The RichFaces CDK extension elements have namespache http://richfaces.org/cdk/extensions and its default prefix is 'cdk:'. These extensions defined in the appropriate XML schema ( not included with ALPHA1 release ). In this article, all tags are given as example.

Top level extension:

        <cdk:function>
            <description>Long, long description</description>
            <display-name>test string</display-name>
            <cdk:function-class>org.richfaces.cdk.test.functions.TestFunctions</cdk:function-class>
            <cdk:function-name>testString</cdk:function-name>
            <cdk:function-signature>java.lang.String testString(java.util.List&lt;java.lang.String&gt;,char)</cdk:function-signature>
        </cdk:function>
        <cdk:faces-event>
        </cdk:faces-event>
        <cdk:prefix>org.richfaces</cdk:prefix>
        <cdk:taglib>
        </cdk:taglib>

Application extension:

Component extension:

<faces-config xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xi="http://www.w3.org/2001/XInclude"
    xmlns:cdk="http://richfaces.org/cdk/extensions"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd"
    version="2.0">
..............................
    <component>
   .... standard component elements ....
    <component-extension>
        <cdk:base-class>foo.Bar</cdk:base-class>
        <cdk:generate>true</cdk:generate>        <cdk:component-family>foo.Family</cdk:component-family>
        <cdk:renderer-type>org.richfaces.cdk.TestPanelRenderer</cdk:renderer-type>
        <cdk:tag>
             <cdk:tag-name>testPanel</cdk:tag-name>
             <cdk:handler-class>...</cdk:handler-class>
             <cdk:base-class>...</cdk:base-class>
             <cdk:generate>true</cdk:generate>
             <cdk:tag-type>Facelets</cdk:tag-type><!-- Jsp -->
        </cdk:tag>
    </component-extension>
 </component>
</faces-config>
 

<cdk:generate> tells CDK to generate concrete component class ( base UI... or renderer-specific ).

<cdk:base-class> defines superclass of the generated component class ( which name is taken form standard <component-class> tag )

<cdk:component-family> defines component family used in the generated class.

Attribute extensions:

<component>
    <property>
        <description><![CDATA[test2 property]]></description>
        <display-name>test2 event property</display-name>
        <icon>ontest2.png</icon>
        <property-name>ontest2</property-name>
        <property-class>int</property-class>
        <default-value>3</default-value>
        <suggested-value>15</suggested-value>
        <property-extension>
            <cdk:literal>true</cdk:literal>
            <cdk:generate>true</cdk:generate>
            <cdk:hidden>true</cdk:hidden>
            <cdk:required>true</cdk:required>
            <cdk:pass-through>true</cdk:pass-through>
            <cdk:event-name>ontest2</cdk:event-name>
            <cdk:event-name default="true">action</cdk:event-name>
            <cdk:signature>
               <cdk:return-type>void</cdk:return-type>
               <cdk:param>boolean</cdk:param>
               <cdk:param>java.lang.String</cdk:param>
            </cdk:signature>
            <cdk:aliasFor>foo</cdk:aliasFor>
        </property-extension>
    </property>
</component>

<aliasFor>  defines this property as alias for another. CDK will generate getters/setters for that property which delegate calls to the original attribute methods.

<literal> if true, no EL-expressions are allowed for this attribute.

<event-name> defines behavior event name for this attribute.

<hidden> attributes are not presented in the tag.

<signature> defines Java method signature for attributes that holds MethodExpression objects.

<generate>  forces CDK to generate attribute getter/setter methods.

Facet extensions:

          <facet>
               <description>Header facet</description>
               <facet-name>header</facet-name>
               <facet-extension>
                  <cdk:generate>true</cdk:generate>
               </facet-extension>
          </facet>

<generate>  forces CDK to generate getter/setter methods for facet. In the example above these methods will be generated:

public UIComponent getHeader(){
          return getFacets().get("header");
}
public void setHeader(UIComponent header){
          getFacets().put("header",header);
}

RenderKit extension:

Renderer extension:

       <renderer>
           ..........................
            <renderer-extension>
                <cdk:renders-children>true</cdk:renders-children>
          </renderer-extension>
       </renderer>

Converter:

Behavior