[jboss-jira] [JBoss JIRA] (AS7-5970) RichFaces Showcase portlet is unable to switch skins

[RH Bugzilla Integration (JIRA)]

    [ https://issues.jboss.org/browse/AS7-5970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12735021#comment-12735021 ] 

RH Bugzilla Integration commented on AS7-5970:
----------------------------------------------

Ken Finnigan <kfinniga at redhat.com> made a comment on [bug 877560|https://bugzilla.redhat.com/show_bug.cgi?id=877560]

Following exception is seen when changing skins for the second time immediately after the first:


Caused by: javax.faces.FacesException: Cannot remove the same component twice: pbG9dea276d_2dee9e_2d4150_2dad91_2d22255b5a57d2_j_id1:j_idt444
	at com.sun.faces.context.StateContext$AddRemoveListener.handleAddRemoveWithAutoPrune(StateContext.java:489) [jsf-impl-2.1.13-redhat-1.jar:2.1.13-redhat-1]
	at com.sun.faces.context.StateContext$AddRemoveListener.handleRemove(StateContext.java:371) [jsf-impl-2.1.13-redhat-1.jar:2.1.13-redhat-1]
	at com.sun.faces.context.StateContext$AddRemoveListener.processEvent(StateContext.java:334) [jsf-impl-2.1.13-redhat-1.jar:2.1.13-redhat-1]
	at javax.faces.event.SystemEvent.processListener(SystemEvent.java:106) [jboss-jsf-api_2.1_spec-2.0.7.Final-redhat-1.jar:2.0.7.Final-redhat-1]

Investigating this problem lead to determining that it was caused by the need for Portlet Bridge to retain the UIViewRoot from JSF between requests, and the list of ADDED/REMOVED components being retained between requests, making JSF believe it was removing a component for the second time when it fact it wasn't.

This has been raised as http://java.net/jira/browse/JAVASERVERFACES-2609 against the Mojarra JSF implementation.

There is also a tracker on AS7 jira to have the fix added when it's available: https://issues.jboss.org/browse/AS7-5970
                
> RichFaces Showcase portlet is unable to switch skins
> ----------------------------------------------------
>
>                 Key: AS7-5970
>                 URL: https://issues.jboss.org/browse/AS7-5970
>             Project: Application Server 7
>          Issue Type: Bug
>          Components: JSF
>    Affects Versions: 7.1.3.Final (EAP)
>            Reporter: Ken Finnigan
>            Assignee: Stan Silvert
>
> The following exception is thrown when the user changes skins for the second time immediately after changing the skin for the first time:
> {noformat}
> Caused by: javax.faces.FacesException: Cannot remove the same component twice: pbG9dea276d_2dee9e_2d4150_2dad91_2d22255b5a57d2_j_id1:j_idt444
> 	at com.sun.faces.context.StateContext$AddRemoveListener.handleAddRemoveWithAutoPrune(StateContext.java:489) [jsf-impl-2.1.13-redhat-1.jar:2.1.13-redhat-1]
> 	at com.sun.faces.context.StateContext$AddRemoveListener.handleRemove(StateContext.java:371) [jsf-impl-2.1.13-redhat-1.jar:2.1.13-redhat-1]
> 	at com.sun.faces.context.StateContext$AddRemoveListener.processEvent(StateContext.java:334) [jsf-impl-2.1.13-redhat-1.jar:2.1.13-redhat-1]
> 	at javax.faces.event.SystemEvent.processListener(SystemEvent.java:106) [jboss-jsf-api_2.1_spec-2.0.7.Final-redhat-1.jar:2.0.7.Final-redhat-1]
> {noformat}
> This error manifests due to the Portlet Bridge needing to retain the UIViewRoot from JSF between Portlet Requests, which causes the list of component tree actions, ie. adding and removing, to be retained making JSF think that it's trying to remove a component that was actually removed in a previous request.
> This has been raised as http://java.net/jira/browse/JAVASERVERFACES-2609, but wanted to raise this as a tracker so that when that fix is available it can be incorporated.

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