<?xml version="1.0" encoding="UTF-8" ?>
<!--
	This is an XML Schema description of the format
	used by MediaWiki's exportSites.php and importSites.php
	scripts.
-->
<schema xmlns="http://www.w3.org/2001/XMLSchema"
		xmlns:mwsl="http://www.mediawiki.org/xml/sitelist-1.0/"
		targetNamespace="http://www.mediawiki.org/xml/sitelist-1.0/"
		elementFormDefault="qualified">

	<annotation>
		<documentation xml:lang="en">
			MediaWiki's export format for site definitions.
		</documentation>
	</annotation>

	<!-- Our root element -->
	<element name="sites" type="mwsl:MediaWikiSiteListType">
		<unique name="GlobalIDConstraint">
			<selector xpath="mwsl:Site" />
			<field xpath="mwsl:GlobalID" />
		</unique>
	</element>

	<simpleType name="EmptyTagType">
		<restriction base="string">
			<length value="0"/>
		</restriction>
	</simpleType>

	<complexType name="TypedIDType">
		<simpleContent>
			<extension base="NCName">
				<attribute name="type" use="required" type="NCName" />
			</extension>
		</simpleContent>
	</complexType>

	<complexType name="TypedURIType">
		<simpleContent>
			<extension base="anyURI">
				<attribute name="type" use="required" type="NCName" />
			</extension>
		</simpleContent>
	</complexType>

	<complexType name="MediaWikiSiteListType">
		<sequence>
			<element name="site" type="mwsl:SiteType"
					 minOccurs="0" maxOccurs="unbounded" />
		</sequence>
		<attribute name="version" type="string" use="optional" />
	</complexType>

	<complexType name="SiteType">
		<choice maxOccurs="unbounded">
			<element name="globalid" type="ID" minOccurs="1" maxOccurs="1" />
			<element name="localid" type="mwsl:TypedIDType" minOccurs="0" />
			<element name="group" type="NCName" minOccurs="0" maxOccurs="1" />
			<element name="source" type="NCName" minOccurs="0" maxOccurs="1" />
			<element name="forward" type="mwsl:EmptyTagType" minOccurs="0" maxOccurs="1" />
			<element name="path" type="mwsl:TypedURIType" minOccurs="0" />
		</choice>
		<attribute name="type" use="optional" type="NCName" />
	</complexType>

</schema>