JSF 1.2 custom component does not render/encode children - jsf

Question

I have two custom components:
CustomUIComponent extends UIComponentBase
CustomChildUIComponent extends UIComponentBase
In CustomUIComponent I implement encodeBegin, encodeChildren and encodeEnd - in encodeChildren I set some custom attribute to be forwarded to the child component.
In CustomChildUIComponent I implement only encodeBegin.
In addition to these classes I added the components in the faces-config.xml:
<component>
<component-type>test.JsfMessage</component-type>
<component-class>test.CustomUIComponent</component-class>
</component>
<component>
<component-type>test.JsfChildMessage</component-type>
<component-class>test.CustomChildUIComponent</component-class>
</component>
And I have the custom taglib.xml configured in the web.xml and contains:
<tag>
<tag-name>customMessage</tag-name>
<component>
<component-type>test.JsfMessage</component-type>
</component>
</tag>
<tag>
<tag-name>customChildMessage</tag-name>
<component>
<component-type>test.JsfChildMessage</component-type>
</component>
</tag>
Finally in my Facelets page I am trying to execute:
<myns:customMessage message="Hello World!!!" var="mytestvar">
<myns:customChildMessage partnermsg="#{mytestvar}" />
</myns:customMessage>
The result is that the parent is rendered but the child component does not.
Am I doing something wrong?
I tried checking the super.encodeChildren but it checks:
Renderer renderer = getRenderer(context);
if(renderer != null) ...
I am not using a renderer class, but as I understand it is not a must.

Answer 1

The encodeChildren() method of your custom component will only be called if the getRendersChildren() method of the very same custom component returns true. This is specified in the javadoc:
This method will only be called if the rendersChildren property is true.
So make sure that you've overridden that accordingly, it namely defaults to false:
#Override
public boolean getRendersChildren() {
return true;
}