xmlschema.dtd

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  Copyright 2004 The Apache Software Foundation

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->
<!-- DTD for XML Schemas: Part 1: Structures
     Public Identifier: "-//W3C//DTD XMLSCHEMA 200102//EN"
     Official Location: http://www.w3.org/2001/XMLSchema.dtd -->
<!-- $Id: XMLSchema.dtd,v 1.2 2004/03/18 16:40:34 jfarcand Exp $ -->
<!-- Note this DTD is NOT normative, or even definitive. -->           <!--d-->
<!-- prose copy in the structures REC is the definitive version -->    <!--d-->
<!-- (which shouldn't differ from this one except for this -->         <!--d-->
<!-- comment and entity expansions, but just in case) -->              <!--d-->
<!-- With the exception of cases with multiple namespace
     prefixes for the XML Schema namespace, any XML document which is
     not valid per this DTD given redefinitions in its internal subset of the
     'p' and 's' parameter entities below appropriate to its namespace
     declaration of the XML Schema namespace is almost certainly not
     a valid schema. -->

<!-- The simpleType element and its constituent parts
     are defined in XML Schema: Part 2: Datatypes -->
<!ENTITY % xs-datatypes PUBLIC 'datatypes' 'datatypes.dtd' >

<!ENTITY % p 'xs:'> <!-- can be overriden in the internal subset of a
                         schema document to establish a different
                         namespace prefix -->
<!ENTITY % s ':xs'> <!-- if %p is defined (e.g. as foo:) then you must
                         also define %s as the suffix for the appropriate
                         namespace declaration (e.g. :foo) -->
<!ENTITY % nds 'xmlns%s;'>

<!-- Define all the element names, with optional prefix -->
<!ENTITY % schema "%p;schema">
<!ENTITY % complexType "%p;complexType">
<!ENTITY % complexContent "%p;complexContent">
<!ENTITY % simpleContent "%p;simpleContent">
<!ENTITY % extension "%p;extension">
<!ENTITY % element "%p;element">
<!ENTITY % unique "%p;unique">
<!ENTITY % key "%p;key">
<!ENTITY % keyref "%p;keyref">
<!ENTITY % selector "%p;selector">
<!ENTITY % field "%p;field">
<!ENTITY % group "%p;group">
<!ENTITY % all "%p;all">
<!ENTITY % choice "%p;choice">
<!ENTITY % sequence "%p;sequence">
<!ENTITY % any "%p;any">
<!ENTITY % anyAttribute "%p;anyAttribute">
<!ENTITY % attribute "%p;attribute">
<!ENTITY % attributeGroup "%p;attributeGroup">
<!ENTITY % include "%p;include">
<!ENTITY % import "%p;import">
<!ENTITY % redefine "%p;redefine">
<!ENTITY % notation "%p;notation">

<!-- annotation elements -->
<!ENTITY % annotation "%p;annotation">
<!ENTITY % appinfo "%p;appinfo">
<!ENTITY % documentation "%p;documentation">

<!-- Customisation entities for the ATTLIST of each element type.
     Define one of these if your schema takes advantage of the
     anyAttribute='##other' in the schema for schemas -->

<!ENTITY % schemaAttrs ''>
<!ENTITY % complexTypeAttrs ''>
<!ENTITY % complexContentAttrs ''>
<!ENTITY % simpleContentAttrs ''>
<!ENTITY % extensionAttrs ''>
<!ENTITY % elementAttrs ''>
<!ENTITY % groupAttrs ''>
<!ENTITY % allAttrs ''>
<!ENTITY % choiceAttrs ''>
<!ENTITY % sequenceAttrs ''>
<!ENTITY % anyAttrs ''>
<!ENTITY % anyAttributeAttrs ''>
<!ENTITY % attributeAttrs ''>
<!ENTITY % attributeGroupAttrs ''>
<!ENTITY % uniqueAttrs ''>
<!ENTITY % keyAttrs ''>
<!ENTITY % keyrefAttrs ''>
<!ENTITY % selectorAttrs ''>
<!ENTITY % fieldAttrs ''>
<!ENTITY % includeAttrs ''>
<!ENTITY % importAttrs ''>
<!ENTITY % redefineAttrs ''>
<!ENTITY % notationAttrs ''>
<!ENTITY % annotationAttrs ''>
<!ENTITY % appinfoAttrs ''>
<!ENTITY % documentationAttrs ''>

