附属書A. DTDによるRELAX Coreの記述

A.1 RELAX Core本体

<?xml version="1.0" encoding="utf-8"?>
<!--
DTD for RELAX Core (Ver 1.0)
$Id: relaxCore.dtd 1.18 2000/11/24 14:49:11 murata Exp $
-->

<!ENTITY % datatype "User_defined_datatypes_are_disallowed_at_least_now">
<!ENTITY % datatype-definitions SYSTEM "datatypes.dtd">
%datatype-definitions;

<!--*******************************************************-->
<!--                                                       -->  
<!--         The overall structure of RELAX modules.       -->
<!--                                                       -->  
<!--*******************************************************-->

<!ELEMENT interface ((%annotation;)?, (export | div)*)>

<!ENTITY % clause "(tag|attPool)">

<!ENTITY % rule "(elementRule|hedgeRule)">

<!ELEMENT module ((%annotation;)?, interface?, 
                       (%clause; | %rule; | div | include )*)>

<!ATTLIST module
                 moduleVersion    CDATA      #IMPLIED
                 relaxCoreVersion CDATA      #REQUIRED
                 targetNamespace  CDATA      #IMPLIED
                 xmlns            CDATA      #FIXED "http://www.xml.gr.jp/xmlns/relaxCore"
>
        
<!--*******************************************************-->
<!--                                                       -->  
<!--                          div                          -->
<!--                                                       -->  
<!--*******************************************************-->

<!ELEMENT div ((%annotation;)?,
               div*,
               (((%rule; |%clause; | include ),
                 (%rule; |%clause; | include | div)*)
                |
                (export, (export | div)*))?)>

<!-- 

(%rule; |%clause; | include | div)* is used when a div appears in a
module body, while (export | div)* is used when it appears in an
interface element.

 -->

        

<!--*******************************************************-->
<!--                                                       -->  
<!--                       Interface                       -->
<!--                                                       -->  
<!--*******************************************************-->

<!ELEMENT export ((%annotation;)?)>
<!ATTLIST export label NMTOKEN #REQUIRED>

<!--*******************************************************-->
<!--                                                       -->  
<!--                       Include                         -->
<!--                                                       -->  
<!--*******************************************************-->

<!ELEMENT include ((%annotation;)?)>
<!ATTLIST include moduleLocation CDATA #REQUIRED>


<!--*******************************************************-->
<!--                                                       -->  
<!--                    Hedge Models                       -->
<!--                                                       -->  
<!--*******************************************************-->

<!-- The parameter entity "particle" is used to describe element hedge
models.  It is also used as subordinates of <sequence>, <choice>,
and <mixed>. -->

<!ENTITY % particle "(ref | hedgeRef | choice | sequence | element 
			  | none | empty)">

<!ENTITY % hedgeModel 
	"(%particle;  | mixed)">

<!-- The parameter entity "repeatable" is used to specify the "occurs"
 attribute, which is shared by several elements.  Permissible values
 are either "?", "+", or "*".  -->

<!ENTITY % repeatable '
                 occurs       CDATA      #IMPLIED
'>


<!ELEMENT hedgeRef EMPTY >
<!ATTLIST hedgeRef 
                 label      NMTOKEN      #REQUIRED
                 %repeatable;
>

<!ELEMENT ref EMPTY >
<!ATTLIST ref 
                 label      NMTOKEN      #IMPLIED
                 role       NMTOKEN      #IMPLIED
                 %repeatable;
>

<!ELEMENT empty EMPTY >

<!ELEMENT choice (%particle;)* >
<!ATTLIST choice
                 %repeatable;
>

<!ELEMENT sequence (%particle;)* >
<!ATTLIST sequence
                 %repeatable;
>

<!ELEMENT none EMPTY>

<!ELEMENT mixed (%particle;) >

<!ELEMENT element ((%annotation;)?, (%facet;)*)>
<!ATTLIST element 
                 name     NMTOKEN #REQUIRED
                 type     NMTOKEN #REQUIRED
                 %repeatable;
>


<!--*******************************************************-->
<!--                                                       -->  
<!--                       Rules                           -->
<!--                                                       -->  
<!--*******************************************************-->

<!ELEMENT elementRule ((%annotation;)?, tag?,
                       ((%hedgeModel;) | (%facet;)*))>

<!ATTLIST elementRule 
		role        NMTOKEN #IMPLIED
		label       NMTOKEN #IMPLIED
                type        NMTOKEN #IMPLIED
>

<!ELEMENT hedgeRule  ((%annotation;)?, %particle;) >
<!ATTLIST hedgeRule
                label       NMTOKEN #REQUIRED
>


<!--*******************************************************-->
<!--                                                       -->  
<!--                        Clauses                        -->
<!--                                                       -->  
<!--*******************************************************-->

<!ENTITY % clauseBody "((%annotation;)?, ref*, attribute*)">

<!ELEMENT tag  (%clauseBody;)>
<!ATTLIST tag
                 role     NMTOKEN      #IMPLIED
                 name     NMTOKEN      #IMPLIED
>

<!ELEMENT attPool (%clauseBody;)>
<!ATTLIST attPool
                 role  NMTOKEN      #REQUIRED
>

<!ELEMENT attribute ((%annotation;)?, (%facet;)*) >
<!ATTLIST attribute
                 name      NMTOKEN      #REQUIRED
                 required   (true)      #IMPLIED
                 type      NMTOKEN      #IMPLIED
>

A.2 データ型

datatypes.dtdとして，XML Schemaのデータ型を定義しているDTD(XML Schema Part 2の付録B)をそのまま使用する。