<?xml version="1.0" encoding="UTF-8"?>
<!--
  
  RELAX NG Compact Schema for DAWG Variable Bindings result
  
  This schema is experimental and may change at any time.
  
  Dave Beckett 2004-11-26
  
  The RELAX NG Compact Syntax is described at
    http://www.oasis-open.org/committees/relax-ng/compact-20020607.html
  and RELAX NG at
    http://relaxng.org/
  
-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" targetNamespace="http://www.w3.org/sw/2001/DataAccess/result2#" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:res="http://www.w3.org/sw/2001/DataAccess/result2#">
  <xs:import namespace="http://www.w3.org/2001/XMLSchema-instance" schemaLocation="xsi.xsd"/>
  <xs:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="xml.xsd"/>
  <xs:attributeGroup name="xmllang">
    <xs:attribute ref="xml:lang" use="required"/>
  </xs:attributeGroup>
  <!-- xmlbase = attribute xml:base { text } -->
  <xs:element name="dawg-result">
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="res:variables"/>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="res:results"/>
      </xs:sequence>
      <xs:attribute ref="xml:lang"/>
      <xs:attribute ref="xsi:schemaLocation"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="variables">
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="res:var"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="results">
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="res:result"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <!-- Actually value is a whitespace-separated pair of namespace / XSD location -->
  <xs:attributeGroup name="schemaLoc">
    <xs:attribute ref="xsi:schemaLocation" use="required"/>
  </xs:attributeGroup>
  <xs:element name="result">
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="res:var"/>
      </xs:sequence>
      <xs:attribute ref="xml:lang"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="var">
    <xs:complexType>
      <xs:simpleContent>
        <xs:extension base="res:literal">
          <xs:attribute ref="xml:lang"/>
          <xs:attribute name="name" type="xs:string"/>
          <xs:attribute name="href" type="res:URI-reference"/>
          <xs:attribute name="datatype" type="res:URI-reference"/>
          <xs:attribute name="id" type="xs:string"/>
        </xs:extension>
      </xs:simpleContent>
    </xs:complexType>
  </xs:element>
  <xs:attributeGroup name="nameAttr">
    <xs:attribute name="name" use="required" type="xs:string"/>
  </xs:attributeGroup>
  <xs:attributeGroup name="hrefAttr">
    <xs:attribute name="href" use="required" type="res:URI-reference"/>
  </xs:attributeGroup>
  <xs:attributeGroup name="datatypeAttr">
    <xs:attribute name="datatype" use="required" type="res:URI-reference"/>
  </xs:attributeGroup>
  <xs:attributeGroup name="idAttr">
    <xs:attribute name="id" use="required" type="xs:string"/>
  </xs:attributeGroup>
  <xs:simpleType name="URI-reference">
    <xs:restriction base="xs:string"/>
  </xs:simpleType>
  <!-- xsd:anyURI -->
  <xs:simpleType name="literal">
    <xs:restriction base="xs:string"/>
  </xs:simpleType>
</xs:schema>
