#type_folder-type

ROOT_NAME = u'Folder'

ROOT_NAMESPACES = {u'xm': u'http://www.archives.ncdcr.gov/mail-account'}

ROOT_NS = u'http://www.archives.ncdcr.gov/mail-account'

XSD_SCHEMA = None

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

mboxes = <eulxml.xmlmap.fields.NodeListField>

messages = <eulxml.xmlmap.fields.NodeListField>

name = <eulxml.xmlmap.fields.StringField>

node = None

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

subfolders = <eulxml.xmlmap.fields.NodeListField>

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

class eulxml.xmlmap.cerp.Mbox(node=None, context=None, **kwargs)

http://www.records.ncdcr.gov/emailpreservation/mail-account/mail-account_docs.html#type_mbox-type

EOL_CHOICES = [u'CR', u'LF', u'CRLF']

ROOT_NAME = u'Mbox'

ROOT_NAMESPACES = {u'xm': u'http://www.archives.ncdcr.gov/mail-account'}

ROOT_NS = u'http://www.archives.ncdcr.gov/mail-account'

XSD_SCHEMA = None

create_hash(xmlobject)

eol = <eulxml.xmlmap.fields.StringField>

hash = <eulxml.xmlmap.fields.NodeField>

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

node = None

rel_path = <eulxml.xmlmap.fields.StringField>

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

Message and Associated Objects

class eulxml.xmlmap.cerp.Message(node=None, context=None, **kwargs)

A single email message in a Folder.

http://www.records.ncdcr.gov/emailpreservation/mail-account/mail-account_docs.html#type_message-type

EOL_CHOICES = [u'CR', u'LF', u'CRLF']

ROOT_NAME = u'Message'

ROOT_NAMESPACES = {u'xm': u'http://www.archives.ncdcr.gov/mail-account'}

ROOT_NS = u'http://www.archives.ncdcr.gov/mail-account'

STATUS_FLAG_CHOICES = [u'Seen', u'Answered', u'Flagged', u'Deleted', u'Draft', u'Recent']

XSD_SCHEMA = None

bcc_list = <eulxml.xmlmap.fields.StringListField>

body

cc_list = <eulxml.xmlmap.fields.StringListField>

comments_list = <eulxml.xmlmap.fields.StringListField>

create_hash(xmlobject)

create_incomplete_list(xmlobject)

create_multi_body(xmlobject)

create_single_body(xmlobject)

eol = <eulxml.xmlmap.fields.StringField>

classmethod from_email_message(message, local_id=None)

Convert an email.message.Message or compatible message object into a CERP XML eulxml.xmlmap.cerp.Message. If an id is specified, it will be stored in the Message <LocalId>.

Parameters:

• message – email.message.Message object
• id – optional message id to be set as local_id

Returns:

eulxml.xmlmap.cerp.Message instance populated with message information

from_list = <eulxml.xmlmap.fields.StringListField>

hash = <eulxml.xmlmap.fields.NodeField>

headers = <eulxml.xmlmap.fields.NodeListField>

in_reply_to_list = <eulxml.xmlmap.fields.StringListField>

incomplete_list = <eulxml.xmlmap.fields.NodeField>

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

keywords_list = <eulxml.xmlmap.fields.StringListField>

local_id = <eulxml.xmlmap.fields.IntegerField>

message_id = <eulxml.xmlmap.fields.StringField>

message_id_supplied = <eulxml.xmlmap.fields.SimpleBooleanField>

mime_version = <eulxml.xmlmap.fields.StringField>

multi_body = <eulxml.xmlmap.fields.NodeField>

node = None

orig_date_list = <eulxml.xmlmap.fields.StringListField>

references_list = <eulxml.xmlmap.fields.StringListField>

rel_path = <eulxml.xmlmap.fields.StringField>

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

sender_list = <eulxml.xmlmap.fields.StringListField>

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

single_body = <eulxml.xmlmap.fields.NodeField>

status_flags = <eulxml.xmlmap.fields.StringListField>

subject_list = <eulxml.xmlmap.fields.StringListField>

to_list = <eulxml.xmlmap.fields.StringListField>

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

class eulxml.xmlmap.cerp.ChildMessage(node=None, context=None, **kwargs)

http://www.records.ncdcr.gov/emailpreservation/mail-account/mail-account_docs.html#type_child-message-type

ROOT_NAME = u'ChildMessage'

ROOT_NAMESPACES = {u'xm': u'http://www.archives.ncdcr.gov/mail-account'}

ROOT_NS = u'http://www.archives.ncdcr.gov/mail-account'

XSD_SCHEMA = None

bcc_list = <eulxml.xmlmap.fields.StringListField>

body

cc_list = <eulxml.xmlmap.fields.StringListField>

comments_list = <eulxml.xmlmap.fields.StringListField>

create_incomplete_list(xmlobject)

create_multi_body(xmlobject)

create_single_body(xmlobject)

from_list = <eulxml.xmlmap.fields.StringListField>

headers = <eulxml.xmlmap.fields.NodeListField>

in_reply_to_list = <eulxml.xmlmap.fields.StringListField>

incomplete_list = <eulxml.xmlmap.fields.NodeField>

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

keywords_list = <eulxml.xmlmap.fields.StringListField>

local_id = <eulxml.xmlmap.fields.IntegerField>

message_id = <eulxml.xmlmap.fields.StringField>

message_id_supplied = <eulxml.xmlmap.fields.SimpleBooleanField>

mime_version = <eulxml.xmlmap.fields.StringField>

multi_body = <eulxml.xmlmap.fields.NodeField>

node = None

orig_date_list = <eulxml.xmlmap.fields.StringListField>

references_list = <eulxml.xmlmap.fields.StringListField>

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

sender_list = <eulxml.xmlmap.fields.StringListField>

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

single_body = <eulxml.xmlmap.fields.NodeField>

subject_list = <eulxml.xmlmap.fields.StringListField>

to_list = <eulxml.xmlmap.fields.StringListField>

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

class eulxml.xmlmap.cerp.SingleBody(node=None, context=None, **kwargs)

http://www.records.ncdcr.gov/emailpreservation/mail-account/mail-account_docs.html#type_single-body-type

ROOT_NAME = u'SingleBody'

ROOT_NAMESPACES = {u'xm': u'http://www.archives.ncdcr.gov/mail-account'}

ROOT_NS = u'http://www.archives.ncdcr.gov/mail-account'

