Details
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Type:
Bug
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Status: Closed
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 2.0-Alpha2
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Fix Version/s: 2.0-Alpha3, 2.0.0
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Component/s: Framework
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Labels:None
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Environment:ICEfaces 2.0
Description
The following exception appears immediately on postback from a clean checkout and build of auction:
java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to java.util.Map
at com.sun.faces.application.view.StateManagementStrategyImpl.restoreView(StateManagementStrategyImpl.java:212)
at com.sun.faces.application.StateManagerImpl.restoreView(StateManagerImpl.java:177)
at com.sun.faces.application.view.ViewHandlingStrategy.restoreView(ViewHandlingStrategy.java:131)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.restoreView(FaceletViewHandlingStrategy.java:430)
at com.sun.faces.application.view.MultiViewHandler.restoreView(MultiViewHandler.java:143)
at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:199)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:110)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
It appears to be due to state management side effects in BridgeSetup.java.
Activity
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- Comments
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Moving the BridgeSetup code from a phase listener into a system event listener that listens for PreRenderViewEvent event seems to solve the issue since PreRenderViewEvent is fired after partial state saving is configured as state saving strategy.
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Mircea Toma
added a comment - Moving the BridgeSetup code from a phase listener into a system event listener that listens for PreRenderViewEvent event seems to solve the issue since PreRenderViewEvent is fired after partial state saving is configured as state saving strategy.
Changed BridgeSetup into a system event listener to avoid invoking StateManager.getViewState before state management strategy is chosen by JSF.
Show
Mircea Toma
added a comment - - edited Changed BridgeSetup into a system event listener to avoid invoking StateManager.getViewState before state management strategy is chosen by JSF.
It seems that state saved when BridgeSetup invokes StateManager.getViewState is of different type than the one expected when restore phase is executed, hence the ClassCastException.
The exact place where state saving type is configured is here:
com.sun.faces.application.view.FaceletViewHandlingStrategy.updateStateSavingType(FaceletViewHandlingStrategy.java:1,020)
at
com.sun.faces.application.view.FaceletViewHandlingStrategy.buildView(FaceletViewHandlingStrategy.java:699)
at
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:313)
FaceletViewHandlingStrategy.updateStateSavingType will set the the attribute "partialStateSaving" to true after BridgeSetup invokes StateManager.getViewState. Subsequent restore phase executions will expect the state save in the format corresponding to partial state saving strategy.