<?xml version="1.0" encoding="utf-8"?>
<xs:schema id="DataServiceMapSchema" targetNamespace="urn:schemas-microsoft-com:xml-dataservicemap" elementFormDefault="qualified" xmlns="urn:schemas-microsoft-com:xml-dataservicemap" xmlns:mstns="urn:schemas-microsoft-com:xml-dataservicemap" xmlns:xs="http://www.w3.org/2001/XMLSchema">

  <xs:annotation>
    <xs:documentation xml:lang="en">
        The schema of Data Service Reference Map files
        Copyright (c) Microsoft Corp. All rights reserved.
    </xs:documentation>
  </xs:annotation>

  <xs:element name="ReferenceGroup">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="MetadataSources" maxOccurs="1" minOccurs="0">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="MetadataSource" maxOccurs="unbounded" minOccurs="0" type="MetadataSource">
              </xs:element>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
        <xs:element name="Metadata" maxOccurs="1" minOccurs="1">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="MetadataFile" minOccurs="0" maxOccurs="unbounded" type="MetadataFile" />
            </xs:sequence>
          </xs:complexType>
          <xs:key name="MetadataFileNameKey">
            <xs:selector xpath=".//mstns:MetadataFile" />
            <xs:field xpath="@FileName" />
          </xs:key>
          <xs:key name="MetadataIDKey">
            <xs:selector xpath=".//mstns:MetadataFile" />
            <xs:field xpath="@ID" />
          </xs:key>
        </xs:element>
        <xs:element name="Extensions" minOccurs="0" maxOccurs="1">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="ExtensionFile" minOccurs="0" maxOccurs="unbounded" type="ExtensionFile" />
            </xs:sequence>
          </xs:complexType>
          <xs:key name="ReferenceGroupExtensionNameKey">
            <xs:selector xpath=".//mstns:ExtensionFile" />
            <xs:field xpath="@Name" />
          </xs:key>
        </xs:element>
        <xs:element name="Parameters" minOccurs="0" maxOccurs="1">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="Parameter" minOccurs="0" maxOccurs="unbounded" type="Parameter" />
            </xs:sequence>
          </xs:complexType>
          <xs:key name="ReferenceGroupParameterNameKey">
            <xs:selector xpath=".//mstns:Parameter" />
            <xs:field xpath="@Name" />
          </xs:key>
        </xs:element>
      </xs:sequence>
      <xs:attribute name="ID" type="guid" use="required" />
    </xs:complexType>
    <xs:key name="ReferenceGroupSourceIdKey">
      <xs:selector xpath=".//mstns:MetadataSource" />
      <xs:field xpath="@SourceId" />
    </xs:key>
    <xs:keyref name="MetadataFileSourceIdRef" refer="ReferenceGroupSourceIdKey">
      <xs:selector xpath=".//mstns:MetadataFile" />
      <xs:field xpath="@SourceId" />
    </xs:keyref>
  </xs:element>

  <xs:simpleType name="MetadataType">
    <xs:restriction base="nonEmptyString">
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="ProtocolType">
    <xs:restriction base="nonEmptyString">
        <!--
      <xs:enumeration value="http" />
      <xs:enumeration value="mex" />
      <xs:enumeration value="file" />
         -->
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="guid">
    <xs:restriction base="xs:string">
      <xs:pattern value="[\da-fA-F]{8}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{12}" />
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="FileName">
    <xs:restriction base="nonEmptyString">
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="nonEmptyString">
    <xs:restriction base="xs:string">
      <xs:minLength value="1" />
    </xs:restriction>
  </xs:simpleType>

  <xs:complexType name="MetadataSource">
    <xs:sequence />
    <xs:attribute name="SourceId" type="xs:positiveInteger" use="required" />
    <xs:attribute name="Address" type="nonEmptyString" use="required" />
    <xs:attribute name="Protocol" type="ProtocolType" use="required" />
  </xs:complexType>

  <xs:complexType name="MetadataFile">
    <xs:sequence>
    </xs:sequence>
    <xs:attribute name="MetadataType" type="MetadataType" use="required" />
    <xs:attribute name="FileName" type="FileName" use="required" />
	<!--
    <xs:attribute name="TargetNamespace" type="xs:anyURI" />
	-->
    <xs:attribute name="SourceUrl" type="xs:string" />
    <xs:attribute name="ID" type="guid" use="required" />
    <xs:attribute name="SourceId" use="optional" type="xs:positiveInteger">
    </xs:attribute>
    <xs:attribute name="Ignore" type="xs:boolean" default="false" use="optional" />
    <xs:attribute name="IsMergeResult" type="xs:boolean" use="optional" default="false" />
  </xs:complexType>

  <xs:complexType name="ExtensionFile">
    <xs:sequence />
    <xs:attribute name="Name" type="nonEmptyString" use="required" />
    <xs:attribute name="FileName" type="FileName" use="required" />
  </xs:complexType>

  <xs:complexType name="Parameter">
    <xs:sequence />
    <xs:attribute name="Name" type="nonEmptyString" use="required" />
    <xs:attribute name="Value" type="xs:string" use="required" />
  </xs:complexType>
</xs:schema>