<?xml version="1.0" encoding="UTF-8"?>
<!--
 | (C) Copyright IBM Corporation 2005 - 2006. All Rights Reserved.
 *-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" xmlns:ditaarch="http://dita.oasis-open.org/architecture/2005/">
  <xs:import namespace="http://dita.oasis-open.org/architecture/2005/" schemaLocation="../../../schema/ditaarch.xsd"/>
  <xs:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="../../../schema/xml.xsd"/>

   <xs:group name="api-d-xref">
     <xs:choice>
       <xs:element ref="apipackage"/>
       <xs:element ref="apiclassifier"/>
       <xs:element ref="apioperation"/>
       <xs:element ref="apivalue"/>
     </xs:choice>
   </xs:group>
  
  
  <xs:element name="apipackage" >
    <xs:complexType mixed="true">
      <xs:attributeGroup ref="apipackage.attlist"/>
    </xs:complexType>
  </xs:element>
  <xs:attributeGroup name="apipackage.attlist">
    <xs:attribute name="href"/>
    <xs:attribute name="keyref"/>
    <xs:attribute name="type"/>
    <xs:attributeGroup ref="univ-atts"/>
    <xs:attribute name="format"/>
    <xs:attribute name="scope">
      <xs:simpleType>
        <xs:restriction base="xs:token">
          <xs:enumeration value="local"/>
          <xs:enumeration value="peer"/>
          <xs:enumeration value="external"/>
          <xs:enumeration value="-dita-use-conref-target"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="outputclass"/>
    <xs:attributeGroup ref="global-atts"/>
    <xs:attribute name="class" default="+ topic/xref pr-d/xref api-d/apipackage "/>
  </xs:attributeGroup>
  <xs:element name="apiclassifier" >
    <xs:complexType mixed="true">
      <xs:attributeGroup ref="apiclassifier.attlist"/>
    </xs:complexType>
  </xs:element>
  <xs:attributeGroup name="apiclassifier.attlist">
    <xs:attribute name="href"/>
    <xs:attribute name="keyref"/>
    <xs:attribute name="type"/>
    <xs:attributeGroup ref="univ-atts"/>
    <xs:attribute name="format"/>
    <xs:attribute name="scope">
      <xs:simpleType>
        <xs:restriction base="xs:token">
          <xs:enumeration value="local"/>
          <xs:enumeration value="peer"/>
          <xs:enumeration value="external"/>
          <xs:enumeration value="-dita-use-conref-target"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="outputclass"/>
    <xs:attributeGroup ref="global-atts"/>
    <xs:attribute name="class" default="+ topic/xref pr-d/xref api-d/apiclassifier "/>
  </xs:attributeGroup>
  <xs:element name="apioperation" >
    <xs:complexType mixed="true">
      <xs:attributeGroup ref="apioperation.attlist"/>
    </xs:complexType>
  </xs:element>
  <xs:attributeGroup name="apioperation.attlist">
    <xs:attribute name="href"/>
    <xs:attribute name="keyref"/>
    <xs:attribute name="type"/>
    <xs:attributeGroup ref="univ-atts"/>
    <xs:attribute name="format"/>
    <xs:attribute name="scope">
      <xs:simpleType>
        <xs:restriction base="xs:token">
          <xs:enumeration value="local"/>
          <xs:enumeration value="peer"/>
          <xs:enumeration value="external"/>
          <xs:enumeration value="-dita-use-conref-target"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="outputclass"/>
    <xs:attributeGroup ref="global-atts"/>
    <xs:attribute name="class" default="+ topic/xref pr-d/xref api-d/apioperation "/>
  </xs:attributeGroup>
  <xs:element name="apivalue" >
    <xs:complexType mixed="true">
      <xs:attributeGroup ref="apivalue.attlist"/>
    </xs:complexType>
  </xs:element>
  <xs:attributeGroup name="apivalue.attlist">
    <xs:attribute name="href"/>
    <xs:attribute name="keyref"/>
    <xs:attribute name="type"/>
    <xs:attributeGroup ref="univ-atts"/>
    <xs:attribute name="format"/>
    <xs:attribute name="scope">
      <xs:simpleType>
        <xs:restriction base="xs:token">
          <xs:enumeration value="local"/>
          <xs:enumeration value="peer"/>
          <xs:enumeration value="external"/>
          <xs:enumeration value="-dita-use-conref-target"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="outputclass"/>
    <xs:attributeGroup ref="global-atts"/>
    <xs:attribute name="class" default="+ topic/xref pr-d/xref api-d/apivalue "/>
  </xs:attributeGroup>
</xs:schema>
