Question about retrieving User Object from ExecutionContext
romeufigueira Jan 30, 2007 11:17 AMSo, I've got this object:
public class MySerializableClass implements java.io.Serializable { private static final long serialVersionUID = 1L; int member; public MySerializableClass(int member){ this.member = member; } public boolean equals(Object o) { if (! (o instanceof MySerializableClass)) return false; return ( member == ((MySerializableClass)o).member ); } }
which I put into the context in a certain node by:
context.setVariable("a", new MySerializableClass(4));
and then further down the workflow, I try to retrieve through this operation:
MySerializableClass msc = (MySerializableClass) context.getVariable("a");
And this operation leads to this error:
java.lang.ClassCastException: common.types.MySerializableClass at jbpm.notifications.InsertEvent_ActionHandler.execute(InsertEvent_ActionHandler.java:55) at org.jbpm.graph.def.Action.execute(Action.java:123) at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:235) at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:212) at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:182) at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:166) at org.jbpm.graph.def.Node.enter(Node.java:301) 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.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:205) at org.jbpm.graph.def.Node_$$_javassist_46.enter(Node_$$_javassist_46.java) at org.jbpm.graph.def.Transition.take(Transition.java:119) at org.jbpm.graph.def.Node.leave(Node.java:383) at org.jbpm.graph.exe.ExecutionContext.leaveNode(ExecutionContext.java:136) at org.jbpm.graph.node.Decision.execute(Decision.java:146) at org.jbpm.graph.def.Node.enter(Node.java:316) 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.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:205) at org.jbpm.graph.def.Node_$$_javassist_46.enter(Node_$$_javassist_46.java) at org.jbpm.graph.def.Transition.take(Transition.java:119) at org.jbpm.graph.def.Node.leave(Node.java:383) at org.jbpm.graph.node.StartState.leave(StartState.java:70) 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.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:205) at org.jbpm.graph.def.Node_$$_javassist_46.leave(Node_$$_javassist_46.java) at org.jbpm.graph.exe.Token.signal(Token.java:178) at org.jbpm.graph.exe.Token.signal(Token.java:123) at vvp.ws.notifications.NotificationsWS.Notify(NotificationsWS.java:122) 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.ws.server.ServiceEndpointInvokerJSE.invokeServiceEndpoint(ServiceEndpointInvokerJSE.java:91) at org.jboss.ws.server.AbstractServiceEndpointInvoker.invoke(AbstractServiceEndpointInvoker.java:151) at org.jboss.ws.server.ServiceEndpoint.handleRequest(ServiceEndpoint.java:195) at org.jboss.ws.server.ServiceEndpointManager.processSOAPRequest(ServiceEndpointManager.java:373) at org.jboss.ws.server.StandardEndpointServlet.doPost(StandardEndpointServlet.java:116) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.jboss.ws.server.StandardEndpointServlet.service(StandardEndpointServlet.java:77) 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.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.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)
Now, I've searched the forums, and the best awnser that I've got was this one from JoeDeveloper:
http://blogs.sourceallies.com/roller/page/joedeveloper?entry=jbpm_3_1_auto_user
Now, I've tried his approach and still no go, so what possibly could be wrong here?
PS: My class is taken from the jbpm examples (VariableInstanceDbTest.java), which doesnt try to get the object back, only does an assertEquals.