[jboss-user] [JBoss Seam] - pageflow and exception question

pietermartin do-not-reply at jboss.com
Mon Nov 26 15:31:54 EST 2007


Hi,

I am struggling to get exception handling to work with jpdl pageflows. Not sure whether it is  suppose to work or whether the code needs decision elements everywhere to check for failures.

Currently I get an exception  with the page breaking

my pageflow-definition is as follows

  | 	<page name="captureContactDetails" view-id="/signyouup/contactDetails.xhtml" no-conversation-view-id="/signyouup/choosePhone.xhtml">
  | 		<redirect />
  | 		<transition name="back" to="capturePhoneDetails">
  | 		</transition>
  | 		<transition name="next" to="isCaptureContactSuccessful">
  | 			<action	expression="#{webCustomerAction.persistContact}" />
  | 		</transition>
  | 	</page>
  | 

the action class

  | @Name("webCustomerAction")
  | @Scope(ScopeType.CONVERSATION)
  | public class WebCustomerAction extends SeamedAction  {
  | 
  | 	public String persistContact() {
  | 		log.info("persistContact");
  | 		if (true) {
  | 			throw new SelfcareApplicationException("O my what absolute horror!");
  | 		}
  | 	}
  | }
  | 

in pages...


  | 	<exception>
  | 	   <end-conversation/>
  | 		<redirect view-id="/error.xhtml">
  | 	      <message severity="error">#{org.jboss.seam.handledException.message}</message>
  | 		</redirect>
  | 	</exception>
  | 

The stack trace...