XSD_SCHEMA = None

body_content = <eulxml.xmlmap.fields.NodeField>

charset_list = <eulxml.xmlmap.fields.StringListField>

child_message = <eulxml.xmlmap.fields.NodeField>

content

content_id_comments_list = <eulxml.xmlmap.fields.StringListField>

content_id_list = <eulxml.xmlmap.fields.StringListField>

content_name_list = <eulxml.xmlmap.fields.StringListField>

content_type_comments_list = <eulxml.xmlmap.fields.StringListField>

content_type_list = <eulxml.xmlmap.fields.StringListField>

content_type_param_list = <eulxml.xmlmap.fields.NodeListField>

create_body_content(xmlobject)

create_child_message(xmlobject)

create_ext_body_content(xmlobject)

description_comments_list = <eulxml.xmlmap.fields.StringListField>

description_list = <eulxml.xmlmap.fields.StringListField>

disposition_comments_list = <eulxml.xmlmap.fields.StringListField>

disposition_file_name_list = <eulxml.xmlmap.fields.StringListField>

disposition_list = <eulxml.xmlmap.fields.StringListField>

disposition_params = <eulxml.xmlmap.fields.NodeListField>

ext_body_content = <eulxml.xmlmap.fields.NodeField>

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

node = None

other_mime_headers = <eulxml.xmlmap.fields.NodeListField>

phantom_body = <eulxml.xmlmap.fields.StringField>

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

transfer_encoding_comments_list = <eulxml.xmlmap.fields.StringListField>

transfer_encoding_list = <eulxml.xmlmap.fields.StringListField>

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

class eulxml.xmlmap.cerp.MultiBody(node=None, context=None, **kwargs)

http://www.records.ncdcr.gov/emailpreservation/mail-account/mail-account_docs.html#type_multi-body-type

ROOT_NAME = u'MultiBody'

ROOT_NAMESPACES = {u'xm': u'http://www.archives.ncdcr.gov/mail-account'}

ROOT_NS = u'http://www.archives.ncdcr.gov/mail-account'

XSD_SCHEMA = None

body

create_multi_body(xmlobject)

create_single_body(xmlobject)

epilogue = <eulxml.xmlmap.fields.StringField>

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

multi_body = <eulxml.xmlmap.fields.NodeField>

node = None

preamble = <eulxml.xmlmap.fields.StringField>

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

single_body = <eulxml.xmlmap.fields.NodeField>

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

class eulxml.xmlmap.cerp.Incomplete(node=None, context=None, **kwargs)

http://www.records.ncdcr.gov/emailpreservation/mail-account/mail-account_docs.html#type_incomplete-parse-type

ROOT_NAME = u'Incomplete'

ROOT_NAMESPACES = {u'xm': u'http://www.archives.ncdcr.gov/mail-account'}

ROOT_NS = u'http://www.archives.ncdcr.gov/mail-account'

XSD_SCHEMA = None

error_location = <eulxml.xmlmap.fields.StringField>

error_type = <eulxml.xmlmap.fields.StringField>

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

node = None

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

class eulxml.xmlmap.cerp.BodyContent(node=None, context=None, **kwargs)

http://www.records.ncdcr.gov/emailpreservation/mail-account/mail-account_docs.html#type_int-body-content-type

ROOT_NAME = u'BodyContent'

ROOT_NAMESPACES = {u'xm': u'http://www.archives.ncdcr.gov/mail-account'}

ROOT_NS = u'http://www.archives.ncdcr.gov/mail-account'

XSD_SCHEMA = None

charset_list = <eulxml.xmlmap.fields.StringListField>

content = <eulxml.xmlmap.fields.StringField>

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

node = None

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

transfer_encoding_list = <eulxml.xmlmap.fields.StringListField>

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

class eulxml.xmlmap.cerp.ExtBodyContent(node=None, context=None, **kwargs)

http://www.records.ncdcr.gov/emailpreservation/mail-account/mail-account_docs.html#type_ext-body-content-type

EOL_CHOICES = [u'CR', u'LF', u'CRLF']

ROOT_NAME = u'ExtBodyContent'

ROOT_NAMESPACES = {u'xm': u'http://www.archives.ncdcr.gov/mail-account'}

ROOT_NS = u'http://www.archives.ncdcr.gov/mail-account'

XSD_SCHEMA = None

charset_list = <eulxml.xmlmap.fields.StringListField>

create_hash(xmlobject)

eol = <eulxml.xmlmap.fields.StringField>

hash = <eulxml.xmlmap.fields.NodeField>

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

local_id = <eulxml.xmlmap.fields.IntegerField>

node = None

rel_path = <eulxml.xmlmap.fields.StringField>

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

transfer_encoding_list = <eulxml.xmlmap.fields.StringListField>

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

xml_wrapped = <eulxml.xmlmap.fields.SimpleBooleanField>

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

Additional Utility Objects

class eulxml.xmlmap.cerp.Parameter(node=None, context=None, **kwargs)

http://www.records.ncdcr.gov/emailpreservation/mail-account/mail-account_docs.html#type_parameter-type

ROOT_NAME = u'Parameter'

ROOT_NAMESPACES = {u'xm': u'http://www.archives.ncdcr.gov/mail-account'}

ROOT_NS = u'http://www.archives.ncdcr.gov/mail-account'

XSD_SCHEMA = None

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

name = <eulxml.xmlmap.fields.StringField>

node = None

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

value = <eulxml.xmlmap.fields.StringField>

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

class eulxml.xmlmap.cerp.Header(node=None, context=None, **kwargs)

http://www.records.ncdcr.gov/emailpreservation/mail-account/mail-account_docs.html#type_header-type

ROOT_NAME = u'Header'

ROOT_NAMESPACES = {u'xm': u'http://www.archives.ncdcr.gov/mail-account'}

ROOT_NS = u'http://www.archives.ncdcr.gov/mail-account'

XSD_SCHEMA = None

comments = <eulxml.xmlmap.fields.StringListField>

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

name = <eulxml.xmlmap.fields.StringField>

node = None

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

value = <eulxml.xmlmap.fields.StringField>

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

class eulxml.xmlmap.cerp.Hash(node=None, context=None, **kwargs)

http://www.records.ncdcr.gov/emailpreservation/mail-account/mail-account_docs.html#type_hash-type

HASH_FUNCTION_CHOICES = [u'MD5', u'WHIRLPOOL', u'SHA1', u'SHA224', u'SHA256', u'SHA384', u'SHA512', u'RIPEMD160']

ROOT_NAME = u'Hash'

ROOT_NAMESPACES = {u'xm': u'http://www.archives.ncdcr.gov/mail-account'}

ROOT_NS = u'http://www.archives.ncdcr.gov/mail-account'

XSD_SCHEMA = None

function = <eulxml.xmlmap.fields.StringField>

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

node = None

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

value = <eulxml.xmlmap.fields.StringField>

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

eulxml.xmlmap.mods - Metadata Object Description Schema (MODS)

General Information

The Metadata Object Description Standard, or MODS is a schema developed and maintained by the Library of Congress for bibliographic records.

This module defines classes to handle common use cases for MODS metadata, rooted in the MODSv34 object. It is not a complete mapping, though it will likely grow closer to one as development progresses according to user needs.

