JBPM 5.4使用自定义类对象作为信号事件中的参数

我已经在Tomcat上使用Bitronix作为使用Spring的事务管理器，将jbpm 5.4设置为web应用程序。当我尝试使用自定义类对象作为signalEventJBPM 5.4使用自定义类对象作为信号事件中的参数

ErrorNode en = new ErrorNode(e.getMessage(), "abc", workItem.getId()); 
ksession.getProcessInstance(workItem.getProcessInstanceId()) 
       .signalEvent("error", en);

我得到下面的异常事件参数信号事件。如果将ErrorNode对象替换为仅包含字符串或其他基本类型的String甚至HashMap，则此错误消失。任何洞察为什么会发生这种情况会有所帮助。使用自定义对象时是否缺少配置？我已经声明signal事件的VariableName属性包含此errorNode对象，该对象被声明为相应类型的流程变量。

编辑：如果你是一个jBPM开发者，你可能想看看这个错误，不给的迹象表明，它实际上是在编程方面，导致该错误序列化错误。实际的异常不会传播到输出。

java.lang.RuntimeException: Could not commit session or rollback 
    at org.drools.persistence.SingleSessionCommandService.rollbackTransaction(SingleSessionCommandService.java:406) 
    at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:381) 
    at org.drools.command.impl.CommandBasedStatefulKnowledgeSession.startProcess(CommandBasedStatefulKnowledgeSession.java:223) 
    at services.StartProcess.h2startProcess(StartProcess.java:37) 
    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 org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219) 
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132) 
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745) 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686) 
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:920) 
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:816) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) 
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:801) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:931) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) 
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) 
    at java.lang.Thread.run(Thread.java:662) 
Caused by: java.lang.RuntimeException: Unable to rollback transaction 
    at org.drools.container.spring.beans.persistence.DroolsSpringTransactionManager.rollback(DroolsSpringTransactionManager.java:85) 
    at org.drools.persistence.SingleSessionCommandService.rollbackTransaction(SingleSessionCommandService.java:402) 
    ... 35 more 
Caused by: org.springframework.transaction.IllegalTransactionStateException: Transaction is already completed - do not call commit or rollback more than once per transaction 
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.rollback(AbstractPlatformTransactionManager.java:818) 
    at org.drools.container.spring.beans.persistence.DroolsSpringTransactionManager.rollback(DroolsSpringTransactionManager.java:79) 
    ... 36 more

来源

2013-10-15 Ajay

在进一步的分析，我发现了错误的持久性类归结到一个IOException。该类ErrorNode必须实现Serializable和应该做的伎俩

编辑：如果你是一个jBPM开发者，你可能想看看上面的错误跟踪，不给的迹象表明，它实际上是程序员方面的序列化错误导致此错误。实际的异常不会传播到输出。

来源

2013-10-15 10:25:07 Ajay

JBPM 5.4使用自定义类对象作为信号事件中的参数

回答

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