One document matched: draft-legg-xed-schema-00.txt
INTERNET-DRAFT S. Legg
draft-legg-xed-schema-00.txt Adacel Technologies
Intended Category: Standard Track D. Prager
Deakin University
August 7, 2003
XED: Schema Operational Attributes
Copyright (C) The Internet Society (2003). All Rights Reserved.
Status of this Memo
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Abstract
This document defines additional subschema operational attributes for
the XML Enabled Directory (XED) that allow user defined attribute
syntaxes to be imported into a directory server. User defined
syntaxes specified in XML Schema, RELAX NG or Abstract Syntax
Notation One (ASN.1), or specified as a document type declaration
(DTD), are supported.
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Table of Contents
1. Introduction .................................................. 2
2. Conventions ................................................... 2
3. Additional System Schema ...................................... 3
3.1 The Schema Identity Syntax ................................ 3
3.2 The Identified Schema Syntax .............................. 3
3.3 The Identified DTD Syntax ................................. 4
3.4 The schemaIdentityMatch Matching Rule ..................... 5
3.5 The declarations Attribute ................................ 5
3.6 The doctypedecls Attribute ................................ 6
4. Referencing Imported Schemas .................................. 6
5. Example ....................................................... 7
6. IANA Considerations ........................................... 11
7. Security Considerations ....................................... 12
8. Acknowledgements .............................................. 12
9. Normative References .......................................... 12
10. Informative References ....................................... 14
11. Intellectual Property Notice ................................. 14
12. Copyright Notice ............................................. 15
13. Authors' Addresses ........................................... 15
Appendix A. XED Schema in ASN.1 .................................. 16
Appendix B. XED Schema in ASN.1 Schema ........................... 17
1. Introduction
This document defines additional subschema operational attributes for
the XML Enabled Directory (XED) [XED] that allow user defined
attribute syntaxes to be imported into a directory server. User
defined syntaxes specified in XML Schema [XSD1], RELAX NG [RNG] or
Abstract Syntax Notation One (ASN.1) [ASD] [X680], or specified as a
document type declaration (DTD) [XML], are supported.
The Attribute Type Description syntax [SYNTAX] is extended to enable
definitions from an imported user defined schema to be referenced in
the definition of the syntax of an attribute type.
2. Conventions
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", and "MAY" in this document are
to be interpreted as described in RFC 2119 [BCP14]. The key word
"OPTIONAL" is exclusively used with its ASN.1 meaning.
Throughout this document the term "type" is always qualified as
either an attribute type, ASN.1 type, or XML Schema type, as
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appropriate.
This specification makes use of definitions from the XML Information
Set (Infoset) [ISET]. In particular, information item property names
are presented per the Infoset, e.g. [local name]. In the sections
that follow, the term "element" shall be taken to mean an Infoset
element information item.
The term "attribute" shall be taken to mean a directory attribute,
not an Infoset attribute information item.
This document uses the namespace prefix "asn1:" to stand for the
namespace name "http://xmled.info/ns/ASN.1/0702/00" though in
practice any valid namespace prefix is permitted.
3. Additional System Schema
Additional subschema operational attributes are defined to hold used
supplied schema definitions. These attributes require the definition
of new attribute syntaxes and a new matching rule [MODELS].
3.1 The Schema Identity Syntax
A value of the Schema Identity syntax is a URI [URI] identifying a
schema definition document.
The LDAP definition for the Schema Identity syntax is:
( 1.2.36.79672281.1.5.4 DESC 'Schema Identity' )
The LDAP-specific encoding for a value of the Schema Identity syntax
is the URI character string.
The Schema Identity syntax corresponds to the SchemaIdentity ASN.1
type [GLUE].
3.2 The Identified Schema Syntax
A value of the Identified Schema syntax is a URI identifying a schema
definition along with the schema definition document itself.
