[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)
jira-events at lists.jboss.org
Fri May 25 12:10:18 EDT 2012
[ https://issues.jboss.org/browse/RF-12230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12696051#comment-12696051 ]
Lukáš Fryč commented on RF-12230:
---------------------------------
This is also the problem why following warning is shown during build:
{code}
[INFO] --- maven-cdk-plugin:4.3.0-SNAPSHOT:generate (cdk-generate-sources) @ componentName-ui ---
[WARNING] No type found in context for identifier 'prependFacet', handling as generic Object
{code}
The variable defined by {{<cdk:object />}} wasn't pushed to context of variables.
> [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
> Labels: cdk, generated, richfaces, xp
> 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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