3 Replies Latest reply on Apr 28, 2008 9:40 AM by laliluna.usenet.laliluna.de

precedence problem Hibernate Session versus Seam Session

laliluna.usenet.laliluna.de Apr 25, 2008 12:22 AM

Hello,

I found a precedence problem and I am not sure is this turns out to be a general problem in a lot of core components (or me not understanding something).

I try to inject the Hibernate session in my components using session as name.
@In
private Session session

With the following components.xml this leads to a classcastexception when the session is injected in the HibernateTransaction. Seam tries to inject a HTTP Session.

components.xml

<persistence:hibernate-session-factory name="hibernateSessionFactory"/>
<persistence:managed-hibernate-session name="session"                       
 auto-create="true"        
session-factory="#{hibernateSessionFactory}"/>
<transaction:hibernate-transaction session="#{session}"/>

In my opinion this is an error as the component is properly created.

A workaround is possible. When injecting the session into the transaction the wrong component (Seam Session) is used.

I created a factory for session.

  <factory name="session"
           scope="STATELESS"
           auto-create="true"
           value="#{xsession}"/>
<persistence:managed-hibernate-session name="xsession"
                                         auto-create="true"
session-factory="#{hibernateSessionFactory}"/>
 <transaction:hibernate-transaction session="#{xsession}" />

I tried to play with the precedence but this did not help as well.

Best Regards / Viele Grüße

Sebastian Hennebrueder

-----
http://www.laliluna.de

1. Re: precedence problem Hibernate Session versus Seam Session

pmuir Apr 25, 2008 3:10 PM (in response to laliluna.usenet.laliluna.de)

Post the exception and stack trace
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2. Re: precedence problem Hibernate Session versus Seam Session

laliluna.usenet.laliluna.de Apr 25, 2008 3:32 PM (in response to laliluna.usenet.laliluna.de)

15:31:24,466 ERROR SeamPhaseListener:120 - uncaught exception
java.lang.IllegalStateException: Could not start transaction
     at org.jboss.seam.jsf.SeamPhaseListener.begin(SeamPhaseListener.java:581)
     at org.jboss.seam.jsf.SeamPhaseListener.handleTransactionsBeforePhase(SeamPhaseListener.java:312)
     at org.jboss.seam.jsf.SeamPhaseListener.beforeServletPhase(SeamPhaseListener.java:140)
     at org.jboss.seam.jsf.SeamPhaseListener.beforePhase(SeamPhaseListener.java:114)
     at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:222)
     at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
     at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
     at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassCastException: org.apache.catalina.session.StandardSessionFacade cannot be cast to org.hibernate.Session
     at org.jboss.seam.transaction.HibernateTransaction.initSession(HibernateTransaction.java:69)
     at org.jboss.seam.transaction.HibernateTransaction.begin(HibernateTransaction.java:80)
     at org.jboss.seam.jsf.SeamPhaseListener.begin(SeamPhaseListener.java:576)
     ... 32 more
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3. Re: precedence problem Hibernate Session versus Seam Session

laliluna.usenet.laliluna.de Apr 28, 2008 9:40 AM (in response to laliluna.usenet.laliluna.de)

This was a bug in Seam.

Copied from Jira
Fix Version/s: 2.0.2.CR2
2.1.0.BETA1

Thank you for the fix.
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