The LDAP definition for the Identified Schema syntax is:
( 1.2.36.79672281.1.5.5 DESC 'Identified Schema' )
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The ASN.1 type corresponding to the Identified Schema syntax is
defined as follows, assuming AUTOMATIC TAGS:
IdentifiedSchema ::= SEQUENCE {
identifier SchemaIdentity,
definitions AnyType
(WITH COMPONENTS { ...,
content (CONSTRAINED BY {
-- contains a single child element,
-- either asn1:schema, xsd:schema or
-- rng:grammar -- }) })
The content component of the AnyType type is constrained to contain a
child element which is one of:
a) an element with the [local name] "schema" and [namespace name]
"http://xmled.info/ns/ASN.1/0702/00" (i.e. an ASN.1 Schema),
b) an element with the [local name] "schema" and [namespace name]
"http://www.w3.org/2001/XMLSchema" (i.e. an XML Schema),
c) an element with the [local name] "grammar" and [namespace name]
"http://relaxng.org/ns/structure/1.0" (i.e. a RELAX NG schema).
The LDAP-specific encoding of a value of the Identified Schema syntax
is defined to be the same as the encoding of the value according to
the "transfer-dxer" encoding option [XFER].
3.3 The Identified DTD Syntax
A value of the Identified DTD syntax is a URI identifying the DTD
along with the DTD document itself.
The LDAP definition for the Identified DTD syntax is:
( 1.2.36.79672281.1.5.6 DESC 'Identified DTD' )
The ASN.1 type corresponding to the Identified DTD syntax is defined
as follows, assuming AUTOMATIC TAGS:
IdentifiedDTD ::= SEQUENCE {
identifier SchemaIdentity,
definitions UTF8String (CONSTRAINED BY {
-- contains text conforming to
-- the prolog production of XML -- }) }
The definitions component of the IdentifiedDTD type is constrained to
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contain text conforming to the prolog production of XML [XML], which
in particular contains a doctypedecl (DTD). Note that in the DXER
encoding [DXER] of a value of the IdentifiedDTD type, markup in the
definitions component must be escaped. This is most easily achieved
by encoding the string value of the definitions component within a
CDATA section.
3.4 The schemaIdentityMatch Matching Rule
The schemaIdentityMatch matching rule compares an assertion value of
the Schema Identity syntax to an attribute value of a syntax (e.g the
Identified Schema syntax or the Identified DTD syntax) whose
corresponding ASN.1 type is a SEQUENCE with a mandatory first
component of the SchemaIdentity ASN.1 type.
Note that the assertion syntax of this matching rule differs from the
attribute syntax of attributes for which this is the equality
matching rule.
The rule evaluates to TRUE if and only if the assertion value and the
first component of the attribute value have the same number of
characters and corresponding characters have the same code point.
The LDAP-style definition for the schemaIdentityMatch matching rule
is:
( 1.2.36.79672281.1.13.10 NAME 'schemaIdentityMatch'
SYNTAX 1.2.36.79672281.1.5.4 )
The X.500-style definition for the schemaIdentityMatch matching rule
is:
schemaIdentityMatch MATCHING-RULE ::= {
SYNTAX SchemaIdentity
ID { 1 2 36 79672281 1 13 10 } }
3.5. The declarations Attribute
User defined schema documents, other than DTDs, are imported into a
XED server as values of the declarations attribute in the subschema
subentry [MODELS]. A particular schema document potentially appears
in more than one subschema subentry, in which case the same
identifier MUST be used for the schema document throughout the
Directory Information Tree (DIT) [MODELS].
The LDAP-style definition for the declarations attribute is:
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( 1.2.36.79672281.1.21.0 NAME 'declarations'
EQUALITY schemaIdentityMatch
SYNTAX 1.2.36.79672281.1.5.5
USAGE directoryOperation )
The X.500-style definition for the declarations attribute is:
declarations ATTRIBUTE ::= {
WITH SYNTAX IdentifiedSchema
EQUALITY MATCHING RULE schemaIdentityMatch
USAGE directoryOperation
ID { 1 2 36 79672281 1 21 0 } }
3.6 The doctypedecls Attribute
User defined DTDs are imported into a XED server as values of the
doctypedecls attribute in the subschema subentry. A particular DTD
potentially appears in more than one subschema subentry, in which
case the same identifier MUST be used for the DTD throughout the DIT.
