sub-process invocation

[petia]

Hi,

How do I invoke a sub-process from a main-process?

I am trying to invoke a sub-process (in jBPM 3.1.4) but I fail.
I have the following code in my main-process definition:

 <process-state name="sub1">
 <sub-process name="sequence"></sub-process>
 <transition name="" to="task2"></transition>
 </process-state>

I have a process called sequence which is defined in the same process library as the main-process and which is successfully deployed and tested.

The beginning of sequence/processdefinition.xml file looks like this:

<process-definition
 xmlns="urn:jbpm.org:jpdl-3.1" name="sequence">
...

When I am trying to deploy the main-process I am getting the following error message. (If the sub-process invocation is excluded, the main-process deploys nicely.)

java.io.IOException: Server returned HTTP response code: 500 for URL: http://localhost:8080/jbpm/upload
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at org.jbpm.ui.util.ProcessDeployer.deployProcessWithServlet(Unknown Source)
at org.jbpm.ui.util.ProcessDeployer.access$3(Unknown Source)
at org.jbpm.ui.util.ProcessDeployer$1.run(Unknown Source)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:369)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:313)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:479)
at org.jbpm.ui.util.ProcessDeployer.showProgressMonitorDialog(Unknown Source)
at org.jbpm.ui.util.ProcessDeployer.deploy(Unknown Source)
at org.jbpm.ui.editor.form.deployment.DeploymentForm$1.widgetSelected(Unknown Source)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:90)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3348)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2968)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1930)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1894)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:422)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:95)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)

It seems that I do not refer to the sub-process properly. I have tried to find more information about how to do this on this forum and in the documentation, but I have not succeed to find out how to do.

Help is appreciated. Thanks for taking your time.
Kind regards, Petia

[kukeltje]

look what the SERVER logs.... why it throws a 500

[petia]

Sorry for the silly question, but where do I find the server log. I have really tried to find it (and searched through all log files modified last day) but I fail.

I posted the question because I thought the problem of properly referring to a sub-process is similar to this of properly referring to a variable. It took me some time to find out a working syntax for accessing a variable from a xml process specification. The syntax I use now is: contextInstance.variables['variable-name'] (as pointed out on this forum not a straightforward syntax, but it is working. I did not get the syntax proposed in the documentation to work.). I thought that something similar may apply for process invocations.