  | 22:11:13,652 INFO  [WebCustomerAction] persistContact
  | 22:11:13,697 ERROR [GraphElement] action threw exception: couldn't evaluate expression '#{webCustomerAction.persistContact}'
  | org.jbpm.JbpmException: couldn't evaluate expression '#{webCustomerAction.persistContact}'
  |         at org.jbpm.jpdl.el.impl.JbpmExpressionEvaluator.evaluate(JbpmExpressionEvaluator.java:43)
  |         at org.jbpm.jpdl.el.impl.JbpmExpressionEvaluator.evaluate(JbpmExpressionEvaluator.java:30)
  |         at org.jbpm.graph.def.Action.execute(Action.java:118)
  |         at org.jboss.seam.bpm.SeamUserCodeInterceptor.executeAction(SeamUserCodeInterceptor.java:70)
  |         at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:262)
  |         at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:220)
  |         at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:190)
  |         at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:174)
  |         at org.jbpm.graph.def.Transition.take(Transition.java:138)
  |         at org.jbpm.graph.def.Node.leave(Node.java:394)
  |         at org.jbpm.graph.exe.Token.signal(Token.java:195)
  |         at org.jbpm.graph.exe.Token.signal(Token.java:158)
  |         at org.jbpm.graph.exe.ProcessInstance.signal(ProcessInstance.java:283)
  |         at org.jboss.seam.pageflow.Pageflow.signal(Pageflow.java:477)
  |         at org.jboss.seam.pageflow.Pageflow.navigate(Pageflow.java:336)
  |         at org.jboss.seam.jsf.SeamNavigationHandler.handleNavigation(SeamNavigationHandler.java:40)
  |         at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:119)
  |         at javax.faces.component.UICommand.broadcast(UICommand.java:383)
  |         at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:184)
  |         at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:162)
  |         at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:350)
  |         at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)
  |         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.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
  |         at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
  |         at org.jboss.seam.servlet.SeamFilter$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.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
  |         at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
  |         at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
  |         at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  |         at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
  |         at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  |         at org.jboss.seam.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.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  |         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.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
  |         at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
  |         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
  |         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
  |         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
  |         at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
  |         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
  |         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
  |         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
  |         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
  |         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
  |         at java.lang.Thread.run(Thread.java:595)
  | Caused by: javax.el.PropertyNotFoundException: Property 'persistContact' not found on type com.yannitech.virgin.selfcare.customer.manager.WebCustomerAction_$$_javassist_2
  |         at javax.el.BeanELResolver$BeanProperties.get(BeanELResolver.java:193)
  |         at javax.el.BeanELResolver$BeanProperties.access$400(BeanELResolver.java:170)
  |         at javax.el.BeanELResolver.property(BeanELResolver.java:279)
  |         at javax.el.BeanELResolver.getValue(BeanELResolver.java:60)
  |         at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
  |         at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
  |         at org.jboss.el.parser.AstPropertySuffix.getValue(AstPropertySuffix.java:53)
  |         at org.jboss.el.parser.AstValue.getValue(AstValue.java:67)
  |         at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
  |         at org.jboss.seam.bpm.SeamExpressionEvaluator$1.evaluate(SeamExpressionEvaluator.java:85)
  |         at org.jboss.seam.bpm.SeamExpressionEvaluator.evaluate(SeamExpressionEvaluator.java:36)
  |         at org.jbpm.jpdl.el.impl.JbpmExpressionEvaluator.evaluate(JbpmExpressionEvaluator.java:39)
  |         ... 59 more
  | 22:11:13,700 WARN  [lifecycle] couldn't evaluate expression '#{webCustomerAction.persistContact}'
  | org.jbpm.JbpmException: couldn't evaluate expression '#{webCustomerAction.persistContact}'
  |         at org.jbpm.jpdl.el.impl.JbpmExpressionEvaluator.evaluate(JbpmExpressionEvaluator.java:43)
  |         at org.jbpm.jpdl.el.impl.JbpmExpressionEvaluator.evaluate(JbpmExpressionEvaluator.java:30)
  |         at org.jbpm.graph.def.Action.execute(Action.java:118)
  |         at org.jboss.seam.bpm.SeamUserCodeInterceptor.executeAction(SeamUserCodeInterceptor.java:70)
  |         at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:262)
  |         at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:220)
  |         at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:190)
  |         at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:174)
  |         at org.jbpm.graph.def.Transition.take(Transition.java:138)
  |         at org.jbpm.graph.def.Node.leave(Node.java:394)
  |         at org.jbpm.graph.exe.Token.signal(Token.java:195)
  |         at org.jbpm.graph.exe.Token.signal(Token.java:158)
  |         at org.jbpm.graph.exe.ProcessInstance.signal(ProcessInstance.java:283)
  |         at org.jboss.seam.pageflow.Pageflow.signal(Pageflow.java:477)
  |         at org.jboss.seam.pageflow.Pageflow.navigate(Pageflow.java:336)
  |         at org.jboss.seam.jsf.SeamNavigationHandler.handleNavigation(SeamNavigationHandler.java:40)
  |         at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:119)
  |         at javax.faces.component.UICommand.broadcast(UICommand.java:383)
  |         at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:184)
  |         at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:162)
  |         at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:350)
  |         at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)
  |         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.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
  |         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.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
  |         at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
  |         at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
  |         at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  |         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.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.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  |         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.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
  |         at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
  |         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
  |         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
  |         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
  |         at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
  |         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
  |         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
  |         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
  |         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
  |         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
  |         at java.lang.Thread.run(Thread.java:595)