Root Classes: MODS and Friends

class eulxml.xmlmap.mods.MODS(node=None, context=None, **kwargs)

Top-level XmlObject for a MODS metadata record. Inherits all standard top-level MODS fields from BaseMods and adds a mapping for RelatedItem.

ROOT_NAME = u'mods'

ROOT_NAMESPACES = {u'mods': u'http://www.loc.gov/mods/v3'}

ROOT_NS = u'http://www.loc.gov/mods/v3'

XSD_SCHEMA = u'http://www.loc.gov/standards/mods/v3/mods-3-4.xsd'

abstract = <eulxml.xmlmap.fields.NodeField>

access_conditions = <eulxml.xmlmap.fields.NodeListField>

create_abstract(xmlobject)

create_name(xmlobject)

create_note(xmlobject)

create_origin_info(xmlobject)

create_physical_description(xmlobject)

create_record_info(xmlobject)

create_title_info(xmlobject)

genres = <eulxml.xmlmap.fields.NodeListField>

id = <eulxml.xmlmap.fields.StringField>

identifiers = <eulxml.xmlmap.fields.NodeListField>

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

languages = <eulxml.xmlmap.fields.NodeListField>

location = <eulxml.xmlmap.fields.StringField>

locations = <eulxml.xmlmap.fields.NodeListField>

name = <eulxml.xmlmap.fields.NodeField>

names = <eulxml.xmlmap.fields.NodeListField>

node = None

note = <eulxml.xmlmap.fields.NodeField>

notes = <eulxml.xmlmap.fields.NodeListField>

origin_info = <eulxml.xmlmap.fields.NodeField>

parts = <eulxml.xmlmap.fields.NodeListField>

physical_description = <eulxml.xmlmap.fields.NodeField>

record_info = <eulxml.xmlmap.fields.NodeField>

related_items = <eulxml.xmlmap.fields.NodeListField>

resource_type = <eulxml.xmlmap.fields.StringField>

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

subjects = <eulxml.xmlmap.fields.NodeListField>

title = <eulxml.xmlmap.fields.StringField>

title_info = <eulxml.xmlmap.fields.NodeField>

title_info_list = <eulxml.xmlmap.fields.NodeListField>

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

class eulxml.xmlmap.mods.MODSv34(node=None, context=None, **kwargs)

XmlObject for MODS version 3.4. Currently consists of all the same fields as MODS, but loads the MODS version 3.4 schema for validation.

ROOT_NAME = u'mods'

ROOT_NAMESPACES = {u'mods': u'http://www.loc.gov/mods/v3'}

ROOT_NS = u'http://www.loc.gov/mods/v3'

XSD_SCHEMA = u'http://www.loc.gov/standards/mods/v3/mods-3-4.xsd'

abstract = <eulxml.xmlmap.fields.NodeField>

access_conditions = <eulxml.xmlmap.fields.NodeListField>

create_abstract(xmlobject)

create_name(xmlobject)

create_note(xmlobject)

create_origin_info(xmlobject)

create_physical_description(xmlobject)

create_record_info(xmlobject)

create_title_info(xmlobject)

genres = <eulxml.xmlmap.fields.NodeListField>

id = <eulxml.xmlmap.fields.StringField>

identifiers = <eulxml.xmlmap.fields.NodeListField>

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

languages = <eulxml.xmlmap.fields.NodeListField>

location = <eulxml.xmlmap.fields.StringField>

locations = <eulxml.xmlmap.fields.NodeListField>

name = <eulxml.xmlmap.fields.NodeField>

names = <eulxml.xmlmap.fields.NodeListField>

node = None

note = <eulxml.xmlmap.fields.NodeField>

notes = <eulxml.xmlmap.fields.NodeListField>

origin_info = <eulxml.xmlmap.fields.NodeField>

parts = <eulxml.xmlmap.fields.NodeListField>

physical_description = <eulxml.xmlmap.fields.NodeField>

record_info = <eulxml.xmlmap.fields.NodeField>

related_items = <eulxml.xmlmap.fields.NodeListField>

resource_type = <eulxml.xmlmap.fields.StringField>

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

subjects = <eulxml.xmlmap.fields.NodeListField>

title = <eulxml.xmlmap.fields.StringField>

title_info = <eulxml.xmlmap.fields.NodeField>

title_info_list = <eulxml.xmlmap.fields.NodeListField>

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

Title Info

MODS titleInfo

class eulxml.xmlmap.mods.TitleInfo(node=None, context=None, **kwargs)

ROOT_NAME = u'titleInfo'

is_empty()

Returns True if all titleInfo subfields are not set or empty; returns False if any of the fields are not empty.

label = <eulxml.xmlmap.fields.StringField>

non_sort = <eulxml.xmlmap.fields.StringField>

part_name = <eulxml.xmlmap.fields.StringField>

part_number = <eulxml.xmlmap.fields.StringField>

subtitle = <eulxml.xmlmap.fields.StringField>

title = <eulxml.xmlmap.fields.StringField>

type = <eulxml.xmlmap.fields.StringField>

Name

MODS name

class eulxml.xmlmap.mods.Name(node=None, context=None, **kwargs)

XmlObject for MODS name

ROOT_NAME = u'name'

affiliation = <eulxml.xmlmap.fields.StringField>

authority = <eulxml.xmlmap.fields.StringField>

display_form = <eulxml.xmlmap.fields.StringField>

id = <eulxml.xmlmap.fields.StringField>

name_parts = <eulxml.xmlmap.fields.NodeListField>

roles = <eulxml.xmlmap.fields.NodeListField>

type = <eulxml.xmlmap.fields.StringField>

class eulxml.xmlmap.mods.NamePart(node=None, context=None, **kwargs)

XmlObject for MODS namePart

ROOT_NAME = u'namePart'

text = <eulxml.xmlmap.fields.StringField>

type = <eulxml.xmlmap.fields.StringField>

class eulxml.xmlmap.mods.Role(node=None, context=None, **kwargs)

XmlObject for MODS role

ROOT_NAME = u'role'

authority = <eulxml.xmlmap.fields.StringField>

text = <eulxml.xmlmap.fields.StringField>

type = <eulxml.xmlmap.fields.StringField>

Genre

MODS genre

class eulxml.xmlmap.mods.Genre(node=None, context=None, **kwargs)

ROOT_NAME = u'genre'

authority = <eulxml.xmlmap.fields.StringField>

text = <eulxml.xmlmap.fields.StringField>

Origin Info

MODS originInfo

class eulxml.xmlmap.mods.OriginInfo(node=None, context=None, **kwargs)

XmlObject for MODS originInfo element (incomplete)

ROOT_NAME = u'originInfo'

captured = <eulxml.xmlmap.fields.NodeListField>

copyright = <eulxml.xmlmap.fields.NodeListField>

created = <eulxml.xmlmap.fields.NodeListField>

is_empty()

Returns True if all child date elements present are empty and other nodes are not set. Returns False if any child date elements are not empty or other nodes are set.