The LDAP-style definition for the doctypedecls attribute is:
( 1.2.36.79672281.1.21.1 NAME 'doctypedecls'
EQUALITY schemaIdentityMatch
SYNTAX 1.2.36.79672281.1.5.6
USAGE directoryOperation )
The X.500-style definition for the doctypedecls attribute is:
doctypedecls ATTRIBUTE ::= {
WITH SYNTAX IdentifiedDTD
EQUALITY MATCHING RULE schemaIdentityMatch
USAGE directoryOperation
ID { 1 2 36 79672281 1 21 1 } }
4. Referencing Imported Schemas
Since the second edition of X.500, users have theoretically been able
to import their own attribute syntax definitions into subschema in
the form of ASN.1 type definitions. The attributeSyntax component of
the AttributeTypeDescription ASN.1 type [X501] (the associated ASN.1
type for the Attribute Type Description syntax [SYNTAX]) is a
character string permitted to contain the text of an ASN.1 type
definition. However, the LDAP-specific encoding of the
AttributeTypeDescription ASN.1 type replaces the character string
with an OBJECT IDENTIFIER [X680], effectively allowing only
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predefined syntaxes in LDAP.
This specification extends the LDAP-specific encoding of the
Attribute Type Description syntax to include a field to render the
character string content of the attributeSyntax component, and
additionally permits the syntax to be described using ASN.1 Schema,
which is more easily parsed than ASN.1 type notation. The XED
specification for integrating schema languages [GLUE] enables XML
Schema, RELAX NG and DTD definitions to be simply referenced from an
ASN.1 type definition.
The Augmented Backus-Naur Form (ABNF) [ABNF] rule
<AttributeTypeDescription> [MODELS] is extended by the inclusion of
the following ABNF placed immediately following the ABNF for the
optional SYNTAX field:
[ SP "SYNTAX-DEFINITION" SP qdstring ]
The content corresponding to the <qdstring> rule is the character
string content of the attributeSyntax component of an instance of the
AttributeTypeDescription ASN.1 type.
The attributeSyntax component is permitted to contain any character
string which is a valid ASN.1 Schema type definition (i.e. an ASN.1
Schema <type> element), in addition to the content already prescribed
by X.501 [X501].
An attribute syntax defined through a SYNTAX-DEFINITION field is not
required to have an associated syntax object identifier [SYNTAX]
(thus an attribute definition with a SYNTAX-DEFINITION field is not
required to also have a SYNTAX field).
If the SYNTAX-DEFINITION string contains an ASN.1 Schema <type>
element and the SYNTAX field is absent then the LDAP-specific
encoding for values of the attribute is assumed to be the same as the
"transfer-dxer" encoding.
5. Example
Suppose a directory administrator wishes to define two new attributes
to hold data comforming to, the Address datatype from Addresses for
International Purchase Order schema (address.xsd) [XSD0], and the
<purchaseOrder> element from the International Purchase Order Schema
(ipo.xsd) [XSD0].
The first step is to install the schema definitions into the
subschema subentry. Using LDAP, this is done by adding the two
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following (much abbreviated) values to the declarations attribute in
the subschema subentry:
<?xml version="1.0"?>
<item>
<identifier>http://www.example.com/schemas/ipo.xsd</identifier>
<definitions>
<schema targetNamespace="http://www.example.com/IPO"
xmlns="http://www.w3.org/2001/XMLSchema"
xmlns:ipo="http://www.example.com/IPO">
<annotation>
<documentation xml:lang="en">
International Purchase order schema for Example.com
Copyright 2000 Example.com. All rights reserved.
</documentation>
</annotation>
etc.
