[jboss-user] [JBoss Seam] - Exceptions handling - strange behaviour of SeamFilter

[przemjaskier]

After adding SeamFilter to my web.xml I'm getting error shown on stacktrace below. Problem appears in case of any application exception that appears after ajax4jsf's call that I'm performing with <a4j:commandLink/>.
 



  | Jun 10, 2007 5:54:03 PM org.apache.catalina.core.StandardWrapperValve invoke
  | SEVERE: Servlet.service() for servlet Faces Servlet threw exception
  | java.lang.IllegalArgumentException: Stack must not be null
  | 	at org.jboss.seam.core.ConversationEntry.<init>(ConversationEntry.java:40)
  | 	at org.jboss.seam.core.ConversationEntries.createConversationEntry(ConversationEntries.java:50)
  | 	at org.jboss.seam.core.Manager.createConversationEntry(Manager.java:685)
  | 	at org.jboss.seam.core.Manager.beforeRedirect(Manager.java:834)
  | 	at org.jboss.seam.core.Manager.beforeRedirect(Manager.java:852)
  | 	at org.jboss.seam.core.Manager.appendConversationIdFromRedirectFilter(Manager.java:1104)
  | 	at org.jboss.seam.web.RedirectFilter$1.sendRedirect(RedirectFilter.java:66)
  | 	at com.sun.faces.context.ExternalContextImpl.redirect(ExternalContextImpl.java:419)
  | 	at org.ajax4jsf.framework.ajax.AjaxViewHandler.restoreView(AjaxViewHandler.java:180)
  | 	at com.sun.facelets.FaceletViewHandler.restoreView(FaceletViewHandler.java:310)
  | 	at org.ajax4jsf.framework.ViewHandlerWrapper.restoreView(ViewHandlerWrapper.java:116)
  | 	at org.ajax4jsf.framework.ajax.AjaxViewHandler.restoreView(AjaxViewHandler.java:150)
  | 	at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:141)
  | 	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
  | 	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
  | 	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 	at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:264)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 	at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  | 	at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:60)
  | 	at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:55)
  | 	at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:47)
  | 	at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:55)
  | 	at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:81)
  | 	at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:55)
  | 	at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:126)
  | 	at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:248)
  | 	at org.jboss.seam.web.AbstractAjax4jsfFilter.doFilter(AbstractAjax4jsfFilter.java:35)
  | 	at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:55)
  | 	at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:126)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 	at net.sf.ehcache.constructs.web.filter.GzipFilter.doFilter(GzipFilter.java:75)
  | 	at net.sf.ehcache.constructs.web.filter.Filter.doFilter(Filter.java:92)
  | 	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)
  | 

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