issued = <eulxml.xmlmap.fields.NodeListField>

modified = <eulxml.xmlmap.fields.NodeListField>

other = <eulxml.xmlmap.fields.NodeListField>

publisher = <eulxml.xmlmap.fields.StringField>

valid = <eulxml.xmlmap.fields.NodeListField>

class eulxml.xmlmap.mods.DateCreated(node=None, context=None, **kwargs)

ROOT_NAME = u'dateCreated'

class eulxml.xmlmap.mods.DateIssued(node=None, context=None, **kwargs)

ROOT_NAME = u'dateIssued'

Language

MODS language

class eulxml.xmlmap.mods.Language(node=None, context=None, **kwargs)

ROOT_NAME = u'language'

terms = <eulxml.xmlmap.fields.NodeListField>

class eulxml.xmlmap.mods.LanguageTerm(node=None, context=None, **kwargs)

ROOT_NAME = u'languageTerm'

authority = <eulxml.xmlmap.fields.StringField>

text = <eulxml.xmlmap.fields.StringField>

type = <eulxml.xmlmap.fields.StringField>

Physical Description

MODS physicalDescription

class eulxml.xmlmap.mods.PhysicalDescription(node=None, context=None, **kwargs)

ROOT_NAME = u'physicalDescription'

extent = <eulxml.xmlmap.fields.StringField>

media_type = <eulxml.xmlmap.fields.StringField>

Abstract

MODS abstract

class eulxml.xmlmap.mods.Abstract(node=None, context=None, **kwargs)

ROOT_NAME = u'abstract'

label = <eulxml.xmlmap.fields.StringField>

text = <eulxml.xmlmap.fields.StringField>

type = <eulxml.xmlmap.fields.StringField>

Note

MODS note

class eulxml.xmlmap.mods.Note(node=None, context=None, **kwargs)

XmlObject for MODS note element

ROOT_NAME = u'note'

label = <eulxml.xmlmap.fields.StringField>

text = <eulxml.xmlmap.fields.StringField>

type = <eulxml.xmlmap.fields.StringField>

class eulxml.xmlmap.mods.TypedNote(node=None, context=None, **kwargs)

Extends Note to modify is_empty() behavior– considered empty when a type attribute is set without any text.

Subject

MODS subject

class eulxml.xmlmap.mods.Subject(node=None, context=None, **kwargs)

ROOT_NAME = u'subject'

authority = <eulxml.xmlmap.fields.StringField>

create_name(xmlobject)

geographic = <eulxml.xmlmap.fields.StringField>

id = <eulxml.xmlmap.fields.StringField>

name = <eulxml.xmlmap.fields.NodeField>

title = <eulxml.xmlmap.fields.StringField>

topic = <eulxml.xmlmap.fields.StringField>

Related Item

MODS relatedItem

class eulxml.xmlmap.mods.RelatedItem(node=None, context=None, **kwargs)

XmlObject for MODS relatedItem: contains all the top-level MODS fields defined by BaseMods, plus a type attribute.

ROOT_NAME = u'relatedItem'

label = <eulxml.xmlmap.fields.StringField>

type = <eulxml.xmlmap.fields.StringField>

Identifer

MODS identifier

class eulxml.xmlmap.mods.Identifier(node=None, context=None, **kwargs)

XmlObject for MODS identifier

ROOT_NAME = u'identifier'

label = <eulxml.xmlmap.fields.StringField>

text = <eulxml.xmlmap.fields.StringField>

type = <eulxml.xmlmap.fields.StringField>

Location

MODS location

class eulxml.xmlmap.mods.Location(node=None, context=None, **kwargs)

ROOT_NAME = u'location'

physical = <eulxml.xmlmap.fields.StringField>

url = <eulxml.xmlmap.fields.StringField>

Access Condition

MODS accessCondition

class eulxml.xmlmap.mods.AccessCondition(node=None, context=None, **kwargs)

XmlObject for MODS accessCondition

ROOT_NAME = u'accessCondition'

text = <eulxml.xmlmap.fields.StringField>

type = <eulxml.xmlmap.fields.StringField>

Part

MODS part

class eulxml.xmlmap.mods.Part(node=None, context=None, **kwargs)

ROOT_NAME = u'part'

create_extent(xmlobject)

details = <eulxml.xmlmap.fields.NodeListField>

extent = <eulxml.xmlmap.fields.NodeField>

is_empty()

Returns True if details, extent, and type are not set or return True for is_empty; returns False if any of the fields are not empty.

type = <eulxml.xmlmap.fields.StringField>

class eulxml.xmlmap.mods.PartDetail(node=None, context=None, **kwargs)

ROOT_NAME = u'detail'

is_empty()

Returns False if no number value is set; returns True if any number value is set. Type attribute is ignored for determining whether or not this node should be considered empty.

number = <eulxml.xmlmap.fields.StringField>

type = <eulxml.xmlmap.fields.StringField>

class eulxml.xmlmap.mods.PartExtent(node=None, context=None, **kwargs)

ROOT_NAME = u'extent'

end = <eulxml.xmlmap.fields.StringField>

is_empty()

Returns False if no extent value is set; returns True if any extent value is set. Unit attribute is ignored for determining whether or not this node should be considered empty.

start = <eulxml.xmlmap.fields.StringField>

total = <eulxml.xmlmap.fields.StringField>

unit = <eulxml.xmlmap.fields.StringField>

Record Info

MODS recordInfo

class eulxml.xmlmap.mods.RecordInfo(node=None, context=None, **kwargs)

ROOT_NAME = u'recordInfo'

change_date = <eulxml.xmlmap.fields.StringField>

creation_date = <eulxml.xmlmap.fields.StringField>

record_id = <eulxml.xmlmap.fields.StringField>

record_origin = <eulxml.xmlmap.fields.StringField>

eulxml.xmlmap.premis - PREMIS

eulxml.xmlmap classes for dealing with the PREMIS metadata format for preservation metadata.

---

class eulxml.xmlmap.premis.BasePremis(node=None, context=None, **kwargs)

Base PREMIS class with namespace declaration common to all PREMIS XmlObjects.

Note

This class is intended mostly for internal use, but could be useful when extending or adding additional PREMIS XmlObject classes. The PREMIS_NAMESPACE is mapped to the prefix p.

class eulxml.xmlmap.premis.Event(node=None, context=None, **kwargs)

Preliminary XmlObject for a PREMIS event.

Note

The PREMIS schema requires that elements occur in a specified order, which eulxml does not currently handle or manage. As a work-around, when creating a new Event from scratch, you should set the following required fields in this order: identifier (id and ad_type

date = <eulxml.xmlmap.fields.StringField>

date/time for the event (eventDateTime)

detail = <eulxml.xmlmap.fields.StringField>

event detail (eventDetail)

id = <eulxml.xmlmap.fields.StringField>

identifier value (eventIdentifier/eventIdentifierValue)

id_type = <eulxml.xmlmap.fields.StringField>

identifier type (eventIdentifier/eventIdentifierType)

outcome = <eulxml.xmlmap.fields.StringField>

outcome of the event (eventOutcomeInformation/eventOutcome).