</schema>
</definitions>
</item>
<?xml version="1.0"?>
<item>
<identifier>http://www.example.com/schemas/address.xsd</identifier>
<definitions>
<schema targetNamespace="http://www.example.com/IPO"
xmlns="http://www.w3.org/2001/XMLSchema"
xmlns:ipo="http://www.example.com/IPO">
<annotation>
<documentation xml:lang="en">
Addresses for International Purchase order schema
Copyright 2000 Example.com. All rights reserved.
</documentation>
</annotation>
etc.
</schema>
</definitions>
</item>
Note that the LDAP-specific encoding for values of the declarations
attribute is exactly the same as the "transfer-dxer" encoding.
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The value could also be added using XLDAP [XLDAP], using exactly the
same markup for the <item> elements.
An attribute with the Address datatype as its syntax is defined for
LDAP like so:
( 1.2.36.79672281.1.4.1.0 NAME 'ipo-address'
SYNTAX-DEFINITION
'<type xmlns:ipo="http://www.example.com/IPO"
ref="ipo:Address"/>')
which is also the LDAP-specific encoding of the value of the
Attribute Type Description syntax that must be added to the
attributeTypes attribute in the subschema subentry to publish the
definition of the ipo-address attribute.
The "transfer-dxer" encoding for the definition of the ipo-address
attribute is:
<?xml version="1.0"?>
<item>
<identifier>1.2.36.79672281.1.4.1.0</identifier>
<name>
<item>ipo-address</item>
</name>
<information>
<attributeSyntax>
<![CDATA[
<type xmlns:ipo="http://www.example.com/IPO"
ref="ipo:Address"/>
]]>
</attributeSyntax>
</information>
</item>
The attributeSyntax component is a DirectoryString [X501] hence
markup embedded in it must be escaped (in this case using a CDATA
section).
The definition of the ipo-address attribute could also be added to a
subschema subentry using XLDAP, using exactly the same markup for the
<item> element.
An attribute whose values each contain a single <purchaseOrder>
element is defined for LDAP like so:
( 1.2.36.79672281.1.4.1.1 NAME 'purchaseOrder'
SYNTAX-DEFINITION
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'<type xmlns:ipo="http://www.example.com/IPO">
<choice>
<element ref="ipo:purchaseOrder/>
</choice>
</type>' )
The "transfer-dxer" encoding for the definition of the purchaseOrder
attribute is:
<?xml version="1.0"?>
<item>
<identifier>1.2.36.79672281.1.4.1.1</identifier>
<name>
<item>purchaseOrder</item>
</name>
<information>
<attributeSyntax>
<![CDATA[
<type xmlns:ipo="http://www.example.com/IPO">
<choice>
<element ref="ipo:purchaseOrder/>
</choice>
</type>
]]>
</attributeSyntax>
</information>
</item>
Now consider the X.500-style definitions for the ipo-address and
purchaseOrder attributes.
ipo-address ATTRIBUTE ::= {
WITH SYNTAX XSD-Type {
"http://www.example.com/IPO",
"Address"
}
ID { 1 2 36 79672281 1 4 1 0 } }
purchaseOrder ATTRIBUTE ::= {
WITH SYNTAX Contained-XSD-Element {
"http://www.example.com/IPO",
"purchaseOrder"
}
ID { 1 2 36 79672281 1 4 1 1 } }
An ASN.1 Schema representation for these two information objects is
(where the namespace prefix "inf:" stands for the namespace name
"http://xmled.info/ns/X.500/4/InformationFramework/00"):
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<namedObject name="ipo-address" class="inf:ATTRIBUTE">
<object>
<Type>
<type xmlns:ipo="http://www.example.com/IPO"
ref="ipo:Address"/>
</Type>
<id literal="1.2.36.79672281.1.4.1.0"/>
</object>
</namedObject>
<namedObject name="purchaseOrder" class="inf:ATTRIBUTE">
<object>
<Type>
<type xmlns:ipo="http://www.example.com/IPO">
<choice>
<element ref="ipo:purchaseOrder/>
</choice>
</type>
</Type>
<id literal="1.2.36.79672281.1.4.1.1"/>
</object>
</namedObject>
Note the correspondence between the content of the <Type> fields in
the information objects, the SYNTAX-DEFINITION fields in the LDAP
attribute definitions, and the <attributeSyntax> components in the
"transfer-dxer" encodings of AttributeTypeDescription.
