<?xml version="1.0" encoding="UTF-8"?> <schema targetNamespace="http://www.w3.org/1999/xlink" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2001/XMLSchema" version="3.2.0"> <annotation> <appinfo source="urn:opengis:specification:gml:schema-xlinks:v3.2.0">xlinks.xsd</appinfo> <documentation>see GML 7.2</documentation> </annotation> <!-- ============================================================== global declarations =============================================================== --> <!-- locator attribute --> <attribute name="href" type="anyURI"/> <!-- semantic attributes --> <attribute name="role" type="anyURI"/> <attribute name="arcrole" type="anyURI"/> <attribute name="title" type="string"/> <!-- behavior attributes --> <attribute name="show"> <annotation> <documentation> The 'show' attribute is used to communicate the desired presentation of the ending resource on traversal from the starting resource; it's value should be treated as follows: new - load ending resource in a new window, frame, pane, or other presentation context replace - load the resource in the same window, frame, pane, or other presentation context embed - load ending resource in place of the presentation of the starting resource other - behavior is unconstrained; examine other markup in the link for hints none - behavior is unconstrained </documentation> </annotation> <simpleType> <restriction base="string"> <enumeration value="new"/> <enumeration value="replace"/> <enumeration value="embed"/> <enumeration value="other"/> <enumeration value="none"/> </restriction> </simpleType> </attribute> <attribute name="actuate"> <annotation> <documentation> The 'actuate' attribute is used to communicate the desired timing of traversal from the starting resource to the ending resource; it's value should be treated as follows: onLoad - traverse to the ending resource immediately on loading the starting resource onRequest - traverse from the starting resource to the ending resource only on a post-loading event triggered for this purpose other - behavior is unconstrained; examine other markup in link for hints none - behavior is unconstrained </documentation> </annotation> <simpleType> <restriction base="string"> <enumeration value="onLoad"/> <enumeration value="onRequest"/> <enumeration value="other"/> <enumeration value="none"/> </restriction> </simpleType> </attribute> <!-- traversal attributes --> <attribute name="label" type="string"/> <attribute name="from" type="string"/> <attribute name="to" type="string"/> <!-- ============================================================== Attributes grouped by XLink type, as specified in the W3C Recommendation ============================================================== --> <attributeGroup name="simpleLink"> <attribute name="type" type="string" fixed="simple" form="qualified"/> <attribute ref="xlink:href" use="optional"/> <attribute ref="xlink:role" use="optional"/> <attribute ref="xlink:arcrole" use="optional"/> <attribute ref="xlink:title" use="optional"/> <attribute ref="xlink:show" use="optional"/> <attribute ref="xlink:actuate" use="optional"/> </attributeGroup> <attributeGroup name="extendedLink"> <attribute name="type" type="string" fixed="extended" form="qualified"/> <attribute ref="xlink:role" use="optional"/> <attribute ref="xlink:title" use="optional"/> </attributeGroup> <attributeGroup name="locatorLink"> <attribute name="type" type="string" fixed="locator" form="qualified"/> <attribute ref="xlink:href" use="required"/> <attribute ref="xlink:role" use="optional"/> <attribute ref="xlink:title" use="optional"/> <attribute ref="xlink:label" use="optional"/> </attributeGroup> <attributeGroup name="arcLink"> <attribute name="type" type="string" fixed="arc" form="qualified"/> <attribute ref="xlink:arcrole" use="optional"/> <attribute ref="xlink:title" use="optional"/> <attribute ref="xlink:show" use="optional"/> <attribute ref="xlink:actuate" use="optional"/> <attribute ref="xlink:from" use="optional"/> <attribute ref="xlink:to" use="optional"/> </attributeGroup> <attributeGroup name="resourceLink"> <attribute name="type" type="string" fixed="resource" form="qualified"/> <attribute ref="xlink:role" use="optional"/> <attribute ref="xlink:title" use="optional"/> <attribute ref="xlink:label" use="optional"/> </attributeGroup> <attributeGroup name="titleLink"> <attribute name="type" type="string" fixed="title" form="qualified"/> </attributeGroup> <attributeGroup name="emptyLink"> <attribute name="type" type="string" fixed="none" form="qualified"/> </attributeGroup> </schema>