Note

In this preliminary implementation, the outcome detail fields are not mapped.

type = <eulxml.xmlmap.fields.StringField>

event type (eventType)

class eulxml.xmlmap.premis.Object(node=None, context=None, **kwargs)

Preliminary XmlObject for a PREMIS object.

Curently only includes the minimal required fields.

id = <eulxml.xmlmap.fields.StringField>

identifier value (objectIdentifier/objectIdentifierValue)

id_type = <eulxml.xmlmap.fields.StringField>

identifier type (objectIdentifier/objectIdentifierType)

type = <eulxml.xmlmap.fields.StringField>

type of object (e.g., file, representation, bitstream).

Note

To be schema valid, object types must be in the PREMIS namespace, e.g.:

from eulxml.xmlmap import premis
obj = premis.Object()
obj.type = "p:file"

eulxml.xmlmap.premis.PREMIS_NAMESPACE = u'info:lc/xmlns/premis-v2'

authoritative namespace for PREMIS

eulxml.xmlmap.premis.PREMIS_SCHEMA = u'http://www.loc.gov/standards/premis/v2/premis-v2-1.xsd'

authoritative schema location for PREMIS

class eulxml.xmlmap.premis.Premis(*args, **kwargs)

Preliminary XmlObject for a PREMIS container element that can contain any of the other top-level PREMIS elements.

Curently only includes mappings for a single object and list of events.

events = <eulxml.xmlmap.fields.NodeListField>

list of PREMIS events, as instances of Event

object = <eulxml.xmlmap.fields.NodeField>

a single PREMIS object

version = <eulxml.xmlmap.fields.StringField>

Version of PREMIS in use; by default, new instances of Premis will be initialized with a version of 2.1

class eulxml.xmlmap.premis.PremisRoot(node=None, context=None, **kwargs)

Base class with a schema declaration for any of the root/stand-alone PREMIS elements:

• <premis> - Premis
• <object> - Object
• <event> - Event
• <agent>
• <rights>

General Usage

Suppose we have an XML object that looks something like this:

<foo>
  <bar>
    <baz>42</baz>
  </bar>
  <bar>
    <baz>13</baz>
  </bar>
  <qux>A</qux>
  <qux>B</qux>
</foo>

For this example, we want to access the value of the first <baz> as a Python integer and the second <baz> as a string value. We also want to access all of them (there may be lots on another <foo>) as a big list of integers. We can create an object to map these fields like this:

from eulxml import xmlmap

class Foo(xmlmap.XmlObject):
    first_baz = xmlmap.IntegerField('bar[1]/baz')
    second_baz = xmlmap.StringField('bar[2]/baz')
    qux = xmlmap.StringListField('qux')

first_baz, second_baz, and all_baz here are attributes of the Foo object. We can access them in later code like this:

>>> foo = xmlmap.load_xmlobject_from_file(foo_path, xmlclass=Foo)
>>> foo.first_baz
42
>>> foo.second_baz
'13'
>>> foo.qux
['A', 'B']
>>> foo.first_baz=5
>>> foo.qux.append('C')
>>> foo.qux[0] = 'Q'
>>> print foo.serialize(pretty=True)
<foo>
  <bar>
    <baz>5</baz>
  </bar>
  <bar>
    <baz>13</baz>
  </bar>
  <qux>Q</qux>
  <qux>B</qux>
<qux>C</qux></foo>

Concepts

xmlmap simplifies access to XML data in Python. Programs can define new XmlObject subclasses representing a type of XML node with predictable structure. Members of these classes can be regular methods and values like in regular Python classes, but they can also be special field objects that associate XPath expressions with Python data elements. When code accesses these fields on the object, the code evaluates the associated XPath expression and converts the data to a Python value.

XmlObject

Most programs will use xmlmap by defining a subclass of XmlObject containing field members.

class eulxml.xmlmap.XmlObject([node[, context]])

A Python object wrapped around an XML node.

Typical programs will define subclasses of XmlObject with various field members. Some programs will use load_xmlobject_from_string() and load_xmlobject_from_file() to create instances of these subclasses. Other programs will create them directly, passing a node argument to the constructor. If the subclass defines a ROOT_NAME then this node argument is optional: Programs may then create instances directly with no constructor arguments.

Programs can also pass an optional dictionary to the constructor to specify namespaces for XPath evaluation.

If keyword arguments are passed in to the constructor, they will be used to set initial values for the corresponding fields on the XmlObject. (Only currently supported for non-list fields.)

Custom equality/non-equality tests: two instances of XmlObject are considered equal if they point to the same lxml element node.

_fields

A dictionary mapping field names to field members. This dictionary includes all of the fields defined on the class as well as those inherited from its parents.

ROOT_NAME = None

A default root element name (without namespace prefix) used when an object of this type is created from scratch.

ROOT_NAMESPACES = {}

A dictionary whose keys are namespace prefixes and whose values are namespace URIs. These namespaces are used to create the root element when an object of this type is created from scratch; should include the namespace and prefix for the root element, if it has one. Any additional namespaces will be added to the root element.

ROOT_NS = None

The default namespace used when an object of this type is created from scratch.

XSD_SCHEMA = None

URI or file path to the XSD schema associated with this XmlObject, if any. If configured, will be used for optional validation when calling load_xmlobject_from_string() and load_xmlobject_from_file(), and with is_valid().

is_empty()

Returns True if the root node contains no child elements, no attributes, and no text. Returns False if any are present.

is_valid()

Determine if the current document is valid as far as we can determine. If there is a schema associated, check for schema validity. Otherwise, return True.

Return type:boolean

node = None

The top-level xml node wrapped by the object

schema_valid()

Determine if the current document is schema-valid according to the configured XSD Schema associated with this instance of XmlObject.

Return type:boolean Raises:Exception if no XSD schema is defined for this XmlObject instance

schema_validate = True

Override for schema validation; if a schema must be defined for the use of xmlmap.fields.SchemaField for a sub-xmlobject that should not be validated, set to False.

schema_validation_errors()

Retrieve any validation errors that occured during schema validation done via is_valid().

Returns:a list of lxml.etree._LogEntry instances Raises:Exception if no XSD schema is defined for this XmlObject instance

serialize(stream=None, pretty=False)

Serialize the contents of the XmlObject to a stream. Serializes current node only; for the entire XML document, use serializeDocument().

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

serializeDocument(stream=None, pretty=False)

Serialize the contents of the entire XML document (including Doctype declaration, if there is one), with an XML declaration, for the current XmlObject to a stream.