6. IANA Considerations
The Internet Assigned Numbers Authority (IANA) is requested to update
the LDAP descriptors registry [BCP64] as indicated by the following
templates:
Subject: Request for LDAP Descriptor Registration
Descriptor (short name): schemaIdentityMatch
Object Identifier: 1.2.36.79672281.1.13.10
Person & email address to contact for further information:
Steven Legg <steven.legg@adacel.com.au>
Usage: other (matching rule)
Specification: RFC XXXX
Author/Change Controller: IESG
Subject: Request for LDAP Descriptor Registration
Descriptor (short name): declarations
Object Identifier: 1.2.36.79672281.1.21.0
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Person & email address to contact for further information:
Steven Legg <steven.legg@adacel.com.au>
Usage: attribute type
Specification: RFC XXXX
Author/Change Controller: IESG
Subject: Request for LDAP Descriptor Registration
Descriptor (short name): doctypedecls
Object Identifier: 1.2.36.79672281.1.21.1
Person & email address to contact for further information:
Steven Legg <steven.legg@adacel.com.au>
Usage: attribute type
Specification: RFC XXXX
Author/Change Controller: IESG
The object identifiers have been assigned for use in this
specification by Adacel Technologies, under an arc assigned to Adacel
by Standards Australia.
7. Security Considerations
Attributes of directory entries are used to provide descriptive
information about the real-world objects they represent, which can be
people, organizations and devices, among other things. Most
countries have privacy laws regarding the publication of information
about people.
8. Acknowledgements
This document and the technology it describes are a product of a
joint research project between Adacel Technologies Limited and Deakin
University on leveraging existing directory technology to produce an
XML-based directory service.
9. Normative References
[BCP14] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[ABNF] Crocker, D. and P. Overell, "Augmented BNF for Syntax
Specifications: ABNF", RFC 2234, November 1997.
[URI] Berners-Lee, T., Fielding, R. and L. Masinter, "Uniform
Resource Identifiers (URI): Generic Syntax", RFC 2396,
August 1998.
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[BCP64] Zeilenga, K., "Internet Assigned Numbers Authority (IANA)
Considerations for the Lightweight Directory Access Protcol
(LDAP)", BCP 64, RFC 3383, September 2002.
[MODELS] Zeilenga, K., "LDAP: Directory Information Models",
draft-ietf-ldapbis-models-xx.txt, a work in progress, March
2003.
[SYNTAX] Legg, S. and K. Dally, "LDAP: Syntaxes and Matching Rules",
draft-ietf-ldapbis-syntaxes-xx.txt, a work in progress,
June 2003.
[XFER] Legg, S., "LDAP: Transfer Encoding Options",
draft-legg-ldap-transfer-xx.txt, a work in progress, August
2003.
[GLUE] Legg, S. and D. Prager, "XED: Schema Language Integration",
draft-legg-xed-glue-xx.txt, a work in progress, August
2003.
[ASD] Legg, S. and D. Prager, "ASN.1 Schema: An XML
Representation for ASN.1 Specifications",
draft-legg-xed-asd-xx.txt, a work in progress, August 2003.
[DXER] Legg, S. and D. Prager, "Directory XML Encoding Rules for
ASN.1 Types", draft-legg-xed-dxer-xx.txt, a work in
progress, August 2003.
[X501] ITU-T Recommendation X.501 (02/01) | ISO/IEC 9594-2:2001,
Information technology - Open Systems Interconnection - The
Directory: Models
[X680] ITU-T Recommendation X.680 (07/02) | ISO/IEC 8824-1:2002,
Information technology - Abstract Syntax Notation One
(ASN.1): Specification of basic notation
[XML] Bray, T., Paoli, J., Sperberg-McQueen, M. and E. Maler,
"Extensible Markup Language (XML) 1.0 (Second Edition)",
W3C Recommendation, http://www.w3.org/TR/2000/REC-
xml-20001006, October 2000.
