[jbossseam-issues] [JBoss JIRA] Commented: (JBSEAM-1696) EmptyStackException in Transaction.java

[Matt Drees (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBSEAM-1696?page=comments#action_12369393 ] 
            
Matt Drees commented on JBSEAM-1696:
------------------------------------

I've also seen it happen when the very first Transaction.instance() call returns a transaction that is already Active (I think for some reason it wasn't ended on the previous request), so begin() is never called and the stack is never populated.  Later, at commit time, it fails with the same exception.

> EmptyStackException in Transaction.java
> ---------------------------------------
>
>                 Key: JBSEAM-1696
>                 URL: http://jira.jboss.com/jira/browse/JBSEAM-1696
>             Project: JBoss Seam
>          Issue Type: Bug
>    Affects Versions: 2.0.0.BETA1
>         Environment: Seam cvs 20070717.1711
>            Reporter: Matt Drees
>            Priority: Minor
>
> I occasionally get the following stacktrace.  I believe it happens when the SeamPhaseListener tries to begin a transaction, but an exception is thrown, so the stack is never pushed.  Later, when it tries to commitOrRollback, the following happens.
> 2007-07-18 15:29:55,229 ERROR () SeamPhaseListener: uncaught exception
> java.lang.IllegalStateException: Could not commit transaction
> 	at org.jboss.seam.jsf.SeamPhaseListener.commitOrRollback(SeamPhaseListener.java:589)
> 	at org.jboss.seam.jsf.SeamPhaseListener.handleTransactionsAfterPhase(SeamPhaseListener.java:325)
> 	at org.jboss.seam.jsf.SeamPhaseListener.afterServletPhase(SeamPhaseListener.java:226)
> 	at org.jboss.seam.jsf.SeamPhaseListener.afterPhase(SeamPhaseListener.java:184)
> 	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:280)
> 	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
> 	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
> 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:82)
> 	at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
> 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:68)
> 	at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
> 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:68)
> 	at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:61)
> 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:68)
> 	at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:44)
> 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:68)
> 	at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:127)
> 	at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:277)
> 	at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
> 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:68)
> 	at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
> 	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:68)
> 	at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:149)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
> 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
> 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
> 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
> 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
> 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
> 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
> 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
> 	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
> 	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
> 	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
> 	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
> 	at java.lang.Thread.run(Thread.java:595)
> Caused by: java.util.EmptyStackException
> 	at java.util.Stack.peek(Stack.java:79)
> 	at org.jboss.seam.transaction.Transaction.beforeCommit(Transaction.java:64)
> 	at org.jboss.seam.transaction.UTTransaction.commit(UTTransaction.java:44)
> 	at org.jboss.seam.jsf.SeamPhaseListener.commitOrRollback(SeamPhaseListener.java:579)
> You'd probably just need a simple "if (!synchronizations.isEmpty())" check before peek()ing or pop()ing.

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