If no stream is specified, returns a string. :param stream: stream or other file-like object to write content to (optional) :param pretty: pretty-print the XML output; boolean, defaults to False :rtype: stream passed in or an instance of cStringIO.StringIO

validation_errors()

Return a list of validation errors. Returns an empty list if the xml is schema valid or no schema is defined. If a schema is defined but schema_validate is False, schema validation will be skipped.

Currently only supports schema validation.

Return type:list

xmlschema

A parsed XSD schema instance of lxml.etree.XMLSchema; will be loaded the first time it is requested on any instance of this class if XSD_SCHEMA is set and xmlchema is None. If you wish to load and parse the schema at class definition time, instead of at class instance initialization time, you may want to define your schema in your subclass like this:

XSD_SCHEMA = "http://www.openarchives.org/OAI/2.0/oai_dc.xsd"
xmlschema = xmlmap.loadSchema(XSD_SCHEMA)

xsl_transform(filename=None, xsl=None, return_type=None, **params)

Run an xslt transform on the contents of the XmlObject.

XSLT can be passed in as an XSLT object generated by load_xslt() or as filename or string. If a params dictionary is specified, its items will be passed as parameters to the XSL transformation, and any string values will automatically be encoded as XSL string parameters.

Note

If XSL is being used multiple times, it is recommended to use :meth`:load_xslt` to load and compile the XSLT once.

Parameters:

• filename – xslt filename (optional, one of file and xsl is required)
• xsl – xslt as string OR compiled XSLT object as returned by load_xslt() (optional)
• return_type – type of object to return; optional, defaults to XmlObject; specify unicode or string for text output

Returns:

an instance of XmlObject or the return_type specified

XmlObjectType

class eulxml.xmlmap.core.XmlObjectType

A metaclass for XmlObject.

Analogous in principle to Django’s ModelBase, this metaclass functions rather differently. While it’ll likely get a lot closer over time, we just haven’t been growing ours long enough to demand all of the abstractions built into Django’s models. For now, we do three things:

1. take any Field members and convert them to descriptors,
2. store all of these fields and all of the base classes’ fields in a _fields dictionary on the class, and
3. if any local (non-parent) fields look like self-referential eulxml.xmlmap.NodeField objects then patch them up to refer to the newly-created XmlObject.

Field types

There are several predefined field types. All of them evaluate XPath expressions and map the resultant XML nodes to Python types. They differ primarily in how they map those XML nodes to Python objects as well as in whether they expect their XPath expression to match a single XML node or a whole collection of them.

Field objects are typically created as part of an XmlObject definition and accessed with standard Python object attribute syntax. If a Foo class defines a bar attribute as an xmlmap field object, then an object will reference it simply as foo.bar.

class eulxml.xmlmap.fields.StringField(xpath, normalize=False, choices=None, *args, **kwargs)

Map an XPath expression to a single Python string. If the XPath expression evaluates to an empty NodeList, a StringField evaluates to None.

Takes an optional parameter to indicate that the string contents should have whitespace normalized. By default, does not normalize.

Takes an optional list of choices to restrict possible values.

Supports setting values for attributes, empty nodes, or text-only nodes.

class eulxml.xmlmap.fields.StringListField(xpath, normalize=False, choices=None, *args, **kwargs)

Map an XPath expression to a list of Python strings. If the XPath expression evaluates to an empty NodeList, a StringListField evaluates to an empty list.

Takes an optional parameter to indicate that the string contents should have whitespace normalized. By default, does not normalize.

Takes an optional list of choices to restrict possible values.

Actual return type is NodeList, which can be treated like a regular Python list, and includes set and delete functionality.

class eulxml.xmlmap.fields.IntegerField(xpath, *args, **kwargs)

Map an XPath expression to a single Python integer. If the XPath expression evaluates to an empty NodeList, an IntegerField evaluates to None.

Supports setting values for attributes, empty nodes, or text-only nodes.

class eulxml.xmlmap.fields.IntegerListField(xpath, *args, **kwargs)

Map an XPath expression to a list of Python integers. If the XPath expression evaluates to an empty NodeList, an IntegerListField evaluates to an empty list.

Actual return type is NodeList, which can be treated like a regular Python list, and includes set and delete functionality.

class eulxml.xmlmap.fields.NodeField(xpath, node_class, instantiate_on_get=False, *args, **kwargs)

Map an XPath expression to a single XmlObject subclass instance. If the XPath expression evaluates to an empty NodeList, a NodeField evaluates to None.

Normally a NodeField‘s node_class is a class. As a special exception, it may be the string "self", in which case it recursively refers to objects of its containing XmlObject class.

If an XmlObject contains a NodeField named foo, then the object will automatically have a create_foo() method in addition to its foo property. Code can call this create_foo() method to create the child element if it doesn’t exist; the method will have no effect if the element is already present.

Deprecated instantiate_on_get flag: set to True if you need a non-existent node to be created when the NodeField is accessed. This feature is deprecated: Instead, create your node explicitly with create_foo() as described above.

class eulxml.xmlmap.fields.NodeListField(xpath, node_class, *args, **kwargs)

Map an XPath expression to a list of XmlObject subclass instances. If the XPath expression evalues to an empty NodeList, a NodeListField evaluates to an empty list.

Normally a NodeListField‘s node_class is a class. As a special exception, it may be the string "self", in which case it recursively refers to objects of its containing XmlObject class.

Actual return type is NodeList, which can be treated like a regular Python list, and includes set and delete functionality.

class eulxml.xmlmap.fields.ItemField(xpath, *args, **kwargs)

Access the results of an XPath expression directly. An ItemField does no conversion on the result of evaluating the XPath expression.

class eulxml.xmlmap.fields.SimpleBooleanField(xpath, true, false, *args, **kwargs)

Map an XPath expression to a Python boolean. Constructor takes additional parameter of true, false values for comparison and setting in xml. This only handles simple boolean that can be read and set via string comparison.

Supports setting values for attributes, empty nodes, or text-only nodes.

class eulxml.xmlmap.fields.DateTimeField(xpath, format=None, normalize=False, *args, **kwargs)

Map an XPath expression to a single Python datetime.datetime. If the XPath expression evaluates to an empty NodeList, a DateTimeField evaluates to None.

Parameters:

• format – optional date-time format. Used with datetime.datetime.strptime() and datetime.datetime.strftime() to convert between XML text and Python datetime.datetime objects. If no format is specified, XML dates are converted from full ISO date time format, with or without microseconds, and dates are written out to XML in ISO format via datetime.datetime.isoformat().
• normalize – optional parameter to indicate string contents should have whitespace normalized before converting to datetime. By default, no normalization is done.

