org.flowable.engine.impl.persistence.entity.TransientVariableInstance cannot be cast to org.flowable.engine.impl.persistence.entity.VariableInstanceEntity

Flowable Engine
1

Hi,
I am using the Flowable (v 6.0.0.rc1). but when a processInstance pass the last UserTask, the Engine throw a exception :org.flowable.engine.impl.persistence.entity.TransientVariableInstance cannot be cast to org.flowable.engine.impl.persistence.entity.VariableInstanceEntity.
there’s my stack:
java.lang.ClassCastException: org.flowable.engine.impl.persistence.entity.TransientVariableInstance cannot be cast to org.flowable.engine.impl.persistence.entity.VariableInstanceEntity
at org.flowable.engine.impl.persistence.entity.ExecutionEntityManagerImpl.deleteDataForExecution(ExecutionEntityManagerImpl.java:567)
at org.flowable.engine.impl.persistence.entity.ExecutionEntityManagerImpl.deleteExecutionAndRelatedData(ExecutionEntityManagerImpl.java:420)
at org.flowable.engine.impl.persistence.entity.ExecutionEntityManagerImpl.deleteProcessInstanceExecutionEntity(ExecutionEntityManagerImpl.java:453)
at org.flowable.engine.impl.agenda.EndExecutionOperation.handleProcessInstanceExecution(EndExecutionOperation.java:90)
at org.flowable.engine.impl.agenda.EndExecutionOperation.handleRegularExecution(EndExecutionOperation.java:206)
at org.flowable.engine.impl.agenda.EndExecutionOperation.run(EndExecutionOperation.java:57)
at org.flowable.engine.impl.interceptor.CommandInvoker.executeOperation(CommandInvoker.java:75)
at org.flowable.engine.impl.interceptor.CommandInvoker.executeOperations(CommandInvoker.java:59)
at org.flowable.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:44)
at org.flowable.engine.impl.interceptor.TransactionContextInterceptor.execute(TransactionContextInterceptor.java:51)
at org.flowable.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:64)
at org.flowable.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:47)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133)
at org.flowable.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:45)
at org.flowable.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:30)
at org.flowable.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:44)
at org.flowable.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:39)
at org.flowable.engine.impl.TaskServiceImpl.complete(TaskServiceImpl.java:194)
at com.system.platform.logic.impl.WorkFlowLogicImpl.auditWorkFlow(WorkFlowLogicImpl.java:207)
at com.system.platform.logic.impl.WorkFlowLogicImpl$$FastClassBySpringCGLIB$$68277c0a.invoke()
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:720)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:52)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:280)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655)
at com.system.platform.logic.impl.WorkFlowLogicImpl$$EnhancerBySpringCGLIB$$7c9915d6.auditWorkFlow()
at com.system.platform.controller.WorkFlowController.auditWorkFlowTask(WorkFlowController.java:213)
at com.system.platform.controller.WorkFlowController$$FastClassBySpringCGLIB$$672fcf44.invoke()
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:720)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:52)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655)
at com.system.platform.controller.WorkFlowController$$EnhancerBySpringCGLIB$$a99b2531.auditWorkFlowTask()
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.logging.log4j.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:71)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745).

please help is in this.

2

Thanks for reporting this, it looks like a bug.
Can you share the process definition and the steps you are executing so we can reproduce the issue?

Thanks,

Tijs

3

dear Tijs
thank you for responding. in my process definition, there are three user tasks and two exclusiveGateways.
every exclusiveGateway has a transient variable named result to choose different path. but when the process instance reach the exclusiveGateway and get to the end event. the exception will be thrown. I follow the stack and find that when the process instance reach the end event, the it will get into the ExecutionEntityManagerImpl.class and execute the method named deleteDataForExecution. in the line 567, the transient variable will be casted the VariableInstanceEntity.
after that, the exception will be thrown.I don’t know why,so please help me.
BTW : my english is poor,forgive me.

4

the new users just can upload one img once ,here’s my secoed img

5

Hi,

Thanks for the additional info, we were able to reproduce the issue.
This commit should fix the issue:

Best regards,

Tijs