[ISET] Cowan, J. and R. Tobin, "XML Information Set",
http://www.w3.org/TR/2001/REC-xml-infoset-20011024, October
2001.
[XSD1] Thompson, H., Beech, D., Maloney, M. and N. Mendelsohn,
"XML Schema Part 1: Structures", W3C Recommendation,
http://www.w3.org/TR/2001/REC-xmlschema-1-20010502, May
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2001.
[RNG] Clark, J. and M. Makoto, "RELAX NG Tutorial", OASIS
Committee Specification, http://www.oasis-
open.org/committees/relax-ng/tutorial-20011203.html,
December 2001.
10. Informative References
[BCP11] Hovey, R. and S. Bradner, "The Organizations Involved in
the IETF Standards Process", BCP 11, RFC 2028, October
1996.
[XED] Legg, S. and D. Prager, "The XML Enabled Directory", draft-
legg-xed-roadmap-xx.txt, a work in progress, August 2003.
[XLDAP] Legg, S. and D. Prager, "XML Lightweight Directory Access
Protocol", draft-legg-xed-xldap-xx.txt, a work in progress,
August 2003.
[XSD0] Fallside, D., "XML Schema Part 0: Primer", W3C
Recommendation, http://www.w3.org/TR/2001/REC-
xmlschema-0-20010502, May 2001.
11. Intellectual Property Notice
The IETF takes no position regarding the validity or scope of any
intellectual property or other rights that might be claimed to
pertain to the implementation or use of the technology described in
this document or the extent to which any license under such rights
might or might not be available; neither does it represent that it
has made any effort to identify any such rights. Information on the
IETF's procedures with respect to rights in standards-track and
standards-related documentation can be found in BCP-11. [BCP11]
Copies of claims of rights made available for publication and any
assurances of licenses to be made available, or the result of an
attempt made to obtain a general license or permission for the use of
such proprietary rights by implementors or users of this
specification can be obtained from the IETF Secretariat.
The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary
rights which may cover technology that may be required to practice
this standard. Please address the information to the IETF Executive
Director.
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12. Copyright Notice
Copyright (C) The Internet Society (2003). All Rights Reserved.
This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of
developing Internet standards in which case the procedures for
copyrights defined in the Internet Standards process must be
followed, or as required to translate it into languages other than
English.
The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.
This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
13. Authors' Addresses
Dr. Steven Legg
Adacel Technologies Ltd.
250 Bay Street
Brighton, Victoria 3186
AUSTRALIA
Phone: +61 3 8530 7710
Fax: +61 3 8530 7888
EMail: steven.legg@adacel.com.au
Dr. Daniel Prager
C/o Professor Lynn Batten
Department of Computing and Mathematics
Deakin University
Geelong, Victoria 3217
AUSTRALIA
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EMail: dan@layabout.net
EMail: lmbatten@deakin.edu.au
Appendix A. XED Schema in ASN.1
This appendix is normative.
XEDSchemaOperationalAttributes
{iso(1) 2 36 79672281 xed(3) module(0) schema(2)}
-- Copyright (C) The Internet Society (2003). This version of
-- this ASN.1 module is part of RFC XXXX; see the RFC itself
-- for full legal notices.
