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1. Re: java activity argument problem
nuvole May 28, 2009 4:13 AM (in response to nuvole)"nuvole" wrote:
Hi, all~!
I'm using jbpm4-beta2 version and jpdl java activity.
but i don't know how java activity invoke method with Object type argument.<?xml version="1.0" encoding="UTF-8"?> <process name="Java" xmlns="http://jbpm.org/4.0/jpdl"> <start g="20,20,48,48"> <transition name="" to="invoke java method"/> </start> <java class="com.xener.jbpm.JohnDoe" g="96,16,127,52" method="hello" name="invoke java method" var="answer"> <field name="state"><string value="fine"/></field> <field name="session"><env type="org.hibernate.Session"/></field> <arg> <object class="com.xener.jbpm.JohnDoeMsg"> <field name="msg"><string value="#{msgObject}"/></field> </object> </arg> <transition name="" to="wait"/> </java> <state g="255,16,88,52" name="wait"/> </process>
but this error occured:16:38:12,187 ERROR [STDERR] org.hibernate.HibernateException: instance not of expected entity type: org.jbpm.pvm.internal.type.variable.UnpersistableVariable is not a: org.jbpm.pvm.internal.type.Vari ble at org.hibernate.persister.entity.AbstractEntityPersister.getSubclassEntityPersister(Abstra tEntityPersister.java:3663) at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1374) at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:203) at org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListen r.java:535) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSave rUpdateEventListener.java:103) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpd teEventListener.java:93) at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:534) at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:526) at org.hibernate.engine.CascadingAction$5.cascade(CascadingAction.java:241) at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:291) at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:239) at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:192) at org.hibernate.engine.Cascade.cascadeCollectionElements(Cascade.java:319) at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java:265) at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:242) at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:192) at org.hibernate.engine.Cascade.cascade(Cascade.java:153) at org.hibernate.event.def.AbstractFlushingEventListener.cascadeOnFlush(AbstractFlushingEve tListener.java:154) at org.hibernate.event.def.AbstractFlushingEventListener.prepareEntityFlushes(AbstractFlush ngEventListener.java:145) at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(Abstra tFlushingEventListener.java:88) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java 49) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1027) at org.jbpm.pvm.internal.tx.HibernateSessionResource.prepare(HibernateSessionResource.java: 4) at org.jbpm.pvm.internal.tx.StandardTransaction.commit(StandardTransaction.java:106) at org.jbpm.pvm.internal.tx.StandardTransaction.complete(StandardTransaction.java:65) at org.jbpm.pvm.internal.tx.StandardTransactionInterceptor.execute(StandardTransactionInter eptor.java:61) at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:54) at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:55) at org.jbpm.pvm.internal.svc.ExecutionServiceImpl.startProcessInstanceByKey(ExecutionServic Impl.java:72) at com.xener.jbpm.JavaInstantiateTest.testJavaInstantiate(JavaInstantiateTest.java:65) at com.xener.jbpm.web.JBPMServlet.doGet(JBPMServlet.java:23) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain. ava:290) 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. ava:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.j va:190) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextE tablishmentValve.java:126) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEs ablishmentValve.java:70) 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 158) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.j va:601) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619)
Thanks for any help~! -
2. Re: java activity argument problem
jokum Jun 3, 2009 2:58 AM (in response to nuvole)In case you still got the problem. I also had this error due to the fact the Object I was adding as a variable was not Serializable.
Implementing java.io.Serializable should fix this error.
Greetz