[jbossseam-issues] [JBoss JIRA] Commented: (JBSEAM-1822) BaseSeamTest does not properly emulateJsfLifecycle does not handle phase listeners per the jsf 1.2 spec.

[Shane Bryzak (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBSEAM-1822?page=comments#action_12375815 ] 
            
Shane Bryzak commented on JBSEAM-1822:
--------------------------------------

Chris - I've made the change you suggested to the run() method, rolling back the transaction if there is one present.  This isn't really my area of expertise so could you please test this change and let me know if it fixes the problem.  Sam - could you please provide a test case that reproduces the IllegalStateException.  I'll leave this issue open for another day or so to confirm that the issue is indeed fixed.

> BaseSeamTest does not properly emulateJsfLifecycle does not handle phase listeners per the jsf 1.2 spec.
> --------------------------------------------------------------------------------------------------------
>
>                 Key: JBSEAM-1822
>                 URL: http://jira.jboss.com/jira/browse/JBSEAM-1822
>             Project: JBoss Seam
>          Issue Type: Bug
>          Components: Test Harness
>    Affects Versions: 2.0.0.BETA1
>            Reporter: Chris Rudd
>         Assigned To: Shane Bryzak
>             Fix For: 2.0.0.CR1
>
>
> Under the 1.2 JSF spec, all phase listeners are called with the after phase events reguarless of if an exception was thrown during the phase processing.
> The resulting issue is that when Init.isTransactionMangementEnabled is true, and and an exception (or an AssertionError) is thrown from within the phase method, the SeamPhase listner does not get a chance to handle the condition and rollback the transaction. This leaves the transaction open, and all further tests run for that class are now "tainted" as there is a transaction running that will never be completed.
> Wrapping code in the phase methods (restoreViewPhase,applyRequestValuesPhase,processValidationsPhase,updateModelValuesPhase,invokeApplicationsPhase, renderResponsePhase) like this will resolve the issue :
>       private void renderResponsePhase() throws Exception
>       {
>          phases.beforePhase(new PhaseEvent(facesContext, PhaseId.RENDER_RESPONSE,
>                   MockLifecycle.INSTANCE));
> +        try
> +        {         
>           updateConversationId();
>          
>           renderResponseBegun = true;
>   
>           renderResponse();
>   
>           renderResponseComplete = true;
>   
>           facesContext.getApplication().getStateManager().saveView(facesContext);
>   
>           updateConversationId();
>  +      }
>  +      finally
>  +      {
>          phases.afterPhase(new PhaseEvent(facesContext, PhaseId.RENDER_RESPONSE,
>                   MockLifecycle.INSTANCE));
> +       }
>       }
> it may be cleaner to refactor the phase methods into PhaseExection classes. (remove firing of phase events from the phase methods )
> 	public class PhaseExecution {
> 		private PhaseId phaseId;
> 		
> 		public PhaseExecution(PhaseId phaseId)
> 		{
> 			this.phaseId = phaseId;
> 		}
> 		
> 		protected abstract void execute() throws Exception
> 		
> 		public void run() throws Exception {
> 			fireBefore();
> 			try
> 			{
> 				execute();
> 			}
> 			finally
> 			{
> 				afterPhase();
> 			}
> 		}
> 		
> 		protected void fireBefore()
> 		{
> 			 phases.beforePhase(new PhaseEvent(facesContext, phaseId,
> 	                  MockLifecycle.INSTANCE));
> 		}
> 		protected void fireAfter()
> 		{
> 			 phases.afterPhase(new PhaseEvent(facesContext, phaseId,
> 	                  MockLifecycle.INSTANCE));
> 		}
> 	}
> 	
> 	final private PhaseExcecution RESTORE_VIEW_PHASE= new PhaseExecution(PhaseId.RESTORE_VIEW) {
> 		protected void execute() throws Exception {
> 			restoreViewPhase();
> 		}
> 	};
> 	
> 	final private PhaseExcecution RENDER_RESPONSE_PHASE= new PhaseExecution(PhaseId.RENDER_RESPONSE) {
> 		protected void execute() throws Exception {
> 			renderResponsePhase();
> 		}
> 	};
> 	...
> 	
>     /**
>      * @return true if a response was rendered
>      */
>     private boolean emulateJsfLifecycle() throws Exception
>     {
>        RESTORE_VIEW_PHASE.run();
>        if ( !isGetRequest() && !skipToRender() )
>        {
>           APPLY_REQUEST_VALUES_PHASE.run();
>           if (!skipToRender())
>           {
>              PROCESS_VALIDATIONS_PHASE.run();
>              if ( !skipToRender() )
>              {
>                 UPDATE_MODEL_VALUES_PHASE.run();
>                 if ( !skipToRender() )
>                 {
>                    INVOKE_APPLICATION_PHASE.run();
>                 }
>              }
>           }
>        }
>        
>        if ( skipRender() )
>        {
>           // we really should look at redirect parameters here!
>           return false;
>        }
>        else
>        {
>           RENDER_RESPONSE_PHASE.run();
>           return true;
>        }
>     }

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