For example, given the field definition:

last_update = DateTimeField('last_update', format="%d-%m-%Y %H:%M:%S",
    normalize=True)

and the XML:

<last_update>
    21-04-2012 00:00:00
</last_update>

accessing the field would return:

>>> myobj.last_update
datetime.datetime(2012, 4, 21, 0, 0)

class eulxml.xmlmap.fields.DateTimeListField(xpath, format=None, normalize=False, *args, **kwargs)

Map an XPath expression to a list of Python datetime.datetime objects. If the XPath expression evaluates to an empty NodeList, a DateTimeListField evaluates to an empty list. Date formatting is as described in DateTimeField.

Actual return type is NodeList, which can be treated like a regular Python list, and includes set and delete functionality.

Parameters:

• format – optional date-time format. See DateTimeField for more details.
• normalize – optional parameter to indicate string contents should have whitespace normalized before converting to datetime. By default, no normalization is done.

class eulxml.xmlmap.fields.DateField(xpath, format=None, normalize=False, *args, **kwargs)

Map an XPath expression to a single Python datetime.date, roughly comparable to DateTimeField.

Parameters:

• format – optional date-time format. Used to convert between XML and Python datetime.date; if no format, then the ISO format YYYY-MM-DD (%Y-%m-%d) will be used.
• normalize – optional parameter to indicate string contents should have whitespace normalized before converting to date. By default, no normalization is done.

class eulxml.xmlmap.fields.DateListField(xpath, format=None, normalize=False, *args, **kwargs)

Map an XPath expression to a list of Python datetime.date objects. See DateField and DateTimeListField for more details.

class eulxml.xmlmap.fields.SchemaField(xpath, schema_type, *args, **kwargs)

Schema-based field. At class definition time, a SchemaField will be replaced with the appropriate eulxml.xmlmap.fields.Field type based on the schema type definition.

Takes an xpath (which will be passed on to the real Field init) and a schema type definition name. If the schema type has enumerated restricted values, those will be passed as choices to the Field.

For example, to define a resource type based on the MODS schema, resourceTypeDefinition is a simple type with an enumeration of values, so you could add something like this:

resource_type  = xmlmap.SchemaField("mods:typeOfResource", "resourceTypeDefinition")

Currently only supports simple string-based schema types.

get_field(schema)

Get the requested type definition from the schema and return the appropriate Field.

Parameters:schema – instance of eulxml.xmlmap.core.XsdSchema Return type:eulxml.xmlmap.fields.Field

class eulxml.xmlmap.fields.FloatField(xpath, *args, **kwargs)

Map an XPath expression to a single Python float. If the XPath expression evaluates to an empty NodeList, an FloatField evaluates to None.

Supports setting values for attributes, empty nodes, or text-only nodes.

class eulxml.xmlmap.fields.FloatListField(xpath, *args, **kwargs)

Map an XPath expression to a list of Python floats. If the XPath expression evaluates to an empty NodeList, an IntegerListField evaluates to an empty list.

Actual return type is NodeList, which can be treated like a regular Python list, and includes set and delete functionality.

Other facilities

eulxml.xmlmap.load_xmlobject_from_string(string, xmlclass=<class 'eulxml.xmlmap.core.XmlObject'>, validate=False, resolver=None)

Initialize an XmlObject from a string.

If an xmlclass is specified, construct an instance of that class instead of XmlObject. It should be a subclass of XmlObject. The constructor will be passed a single node.

If validation is requested and the specified subclass of XmlObject has an XSD_SCHEMA defined, the parser will be configured to validate against the specified schema. Otherwise, the parser will be configured to use DTD validation, and expect a Doctype declaration in the xml content.

Parameters:

• string – xml content to be loaded, as a string
• xmlclass – subclass of XmlObject to initialize
• validate – boolean, enable validation; defaults to false

Return type:

instance of XmlObject requested

eulxml.xmlmap.load_xmlobject_from_file(filename, xmlclass=<class 'eulxml.xmlmap.core.XmlObject'>, validate=False, resolver=None)

Initialize an XmlObject from a file.

See load_xmlobject_from_string() for more details; behaves exactly the same, and accepts the same parameters, except that it takes a filename instead of a string.

Parameters:filename – name of the file that should be loaded as an xmlobject. etree.lxml.parse() will accept a file name/path, a file object, a file-like object, or an HTTP or FTP url, however file path and URL are recommended, as they are generally faster for lxml to handle.

eulxml.xmlmap.parseString(string, uri=None)

Read an XML document provided as a byte string, and return a lxml.etree document. String cannot be a Unicode string. Base_uri should be provided for the calculation of relative URIs.

eulxml.xmlmap.parseUri(stream, uri=None)

Read an XML document from a URI, and return a lxml.etree document.

eulxml.xmlmap.loadSchema(uri, base_uri=None)

Load an XSD XML document (specified by filename or URL), and return a lxml.etree.XMLSchema.

Note that frequently loading a schema without using a web proxy may introduce significant network resource usage as well as instability if the schema becomes unavailable. Thus this function will fail if the HTTP_PROXY environment variable is not set.

eulxml.forms - Forms for XmlObjects

eulxml.xpath – Parse and Serialize XPath

Functions and classes for parsing XPath expressions into abstract syntax trees and serializing them back to strings.

This module exports two key functions, parse() and serialize().

eulxml.xpath.parse(xpath_str)

Parse a string XPath expression into an abstract syntax tree. The AST will be built from the classes defined in eulxml.xpath.ast.

eulxml.xpath.serialize(xpath_ast)

Serialize an XPath AST expressed in terms of eulxml.xpath.ast objects into a valid XPath string.

This module does not support evaluating XPath expressions.

eulxml.xpath.ast – Abstract syntax trees for XPath

Abstract Syntax Tree nodes for parsed XPath.

This module contains basic nodes for representing parsed XPath expressions. The parser provided by this module creates its parsed XPath representation from the classes defined in this module. Library callers will mostly not use this module directly, unless they need to produce XPath ASTs from scratch or perhaps introspect ASTs returned by the parser.

eulxml.xpath.ast.serialize(xp_ast)

Serialize an XPath AST as a valid XPath expression.

class eulxml.xpath.ast.UnaryExpression(op, right)

A unary XPath expression. Practially, this means -foo.

op = None

the operator used in the expression

right = None

the expression the operator is applied to

class eulxml.xpath.ast.BinaryExpression(left, op, right)

Any binary XPath expression. a/b; a and b; a | b.

left = None

the left side of the binary expression

op = None

the operator of the binary expression

right = None

the right side of the binary expression

class eulxml.xpath.ast.PredicatedExpression(base, predicates=None)

A filtered XPath expression. $var[1]; (a or b)[foo][@bar].

base = None

the base expression to be filtered

predicates = None

a list of filter predicates

class eulxml.xpath.ast.AbsolutePath(op=u'/', relative=None)

An absolute XPath path. /a/b/c; //a/ancestor:b/@c.

op = None

the operator used to root the expression

relative = None

the relative path after the absolute root operator

class eulxml.xpath.ast.Step(axis, node_test, predicates)

