Hi all,
I am trying to develop a webservice for jbpm. In this case I am using stateless
session EJB and I have exposed it as a webservice .
EJB has business method -> processDefinitionNames()
Which is a very basic method (not at all fancy! Just returns the String of all
processDefinitions())
anonymous wrote :
| |
| | public String processDefinitionNames() {
| | // TODO Auto-generated method stub
| | String processDefinitionNames = "ECSPUT\n";
| | JbpmContext jbpmContext =
JbpmContext.getCurrentJbpmContext();
| | java.util.List processDefinitions =
jbpmContext.getGraphSession().findAllProcessDefinitions();
| |
| | if (processDefinitions.isEmpty() == false) {
| | java.util.ListIterator listProcessDefinitions =
processDefinitions
| | .listIterator();
| |
| | while (listProcessDefinitions.hasNext()) {
| |
| | ProcessDefinition processDefinition =
(ProcessDefinition) listProcessDefinitions
| | .next();
| | processDefinitionNames =
processDefinitionNames
| | + processDefinition.getName()
| | + "\n";
| | }
| | }
| | return processDefinitionNames;
| | }
| |
However for jbpmContext.getGraphSession().findAllProcessDefinitions();
I get following error when I try to use processDefinitionNames() method in my
SOAP client
anonymous wrote : 14:37:58,187 ERROR [ServerEngine] Server error: AxisFault
| | faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Client
| | faultSubcode:
| | faultString: RuntimeException; nested exception is:
| | java.lang.NullPointerException
| | faultActor:
| | faultNode:
| | faultDetail:
| | {http://xml.apache.org/axis/}stackTrace:
java.rmi.ServerException: RuntimeException; nested exception is:
| | java.lang.NullPointerException
| | at
org.jboss.ejb.plugins.LogInterceptor.handleException(LogInterceptor.java:400)
| | at
org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:210)
| | at
org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:136)
| | at
org.jboss.ejb.SessionContainer.internalInvoke(SessionContainer.java:643)
| | at org.jboss.ejb.Container.invoke(Container.java:917)
| | 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.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
| | at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
| | at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
| | at
org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:260)
| | at
org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
| | at
org.jboss.webservice.server.InvokerProviderEJB.invokeServiceEndpoint(InvokerProviderEJB.java:144)
| | at
org.jboss.webservice.server.InvokerProvider.invokeMethod(InvokerProvider.java:327)
| | at
org.jboss.axis.providers.java.RPCProvider.invokeTarget(RPCProvider.java:176)
| | at
org.jboss.axis.providers.java.RPCProvider.processMessage(RPCProvider.java:121)
| | at
org.jboss.axis.providers.java.JavaProvider.invoke(JavaProvider.java:358)
| | at
org.jboss.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:73)
| | at org.jboss.axis.SimpleChain.doVisiting(SimpleChain.java:160)
| | at org.jboss.axis.SimpleChain.invoke(SimpleChain.java:123)
| | at
org.jboss.axis.handlers.soap.SOAPService.invoke(SOAPService.java:560)
| | at
org.jboss.webservice.server.ServerEngine.invokeInternal(ServerEngine.java:215)
| | at
org.jboss.webservice.server.ServerEngine.invoke(ServerEngine.java:104)
| | at
org.jboss.axis.transport.http.AxisServlet.doPost(AxisServlet.java:911)
| | at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
| | at
org.jboss.axis.transport.http.AxisServletBase.service(AxisServletBase.java:370)
| | 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.CustomPrincipalValve.invoke(CustomPrincipalValve.java:54)
| | at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:174)
| | 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.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:868)
| | at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663)
| | at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
| | at
org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
| | at java.lang.Thread.run(Thread.java:595)
| | Caused by: java.lang.NullPointerException
| | at
com.exegenix.ExegenixWork1Bean.processDefinitionNames(ExegenixWork1Bean.java:111)
| | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| | at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
| | at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| | at java.lang.reflect.Method.invoke(Method.java:585)
| | at
org.jboss.invocation.Invocation.performCall(Invocation.java:359)
| | at
org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:228)
| | at
org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:158)
| | at
org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:169)
| | at
org.jboss.webservice.server.ServiceEndpointInterceptor.invoke(ServiceEndpointInterceptor.java:126)
| | at
org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:63)
| | at
org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:121)
| | at
org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:350)
| | at
org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:181)
| | at
org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:168)
| | at
org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:206)
| | ... 46 more
| |
| |
Can any one suggest me something?
Thanks and Regards
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