<!ENTITY % complexDerivationSet "CDATA">
      <!-- #all or space-separated list drawn from derivationChoice -->
<!ENTITY % blockSet "CDATA">
      <!-- #all or space-separated list drawn from
                      derivationChoice + 'substitution' -->

<!ENTITY % mgs '%all; | %choice; | %sequence;'>
<!ENTITY % cs '%choice; | %sequence;'>
<!ENTITY % formValues '(qualified|unqualified)'>


<!ENTITY % attrDecls    '((%attribute;| %attributeGroup;)*,(%anyAttribute;)?)'>

<!ENTITY % particleAndAttrs '((%mgs; | %group;)?, %attrDecls;)'>

<!-- This is used in part2 -->
<!ENTITY % restriction1 '((%mgs; | %group;)?)'>

%xs-datatypes;

<!-- the duplication below is to produce an unambiguous content model
     which allows annotation everywhere -->
<!ELEMENT %schema; ((%include; | %import; | %redefine; | %annotation;)*,
                    ((%simpleType; | %complexType;
                      | %element; | %attribute;
                      | %attributeGroup; | %group;
                      | %notation; ),
                     (%annotation;)*)* )>
<!ATTLIST %schema;
   targetNamespace      %URIref;               #IMPLIED
   version              CDATA                  #IMPLIED
   %nds;                %URIref;               #FIXED 'http://www.w3.org/2001/XMLSchema'
   xmlns                CDATA                  #IMPLIED
   finalDefault         %complexDerivationSet; ''
   blockDefault         %blockSet;             ''
   id                   ID                     #IMPLIED
   elementFormDefault   %formValues;           'unqualified'
   attributeFormDefault %formValues;           'unqualified'
   xml:lang             CDATA                  #IMPLIED
   %schemaAttrs;>
<!-- Note the xmlns declaration is NOT in the Schema for Schemas,
     because at the Infoset level where schemas operate,
     xmlns(:prefix) is NOT an attribute! -->
<!-- The declaration of xmlns is a convenience for schema authors -->
 
<!-- The id attribute here and below is for use in external references
     from non-schemas using simple fragment identifiers.
     It is NOT used for schema-to-schema reference, internal or
     external. -->

<!-- a type is a named content type specification which allows attribute
     declarations-->
<!-- -->

<!ELEMENT %complexType; ((%annotation;)?,
                         (%simpleContent;|%complexContent;|
                          %particleAndAttrs;))>

<!ATTLIST %complexType;
          name      %NCName;                        #IMPLIED
          id        ID                              #IMPLIED
          abstract  %boolean;                       #IMPLIED
          final     %complexDerivationSet;          #IMPLIED
          block     %complexDerivationSet;          #IMPLIED
          mixed (true|false) 'false'
          %complexTypeAttrs;>

<!-- particleAndAttrs is shorthand for a root type -->
<!-- mixed is disallowed if simpleContent, overriden if complexContent
     has one too. -->

<!-- If anyAttribute appears in one or more referenced attributeGroups
     and/or explicitly, the intersection of the permissions is used -->

<!ELEMENT %complexContent; ((%annotation;)?, (%restriction;|%extension;))>
<!ATTLIST %complexContent;
          mixed (true|false) #IMPLIED
          id    ID           #IMPLIED
          %complexContentAttrs;>

<!-- restriction should use the branch defined above, not the simple
     one from part2; extension should use the full model  -->

<!ELEMENT %simpleContent; ((%annotation;)?, (%restriction;|%extension;))>
<!ATTLIST %simpleContent;
          id    ID           #IMPLIED
          %simpleContentAttrs;>

<!-- restriction should use the simple branch from part2, not the 
     one defined above; extension should have no particle  -->

<!ELEMENT %extension; ((%annotation;)?, (%particleAndAttrs;))>
<!ATTLIST %extension;
          base  %QName;      #REQUIRED
          id    ID           #IMPLIED
          %extensionAttrs;>

<!-- an element is declared by either:
 a name and a type (either nested or referenced via the type attribute)
 or a ref to an existing element declaration -->

<!ELEMENT %element; ((%annotation;)?, (%complexType;| %simpleType;)?,
                     (%unique; | %key; | %keyref;)*)>
<!-- simpleType or complexType only if no type|ref attribute -->
<!-- ref not allowed at top level -->
<!ATTLIST %element;