Problem about define domain specific processes with enum parameter

[francesco.pietrobelli]

Hi all,

i'm trying to implement a domain specific task using following work definition

import org.drools.process.core.datatype.impl.type.EnumDataType;
[
  [
    "name" : "patientDataHandler",
    "displayName" : "Patient data",
    "parameters" : [
      "Operation" : new EnumDataType("careMgmt.domainSpecificTask.PatientDataOperations"),
    ],
    //"icon" : "icons/notification.gif"
  ]
]

but when i try to modify Operation's parameter in the properties of a patientDataHandler service task in the eclipse bpmn editor i have following error:

java.lang.IllegalArgumentException: Could not find data type careMgmt.domainSpecificTask.PatientDataOperations
at org.drools.process.core.datatype.impl.type.EnumDataType.getValueMap(EnumDataType.java:105)
at org.drools.process.core.datatype.impl.type.EnumDataType.readValue(EnumDataType.java:70)
at org.drools.eclipse.flow.ruleflow.core.WorkItemWrapper.setPropertyValue(WorkItemWrapper.java:172)
at org.eclipse.gef.ui.properties.SetValueCommand.execute(SetValueCommand.java:60)
at org.eclipse.gef.commands.CompoundCommand.execute(CompoundCommand.java:111)
at org.eclipse.gef.commands.CompoundCommand.execute(CompoundCommand.java:111)
at org.eclipse.gef.commands.CommandStack.execute(CommandStack.java:197)
at org.eclipse.gef.ui.properties.UndoablePropertySheetEntry.valueChanged(UndoablePropertySheetEntry.java:147)
at org.eclipse.gef.ui.properties.UndoablePropertySheetEntry.valueChanged(UndoablePropertySheetEntry.java:124)
at org.eclipse.ui.views.properties.PropertySheetEntry.setValue(PropertySheetEntry.java:723)
at org.eclipse.ui.views.properties.PropertySheetEntry.applyEditorValue(PropertySheetEntry.java:146)
at org.eclipse.ui.views.properties.PropertySheetEntry$1.applyEditorValue(PropertySheetEntry.java:103)
at org.eclipse.jface.viewers.CellEditor$1.run(CellEditor.java:333)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
at org.eclipse.jface.viewers.CellEditor.fireApplyEditorValue(CellEditor.java:331)
at org.eclipse.jface.viewers.TextCellEditor.handleDefaultSelection(TextCellEditor.java:293)
at org.eclipse.jface.viewers.TextCellEditor$1.widgetDefaultSelected(TextCellEditor.java:148)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:119)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3552)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3171)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2629)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2593)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)
at org.eclipse.equinox.launcher.Main.run(Main.java:1407)

i don't know because the editor can't find PatientDataOperations, in any project files i can use it.

does anyone know how to define a work item that accept as parameter a enum?

i have put in META-INF directory drools.rulebase.conf and patientDataHandler.conf which i attached.

i attach also the file that define enum

Thanks,

Francesco

[dward]

I am having this problem too. Did you figure it out?

[francesco.pietrobelli]

Hi David,

I'm sorry, but the answer is no.

I have used a StringDataType instead

[dward]

I went to that as well. It is an issue with the eclipse editor, not the work definitions or anything in core jbpm5 itself. After speaking with the jbpm tech lead, he said currently there is no enforcement of variable types, but one could write a custom editor to do that, for now.  I just went with StringDataType for the short term.

[nickrisaro]

I have the same issue, I reimplemented the EnumDataType, it has a bug (at least I think so) in the line where it loads the enum, the original code says:

{code}Class<?> clazz = Class.forName(className);{code}

And Mine is

{code}Class<?> clazz = this.getClass().forName(className);{code}

Now I can pass enums to my handler, and the best part is that the editor "validates" the enum and don't let you type a value that is not listed in your enum

Hope that helps!