[richfaces-issues] [JBoss JIRA] (RF-12230) [CDK] c:foreach in a cast component will result on a List<Object> instead of List<UIComponent>

[Lukáš Fryč (JIRA)]

     [ https://issues.jboss.org/browse/RF-12230?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lukáš Fryč resolved RF-12230.
-----------------------------

        Labels: cdk generated richfaces  (was: cdk generated richfaces xp)
      Assignee: Lukáš Fryč
    Resolution: Done

    
> [CDK] c:foreach in a cast component will result on a List<Object> instead of List<UIComponent>
> ----------------------------------------------------------------------------------------------
>
>                 Key: RF-12230
>                 URL: https://issues.jboss.org/browse/RF-12230
>             Project: RichFaces
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: cdk
>    Affects Versions: 4.2.1.Final
>         Environment: All
>            Reporter: Paul Dijou
>            Assignee: Lukáš Fryč
>              Labels: cdk, generated, richfaces
>             Fix For: 4.3.0.Milestone1
>
>
> Look at the following code :
> {code:xml}
> <cdk:object type="javax.faces.component.UIComponent" name="prependFacet"
>     value="#{component.getFacet('prepend')}"/>
> <c:choose>
>     <c:when test="#{prependFacet.family eq 'javax.faces.Panel'}">
>         <c:forEach var="child" items="#{component.getFacet('prepend').getChildren()}">
> {code}
> I'm using a {{<cdk:object>}} to assign my facet to a var. Then I make some test and finally, I want to iterate over the children of my facet. This will result on this Java code on the renderer :
> {code:java}
>     UIComponent prependFacet  =  component.getFacet("prepend"); 
>     if (isEqual(prependFacet.getFamily(),"javax.faces.Panel")) {
>         for (UIComponent child: component.getFacet("prepend").getChildren()) {
> {code}
> That's perfect! But now, since I have a var for my facet, why not using it in the {{<c:forEach>}}? Seems natural. So I change my code to :
> {code:xml}
> <cdk:object type="javax.faces.component.UIComponent" name="prependFacet"
>     value="#{component.getFacet('prepend')}"/>
> <c:choose>
>     <c:when test="#{prependFacet.family eq 'javax.faces.Panel'}">
>         <c:forEach var="child" items="#{prependFacet.getChildren()}">
> {code}
> Only the last line is different from the previous one. What does the generated Java code looks like? That:
> {code:java}
>     UIComponent prependFacet  =  component.getFacet("prepend"); 
>     if (isEqual(prependFacet.getFamily(),"javax.faces.Panel")) {
>         for (Object child: prependFacet.getChildren()) {
> {code}
> Whaaaaat?! Why is it a "Object" in the "for" loop and not a "UIComponent" anymore? Of course, the component is now broken since I'm calling {{UIComponent}} methods inside the loop.

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