  | Caused by: javax.el.PropertyNotFoundException: Property 'persistContact' not found on type com.yannitech.virgin.selfcare.customer.manager.WebCustomerAction_$$_javassist_2
  |         at javax.el.BeanELResolver$BeanProperties.get(BeanELResolver.java:193)
  |         at javax.el.BeanELResolver$BeanProperties.access$400(BeanELResolver.java:170)
  |         at javax.el.BeanELResolver.property(BeanELResolver.java:279)
  |         at javax.el.BeanELResolver.getValue(BeanELResolver.java:60)
  |         at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
  |         at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
  |         at org.jboss.el.parser.AstPropertySuffix.getValue(AstPropertySuffix.java:53)
  |         at org.jboss.el.parser.AstValue.getValue(AstValue.java:67)
  |         at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
  |         at org.jboss.seam.bpm.SeamExpressionEvaluator$1.evaluate(SeamExpressionEvaluator.java:85)
  |         at org.jboss.seam.bpm.SeamExpressionEvaluator.evaluate(SeamExpressionEvaluator.java:36)
  |         at org.jbpm.jpdl.el.impl.JbpmExpressionEvaluator.evaluate(JbpmExpressionEvaluator.java:39)
  |         ... 59 more
  | 22:11:13,701 WARN  [lifecycle] executePhase(INVOKE_APPLICATION 5,com.sun.faces.context.FacesContextImpl at 1aa39a3) threw exception
  | javax.faces.FacesException: couldn't evaluate expression '#{webCustomerAction.persistContact}'
  |         at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:105)
  |         at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
  |         at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
  |         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
  |         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
  |         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  |         at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
  |         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$FilterChainImpl.doFilter(SeamFilter.java:69)
  |         at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
  |         at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
  |         at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
  |         at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  |         at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
  |         at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
  |         at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
  |         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  |         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  |         at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  |         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  |         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  |         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
  |         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
  |         at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
  |         at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
  |         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
  |         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
  |         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
  |         at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
  |         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
  |         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
  |         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
  |         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
  |         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
  |         at java.lang.Thread.run(Thread.java:595)
  | Caused by: org.jbpm.JbpmException: couldn't evaluate expression '#{webCustomerAction.persistContact}'
  |         at org.jbpm.jpdl.el.impl.JbpmExpressionEvaluator.evaluate(JbpmExpressionEvaluator.java:43)
  |         at org.jbpm.jpdl.el.impl.JbpmExpressionEvaluator.evaluate(JbpmExpressionEvaluator.java:30)
  |         at org.jbpm.graph.def.Action.execute(Action.java:118)
  |         at org.jboss.seam.bpm.SeamUserCodeInterceptor.executeAction(SeamUserCodeInterceptor.java:70)
  |         at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:262)
  |         at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:220)
  |         at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:190)
  |         at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:174)
  |         at org.jbpm.graph.def.Transition.take(Transition.java:138)
  |         at org.jbpm.graph.def.Node.leave(Node.java:394)
  |         at org.jbpm.graph.exe.Token.signal(Token.java:195)
  |         at org.jbpm.graph.exe.Token.signal(Token.java:158)
  |         at org.jbpm.graph.exe.ProcessInstance.signal(ProcessInstance.java:283)
  |         at org.jboss.seam.pageflow.Pageflow.signal(Pageflow.java:477)
  |         at org.jboss.seam.pageflow.Pageflow.navigate(Pageflow.java:336)
  |         at org.jboss.seam.jsf.SeamNavigationHandler.handleNavigation(SeamNavigationHandler.java:40)
  |         at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:119)
  |         at javax.faces.component.UICommand.broadcast(UICommand.java:383)
  |         at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:184)
  |         at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:162)
  |         at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:350)
  |         at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)
  |         ... 38 more
  | Caused by: javax.el.PropertyNotFoundException: Property 'persistContact' not found on type com.yannitech.virgin.selfcare.customer.manager.WebCustomerAction_$$_javassist_2
  |         at javax.el.BeanELResolver$BeanProperties.get(BeanELResolver.java:193)
  |         at javax.el.BeanELResolver$BeanProperties.access$400(BeanELResolver.java:170)
  |         at javax.el.BeanELResolver.property(BeanELResolver.java:279)
  |         at javax.el.BeanELResolver.getValue(BeanELResolver.java:60)
  |         at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
  |         at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
  |         at org.jboss.el.parser.AstPropertySuffix.getValue(AstPropertySuffix.java:53)
  |         at org.jboss.el.parser.AstValue.getValue(AstValue.java:67)
  |         at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
  |         at org.jboss.seam.bpm.SeamExpressionEvaluator$1.evaluate(SeamExpressionEvaluator.java:85)
  |         at org.jboss.seam.bpm.SeamExpressionEvaluator.evaluate(SeamExpressionEvaluator.java:36)
  |         at org.jbpm.jpdl.el.impl.JbpmExpressionEvaluator.evaluate(JbpmExpressionEvaluator.java:39)
  |         ... 59 more
  | 
  | 

I see that in the dvd example app the action methods are themselves ocurring in a try catch block
eg.



  |     public String saveUser() {
  |         if (!isValidNamePassword()) {
  |             facesMessages.add("User name #{customer.userName} is not unique");
  |             return null;
  |         }
  | 
  |         try {
  |             em.persist(customer);
  |             sessionContext.set("currentUser", customer);
  |             Actor.instance().setId(customer.getUserName());
  |             
  |             identity.setUsername(customer.getUserName());
  |             identity.setPassword(customer.getPassword());
  |             identity.login();
  |             
  |             facesMessages.addFromResourceBundle("createCustomerSuccess");
  |             return "success";
  |         } catch (InvalidStateException e) {
  |             InvalidValue[] vals = e.getInvalidValues();
  |             for (InvalidValue val: vals) {
  |                 facesMessages.add(val);
  |             }
  | 
  |             return null;
  |         } catch (RuntimeException e) {
  |             ctx.setRollbackOnly();
  | 
  |             facesMessages.addFromResourceBundle("createCustomerError");
  | 
  |             return null;
  |         }
  |     }
  | 

Is this the preferred way?

Any pointers appreciated.

I am using seam-2.0.0.GA and jboss 4.2.2.GA

Thanks
Pieter

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