A single step in a relative path. a; @b; text(); parent::foo:bar[5].

axis = None

the step’s axis, or @ or None if abbreviated or undefined

node_test = None

a NameTest or NodeType object describing the test represented

predicates = None

a list of predicates filtering the step

class eulxml.xpath.ast.NameTest(prefix, name)

An element name node test for a Step.

name = None

the node name used for the test, or *

prefix = None

the namespace prefix used for the test, or None if unset

class eulxml.xpath.ast.NodeType(name, literal=None)

A node type node test for a Step.

literal = None

the argument to the node specifier. XPath allows these only for processing-instruction() node tests.

name = None

the node type name, such as node or text

class eulxml.xpath.ast.AbbreviatedStep(abbr)

An abbreviated XPath step. . or ..

abbr = None

the abbreviated step

class eulxml.xpath.ast.VariableReference(name)

An XPath variable reference. $foo; $myns:foo.

name = None

a tuple (prefix, localname) containing the variable name

class eulxml.xpath.ast.FunctionCall(prefix, name, args)

An XPath function call. foo(); my:foo(1); foo(1, ‘a’, $var).

args = None

a list of argument expressions

name = None

the local function name

prefix = None

the namespace prefix, or None if unspecified

Notes

• The re standard library module in Python had a bug prior to 2.6.4 that made it reject patterns with Unicode characters above U+FFFF. As a result, XPath expressions including these characters in node names, namespace abbreviations, or function names will not work correctly in those versions of Python.

  If you don’t know what this means, you almost certainly don’t need to worry about it.

Change & Version Information

The following is a summary of changes and improvements to eulxml. New features in each version should be listed, with any necessary information about installation or upgrade notes.

1.0.1

• Correct six dependency required version
• Fix six dependency in eulxml.xpath so installation can complete and generate parsetab and lextab when six installation is not yet processed. [#20 <https://github.com/emory-libraries/eulxml/issues/20>]

1.0

• Now Python 3 compatible, thanks to Morgan Aubert (@ellmetha).
• bugfix: BooleanField will now return None instead of generating an error when xml is not present and False is not configured as None. Contributed by Roman Voropaev (@roman-voropaev).
• Include xml namespace in base TEI class in eulxml.xmlmap.teimap for xml:id attributes referenced throughout.

0.22.1

• bugfix: workaround for resolver error failing to load schemas in some cases

0.22

• New method (eulxml.xmlmap.load_xslt()) to load and precompile XSLT that will be used more than once.
• Re-worked eulxml.xmlmap.XmlObject.xsl_transform() to avoid malloc errors and segmentation faults and to allow using precompiled XSLT documents.
• Support for float field types in eulxml.xmlmap. Contributed by jilott.

0.21.2

• Bug fix: correctly support parameters in eulxml.xmlmap.XmlObject.xsl_transform()
• Automatically encode string parameter values passed to xsl_transform() as lxml string parameters (lxml.etree.XSLT.strparam)

0.21.1

• Bug fix: eulxml.xmlmap.XmlObject.xsl_transform() now recognizes text output as a valid, non-empty XSL result

0.21

• Add default unicode output of date value for MODS date fields (Date and all date variants)
• Bug fix: XmlObjectForm now uses the field order as defined on the form when updating the XML instance (fix for XML where schema requires fields in a specific order)

0.20.3

• Revert unused namespace cleanup change to serialization it generates less optimal output in certain cases.
• Minor updates to eadmap:
  • Added mapping for xlink:show attribute to DigitalArchivalObject
  • Added mapping for note field Index
  • Changed Note paragraph content from string list to node list, to support formatting.
  • Added mapping for processinfo to ArchivalDescription and Component

0.20.2

• Unused namespaces will now be cleaned up before serialization in eulxml.xmlmap.XmlObject.serialize() and eulxml.xmlmap.XmlObject.serializeDocument()
• eulxml.xmlmap.eadmap have been updated with root element names where possible, to better support using eadmap to update or modify EAD documents.

0.20.1

• Adjust eulxml.xmlmap fields for better results when inspected by sphinx autodoc or other similar tools.

0.20.0

• Update eulxml.xmlmap.mods with support for id attribute on top-level MODS element. Contributed by bcail.
• Update eulxml.xmlmap.eadmap with support for digital archival object tags.
• Add eulxml.xmlmap.fields.DateField to support date fields separately from eulxml.xmlmap.fields.DateTimeField; also includes minimal support for date fields in eulxml.forms.xmlobject.XmlObjectForm.

0.19.1

• Pinned MODS version to 3.4 to guard against new versions of the schema breaking validation

0.19.0

• Corrected a minor bug where schema validation errors were not cleared between multiple validations.
• To avoid permission denied warning for auto-generated parser files, parsetab files are now created in python tempdir if the running user doesn’t have write permission in the package installation directory. [Issue 1]
• When an XSLT transformation results in an empty document, eulxml.xmlap.XmlObject.xsl_transform() now returns None. [Issue 6]
• Development requirements can now be installed as an optional requirement of the eulxml package (pip install "eulxml[dev]").
• Unit tests have been updated to use nose
• New functionality in eulxml.xmlmap.cerp for parsing email dates and generating CERP xml from a Python email message object.

0.18.0 - Formset Ordering and DateTime

• eulxml.forms.xmlobject.XmlObjectForm formsets now support can_order.
• eulxml.xmlmap.fields.DateTimeField is now included in available eulxml.xmlmap fields. This replaces the previously officially-unreleased, under-documented and -tested and misnamed DateField. Date-time format handling and whitespace normalization contributed by jheath-.

0.17.1 - Bugfix Release

• Fixed an error in eulxml.xpath parse that resulted in parse errors when other lexers are defined.

0.17.0 - Minor Enhancements

• eulxml.xmlmap.XmlObject now supports lazy-loading for XSD Schemas. To take advantage of this feature, XmlObject subclasses should define an XSD_SCHEMA location but should not set an xmlschema.
• When field mapped on a eulxml.xmlmap.XmlObject is deleted, any XPath predicates that could have been automatically constructed when setting the value will be deleted from the XmlObject where possible, if they are otherwise empty.

0.16.0 - MODS and PREMIS

• Add basic support for MODS in eulxml.xmlmap.mods.
• Add basic support for PREMIS in eulxml.xmlmap.premis.
• Minor logging and error handling improvements.

0.15.3 - Minor Enhancement

• Downgrade the lack of an HTTP_PROXY set in the environment from a RuntimeError to a Warning with schema validation disabled.

0.15.2 - Bugfix Release

• Fixed an error in the dependency structure that prevented the package from being used after installation through PyPI.

0.15.1 - Bugfix Release

• Fixed an error in the dependency structure that prevented the package from being installed through PyPI.

0.15.0 - Initial Release

• Split out xml-related components (xpath, xmlmap, and forms) from eulcore into eulxml for easier re-use.

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