plugins/org.eclipse.emf.ecore/schema/query_delegate.exsd

<?xml version='1.0' encoding='UTF-8'?>
<!-- Schema file written by PDE -->
<schema targetNamespace="org.eclipse.emf.ecore" xmlns="http://www.w3.org/2001/XMLSchema">
<annotation>
      <appInfo>
         <meta.schema plugin="org.eclipse.emf.ecore" id="query_delegate" name="Query Delegate Factory Registry"/>
      </appInfo>
      <documentation>
         This extension point is used to define a factory for query delegates whose type is identified by a URI. The global EMF query delegate factory registry, &lt;samp&gt;QueryDelegate.Factory.Registry.INSTANCE&lt;/samp&gt;, is used to record the registration.
      </documentation>
   </annotation>

   <element name="extension">
      <annotation>
         <appInfo>
            <meta.element />
         </appInfo>
      </annotation>
      <complexType>
         <sequence>
            <element ref="factory" minOccurs="1" maxOccurs="unbounded"/>
         </sequence>
         <attribute name="point" type="string" use="required">
            <annotation>
               <documentation>
                  A fully qualified identifier of the target extension point.
               </documentation>
            </annotation>
         </attribute>
         <attribute name="id" type="string">
            <annotation>
               <documentation>
                  An optional identifier of the extension instance.
               </documentation>
            </annotation>
         </attribute>
         <attribute name="name" type="string">
            <annotation>
               <documentation>
                  An optional name of the extension instance.
               </documentation>
            </annotation>
         </attribute>
      </complexType>
   </element>

   <element name="factory">
      <annotation>
         <appInfo>
            <meta.element labelAttribute="id"/>
         </appInfo>
      </annotation>
      <complexType>
         <attribute name="uri" type="string" use="required">
            <annotation>
               <documentation>
                  A URI identifying the type of query delegates that can be created by the factory.
               </documentation>
            </annotation>
         </attribute>
         <attribute name="class" type="string" use="required">
            <annotation>
               <documentation>
                  The fully qualified name of a Java class implementing &lt;samp&gt;org.eclipse.emf.ecore.util.QueryDelegate.Factory&lt;/samp&gt;.
               </documentation>
               <appInfo>
                  <meta.attribute kind="java" basedOn=":org.eclipse.emf.ecore.util.QueryDelegate.Factory"/>
               </appInfo>
            </annotation>
         </attribute>
      </complexType>
   </element>

   <annotation>
      <appInfo>
         <meta.section type="since"/>
      </appInfo>
      <documentation>
         2.7.0
      </documentation>
   </annotation>

   <annotation>
      <appInfo>
         <meta.section type="examples"/>
      </appInfo>
      <documentation>
         Following is an example of how a query delegate factory can be registered: 
&lt;pre&gt;
  &lt;extension point=&quot;org.eclipse.emf.ecore.query_delegate&quot; &gt;
    &lt;factory uri=&quot;http://www.eclipse.org/emf/2002/Ecore/OCL&quot; class=&quot;org.eclipse.ocl.ecore.delegate.OCLQueryDelegateFactory&quot;/&gt; 
  &lt;/extension&gt;
&lt;/pre&gt;
      </documentation>
   </annotation>

   <annotation>
      <appInfo>
         <meta.section type="apiInfo"/>
      </appInfo>
      <documentation>
         The value of the class attribute must represent a class that implements &lt;samp&gt;org.eclipse.emf.ecore.util.QueryDelegate.Factory&lt;/samp&gt; and has a no argument contructor.
&lt;p&gt;
A query delegate factory can be also registered from the source code with the &lt;samp&gt;QueryDelegate.Factory.Registry.INSTANCE&lt;/samp&gt; as follows:
&lt;/p&gt;
&lt;pre&gt;
  QueryDelegate.Factory.Registry.INSTANCE.put(&quot;http://www.eclipse.org/emf/2002/Ecore/OCL&quot;, new OCLQueryDelegateFactory());
&lt;/pre&gt;
      </documentation>
   </annotation>


   <annotation>
      <appInfo>
         <meta.section type="copyright"/>
      </appInfo>
      <documentation>
         Copyright (c) 2010 Kenn Hussey and others.&lt;br&gt;
All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v2.0 which accompanies this distribution, and is available at &lt;a 
href=&quot;http://www.eclipse.org/legal/epl-v20.html&quot;&gt;http://www.eclipse.org/legal/epl-v20.html&lt;/a&gt;
      </documentation>
   </annotation>

</schema>