Improve DebugPhaseListener for UIData and SKIP_ITERATION
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Key: MYFACES-3033
URL: https://issues.apache.org/jira/browse/MYFACES-3033
Project: MyFaces Core
Issue Type: Improvement
Components: General
Affects Versions: 2.1.0
Reporter: Martin Kočí
<h:dataTable var="row" >
<h:column>
<h:outputText rendered="#{bean.isRendered(row)}"
There is new VisitHint.SKIP_ITERATION in JSF 2.1. If that hint is used UIData
iterate over children in "flat" manner and therefore no row is available -
bean.isRendered(row) obtains null as parameter and NPE can happen. One problem
in this situation is a component tree walk before RESTORE_VIEW from
DebugPhaseListener:
java.lang.NullPointerException
foo.bazz.bean.isRendered
...
at
org.apache.myfaces.view.facelets.el.TagValueExpression.getValue(TagValueExpression.java:85)
at javax.faces.component._DeltaStateHelper.eval(_DeltaStateHelper.java:260)
at javax.faces.component.UIComponentBase.isRendered
...
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:991)
at
org.apache.myfaces.view.facelets.tag.ui.DebugPhaseListener._doTreeVisit(DebugPhaseListener.java:310)
at
org.apache.myfaces.view.facelets.tag.ui.DebugPhaseListener.afterPhase(DebugPhaseListener.java:286)
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