[jboss-user] [JBoss jBPM] - problem with getVariable of serializable Object value

[leogamas]

Hi to all,

I'm using the jbpm-starters-kit-3.1.3 and try to set and get variables from the process instance, where all my variables are serializable objects that are instances of a TaskRef class. No problem, but when i try to get the variable from the process instance, i get the following error:


  | org.jbpm.JbpmException: couldn't deserialize object
  |         at org.jbpm.context.exe.converter.SerializableToByteArrayConverter.revert(SerializableToByteArrayConverter.java:66)
  |         at org.jbpm.context.exe.VariableInstance.getValue(VariableInstance.java:146)
  |         at org.jbpm.context.exe.VariableContainer.getVariablesLocally(VariableContainer.java:109)
  |         at org.jbpm.context.exe.VariableContainer.getVariables(VariableContainer.java:93)
  |         at org.cana.tasks.server.TaskServiceImpl.endTask(Unknown Source)
  |         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:597)
  |         at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:262)
  |         at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:146)
  |         at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
  |         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
  |         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
  |         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at org.jbpm.web.JbpmContextFilter.doFilter(JbpmContextFilter.java:83)
  |         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:81)
  |         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.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
  |         at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
  |         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
  |         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:856)
  |         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
  |         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:619)
  | Caused by: java.lang.ClassNotFoundException: No ClassLoaders found for: org.cana.tasks.server.TaskRef
  |         at org.jboss.mx.loading.LoadMgr3.beginLoadTask(LoadMgr3.java:198)
  |         at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:475)
  |         at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:377)
  |         at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
  |         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
  |         at java.lang.Class.forName0(Native Method)
  |         at java.lang.Class.forName(Class.java:247)
  |         at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:604)
  |         at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1575)
  |         at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)
  |         at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732)
  |         at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
  |         at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
  |         at org.jbpm.context.exe.converter.SerializableToByteArrayConverter.revert(SerializableToByteArrayConverter.java:64)
  |         ... 34 more
  | 

I solved  this problem by putting the requested class visible to the jbpm in the lib directory of the server. But after that a get another error:


  | 
  | java.lang.ClassCastException: org.cana.tasks.server.TaskRef cannot be cast to org.cana.tasks.server.TaskRef
  |         at org.cana.tasks.server.TaskServiceImpl.endTask(Unknown Source)
  |         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:597)
  |         at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:262)
  |         at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:146)
  |         at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
  |         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
  |         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
  |         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at org.jbpm.web.JbpmContextFilter.doFilter(JbpmContextFilter.java:83)
  |         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:81)
  |         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.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
  |         at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
  |         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
  |         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:856)
  |         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
  |         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:619)
  | 

It's a problem of class version?,  I put a generated serialVersionUID, but i get tha same error. Someone has any idea about this error.

Thanks in advance,
Leonardo Gamas.

View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4023254#4023254

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4023254