[jboss-user] [JBoss Seam] - Adding Seam to an existing EJB2 application

kummer do-not-reply at jboss.com
Wed Sep 12 12:20:47 EDT 2007


I'm trying to add Seam to an old EJB2 application so that we can do new development in Seam and gradually port the old stuff into Seam.

I starting by merging the deployment directory of an "empty" Seam application, SeamApp, (created with seam-gen new-project) into the exploaded deployment legacy application, just to see if this was workable. There isn't really that much to copy across: 

  - the jars, including SeamApp.jar.
  - module entries in META-INF/application.xml. 
  - security.drl - the jboss rules' security defintions.
  - Seam-specific entries in web.xml
  - other files in SeamApp.war 

I left META-INF/jboss-app.xml intact. It already contains a <loader-repository> entry and cannot have two. 

After this the old application worked fine and I could access home.seam.

Next I created a SFSB, DemoManager, using create-conversation in seam-gen and copied the diff of the deploy the same way to the deploeyd old app. This time (also after server restart) I get an exception when trying to access the new page:

18:14:16,421 ERROR [STDERR] 12.09.2007 18:14:16 com.sun.facelets.FaceletViewHandler handleRenderException
  | SCHWERWIEGEND: Error Rendering View[/demoManager.xhtml]
  | javax.el.ELException: /demoManager.xhtml: Exception getting value of property value of base of type : org.javassist.tmp.java.lang.Object_$$_javassist_0
  | 	at com.sun.facelets.compiler.TextInstruction.write(TextInstruction.java:48)
  | 	at com.sun.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:39)
  | 	at org.ajax4jsf.framework.renderer.RendererBase.renderChild(RendererBase.java:280)
  | 	at org.ajax4jsf.framework.renderer.RendererBase.renderChildren(RendererBase.java:262)
  | 	at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:189)
  | 	at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:184)
  | 	at org.ajax4jsf.framework.renderer.RendererBase.encodeChildren(RendererBase.java:121)
  | 	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:524)
  | 	at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:244)
  | 	at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
  | 	at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:573)
  | 	at org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
  | 	at org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:229)
  | 	at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384)
  | 	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | 	at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63)
  | 	at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60)
  | 	at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
  | 	at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
  | 	at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
  | 	at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57)
  | 	at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
  | 	at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79)
  | 	at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
  | 	at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | 	at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:234)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | 	at lu.deka.servlets.LoggedInFilter.doFilter(LoggedInFilter.java:56)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | 	at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:96)
  | 	at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | 	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  | 	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.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
  | 	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
  | 	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
  | 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
  | 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
  | 	at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
  | 	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.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
  | 	at java.lang.Thread.run(Thread.java:595)
  | Caused by: javax.faces.el.EvaluationException: Bean: org.javassist.tmp.java.lang.Object_$$_javassist_0, property: value
  | 	at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:442)
  | 	at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:82)
  | 	at com.sun.facelets.el.LegacyELContext$LegacyELResolver.getValue(LegacyELContext.java:141)
  | 	at com.sun.el.parser.AstValue.getValue(AstValue.java:125)
  | 	at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:195)
  | 	at com.sun.facelets.el.ELText$ELTextVariable.writeText(ELText.java:184)
  | 	at com.sun.facelets.compiler.TextInstruction.write(TextInstruction.java:45)
  | 	... 56 more
  | Caused by: java.lang.reflect.InvocationTargetException
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 	at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:438)
  | 	... 62 more
  | Caused by: java.lang.IllegalArgumentException: Could not invoke method by reflection: DemoManager.getValue() on: $Proxy167
  | 	at org.jboss.seam.util.Reflections.invoke(Reflections.java:30)
  | 	at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
  | 	at org.jboss.seam.intercept.ClientSideInterceptor$1.proceed(ClientSideInterceptor.java:72)
  | 	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:57)
  | 	at org.jboss.seam.interceptors.RemoveInterceptor.aroundInvoke(RemoveInterceptor.java:40)
  | 	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
  | 	at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:103)
  | 	at org.jboss.seam.intercept.ClientSideInterceptor.invoke(ClientSideInterceptor.java:50)
  | 	at org.javassist.tmp.java.lang.Object_$$_javassist_0.getValue(Object_$$_javassist_0.java)
  | 	... 67 more
  | Caused by: java.lang.IllegalArgumentException: object is not an instance of declaring class
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 	at org.jboss.seam.util.Reflections.invoke(Reflections.java:20)
  | 	... 75 more
  | 

Do you have any idea how to solve this or am I perhaps on the wrong track altogeather?

Cheers
Thor

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