encodeAll() not called on a composite component when rendered attribute is wrapped

问题

When I do:

<h:form>
    <ui:repeat ...>
        <ui:fragment rendered="#{xyz.type eq 1}"
           <h:inputText value="#{xyz}"/>
        </ui:frament>

        <ui:fragment rendered="#{xyz.type eq 2}"
           <my:component value="#{xyz}"/>
        </ui:frament>
    <ui:repeat />
</h:form>

encodeAll() doesen't get called on my:component and subsequently the existing values are not shown.

If I do the following though

    <ui:repeat ...>
        <ui:fragment rendered="#{xyz.type eq 1}"
           <h:inputText value="#{xyz}"/>
        </ui:frament>

        <ui:fragment rendered="#{xyz.type eq 2}"
           <h:form>
               <my:component value="#{xyz}"/>
           </h:form>
        </ui:frament>
    <ui:repeat />

The latter example is useless of course, as I want to have dynamic inputs. Existing (default) components as datepicker, inputtext, ... function ok, it is only my component that doesnt show existing values (encodeAll not called).

I also tried h:datatable component instead of ui:repeat (not sure why though), with same results.

INFO: Initializing Mojarra 2.1.6 (SNAPSHOT 20111206) for context '/webclient'
INFO: Running on PrimeFaces 3.5
INFO: Running on PrimeFaces Extensions 0.6.3

回答1:

I can't reproduce your problem based on the given code, but I can reproduce it when I wrap it in a PrimeFaces component. E.g. when <ui:fragment> is replaced by <p:panel> (without rendered!). This is caused by the PrimeFaces CoreRenderer not calling UIComponent#encodeAll() in renderChildren() method, but encodeBegin(), encodeChildren() and encodeEnd() individually.

If you perform the job in encodeBegin() instead of encodeAll(), then it should work. I have updated my composite component article accordingly.

来源：https://stackoverflow.com/questions/15613725/encodeall-not-called-on-a-composite-component-when-rendered-attribute-is-wrapp

标签

java

jsf

jsf-2

composite-component