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BPMN2.0 + jBPM4.3: org.jbpm.api.JbpmException: couldn't run script: null
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created by <a href="http://community.jboss.org/people/mdohnke">Marco Dohnke</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/549104#549104">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi everybody,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I tried to run a very simple BPMN2.0 process with a single ScriptTask, similar to the process which can be found in the examples. The version of jBPM I use is 4.3.</p><p>Unfortunately jBPM throws an Exception, but not really a readable, what means the exception is null.</p><p>I tried to use jruby as scripting language. The jruby-complete.jar is in the classpath of the project and the language is accepted (I know that because at first i tried 'Jruby' and so on, but only with 'jruby' it works).</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Any chance to get JRuby working with jBPM? Or isn't it implemented yet?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>(the stacktrace, maybe it helps)</p><p><span style="font-size: 8pt; font-family: courier new,courier; ">org.jbpm.api.JbpmException: couldn't run script: null<br/>    at org.jbpm.bpmn.flownodes.ScriptTaskActivity.perform(ScriptTaskActivity.java:44)<br/>    at org.jbpm.bpmn.flownodes.BpmnAutomaticActivity.execute(BpmnAutomaticActivity.java:16)<br/>    at org.jbpm.pvm.internal.model.op.ExecuteActivity.perform(ExecuteActivity.java:60)<br/>    at org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperationSync(ExecutionImpl.java:656)<br/>    at org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperation(ExecutionImpl.java:616)<br/>    at org.jbpm.pvm.internal.model.ExecutionImpl.start(ExecutionImpl.java:217)<br/>    at org.jbpm.pvm.internal.cmd.StartProcessInstanceInLatestCmd.execute(StartProcessInstanceInLatestCmd.java:65)<br/>    at org.jbpm.pvm.internal.cmd.StartProcessInstanceInLatestCmd.execute(StartProcessInstanceInLatestCmd.java:38)<br/>    at org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42)<br/>    at org.jbpm.pvm.internal.tx.StandardTransactionInterceptor.execute(StandardTransactionInterceptor.java:54)<br/>    at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment(EnvironmentInterceptor.java:53)<br/>    at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:40)<br/>    at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:55)<br/>    at org.jbpm.pvm.internal.svc.SkipInterceptor.execute(SkipInterceptor.java:43)<br/>    at org.jbpm.pvm.internal.svc.ExecutionServiceImpl.startProcessInstanceByKey(ExecutionServiceImpl.java:66)<br/>    at de.bfpi.kg.ScriptProcessTest.testScriptProcess(ScriptProcessTest.java:19)<br/>    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<br/>    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)<br/>    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)<br/>    at java.lang.reflect.Method.invoke(Method.java:597)<br/>    at junit.framework.TestCase.runTest(TestCase.java:164)<br/>    at org.jbpm.test.BaseJbpmTestCase.runTest(BaseJbpmTestCase.java:80)<br/>    at junit.framework.TestCase.runBare(TestCase.java:130)<br/>    at junit.framework.TestResult$1.protect(TestResult.java:106)<br/>    at junit.framework.TestResult.runProtected(TestResult.java:124)<br/>    at junit.framework.TestResult.run(TestResult.java:109)<br/>    at junit.framework.TestCase.run(TestCase.java:120)<br/>    at junit.framework.TestSuite.runTest(TestSuite.java:230)<br/>    at junit.framework.TestSuite.run(TestSuite.java:225)<br/>    at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)<br/>    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)<br/>    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)<br/>    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)<br/>    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)<br/>    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)<br/>Caused by: java.lang.UnsupportedOperationException<br/>    at org.jbpm.pvm.internal.script.EnvironmentBindings.entrySet(EnvironmentBindings.java:73)<br/>    at org.jruby.embed.jsr223.JRubyContext.setBindings(JRubyContext.java:182)<br/>    at org.jruby.embed.jsr223.JRubyEngine.setBindings(JRubyEngine.java:231)<br/>    at org.jbpm.pvm.internal.script.ScriptManager.evaluate(ScriptManager.java:123)<br/>    at org.jbpm.pvm.internal.script.ScriptManager.evaluate(ScriptManager.java:118)<br/>    at org.jbpm.pvm.internal.script.ScriptManager.evaluateScript(ScriptManager.java:97)<br/>    at org.jbpm.bpmn.flownodes.ScriptTaskActivity.perform(ScriptTaskActivity.java:41)<br/>    ... 34 more</span></p></div>
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