-- The namespace name for this module is:
-- http://xmled.info/ns/XED/1/XEDSchemaOperationalAttributes/00
-- The SchemaIdentity for this module is:
-- http://xmled.info/id/XED/1/XEDSchemaOperationalAttributes/00
DEFINITIONS
AUTOMATIC TAGS EXTENSIBILITY IMPLIED ::= BEGIN
IMPORTS
ATTRIBUTE,
MATCHING-RULE
FROM InformationFramework
{joint-iso-itu-t ds(5) module(1)
informationFramework(1) 4}
AnyType,
AnyURI
FROM SchemaLanguageIntegration
{iso(1) 2 36 79672281 xed(3) module(0) sli(1)}
;
SchemaIdentity ::= AnyURI
schemaIdentityMatch MATCHING-RULE ::= {
SYNTAX SchemaIdentity
ID { 1 2 36 79672281 1 13 10 } }
IdentifiedSchema ::= SEQUENCE {
identifier SchemaIdentity,
definitions AnyType
(WITH COMPONENTS { ...,
content (CONSTRAINED BY {
-- contains a single child element,
-- either asn1:schema, xsd:schema or
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-- rng:grammar -- }) }) }
declarations ATTRIBUTE ::= {
WITH SYNTAX IdentifiedSchema
EQUALITY MATCHING RULE schemaIdentityMatch
USAGE directoryOperation
ID { 1 2 36 79672281 1 21 0 } }
IdentifiedDTD ::= SEQUENCE {
identifier SchemaIdentity,
definitions UTF8String (CONSTRAINED BY {
-- contains text conforming to
-- the prolog production of XML -- }) }
doctypedecls ATTRIBUTE ::= {
WITH SYNTAX IdentifiedDTD
EQUALITY MATCHING RULE schemaIdentityMatch
USAGE directoryOperation
ID { 1 2 36 79672281 1 21 1 } }
END
Appendix B. XED Schema in ASN.1 Schema
This appendix is non-normative.
<?xml version="1.0"?>
<asn1:schema
xmlns:asn1="http://xmled.info/ns/ASN.1/0702/00"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:if="http://xmled.info/ns/X.500/4/InformationFramework/00"
xmlns:tns="http://xmled.info/ns/XED/1/XEDSchemaOperationalAttri
butes/00"
targetNamespace="http://xmled.info/ns/XED/1/XEDSchemaOperationa
lAttributes/00"
name="XEDSchemaOperationalAttributes"
identifier="1.2.36.79672281.3.0.2"
extensibilityImplied="true">
<import name="SchemaLanguageIntegration"
schemaLocation="SchemaLanguageIntegration.asd"/>
<import
name="InformationFramework"
namespace="http://xmled.info/ns/X.500/4/InformationFramework/00"
schemaLocation="InformationFramework.asd"/>
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<namedType name="SchemaIdentity" type="asn1:AnyURI"/>
<namedObject name="schemaIdentityMatch" class="if:MATCHING-RULE">
<object>
<AssertionType type="tns:SchemaIdentity"/>
<id literal="1.2.36.79672281.1.13.10"/>
</object>
</namedObject>
<namedType name="IdentifiedSchema">
<type>
<sequence>
<element name="identifier" type="tns:SchemaIdentity"/>
<element name="definitions">
<type>
<constrained type="asn1:AnyType">
<withComponents partial="true">
<component name="content">
<constrainedBy/>
</component>
</withComponents>
</constrained>
</type>
</element>
</sequence>
</type>
</namedType>
<namedObject name="declarations" class="if:ATTRIBUTE">
<object>
<Type type="tns:IdentifiedSchema"/>
<equality-match object="tns:schemaIdentityMatch"/>
<usage literal="directoryOperation"/>
<id literal="1.2.36.79672281.1.21.0"/>
</object>
</namedObject>
<namedType name="IdentifiedDTD">
<type>
<sequence>
<element name="identifier" type="tns:SchemaIdentity"/>
<element name="definitions">
<type>
<constrained type="asn1:UTF8String">
<constrainedBy/>
</constrained>
</type>
</element>
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</sequence>
</type>
</namedType>
<namedObject name="doctypedecls" class="if:ATTRIBUTE">
<object>
<Type type="tns:IdentifiedDTD"/>
<equality-match object="tns:schemaIdentityMatch"/>
<usage literal="directoryOperation"/>
<id literal="1.2.36.79672281.1.21.1"/>
</object>
</namedObject>
</asn1:schema>
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| PAFTECH AB 2003-2026 | 2026-04-24 05:47:59 |