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BooleanDataType in work item definition causes ClassCastException in the BPMN2 process editor
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created by <a href="https://community.jboss.org/people/osebelin">Olaf Sebelin</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/802702#802702">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I defined a work item definition that has a boolean parameter. Entering a value for that boolean parameter in the BPMN2 process editor plugin in Eclipse, causes a ClassCastException when selecting the work item for display in the Properties tab.</p><p>This happens when I close the editor and reopen it. afterwards the selection of work items doesn't work properly. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Stacktrace:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Boolean
    at org.drools.process.core.datatype.impl.type.BooleanDataType.writeValue(BooleanDataType.java:52)
    at org.drools.eclipse.flow.ruleflow.core.WorkItemWrapper.getPropertyValue(WorkItemWrapper.java:145)
    at org.eclipse.ui.views.properties.PropertySheetEntry.refreshValues(PropertySheetEntry.java:611)
    at org.eclipse.ui.views.properties.PropertySheetEntry.refreshChildEntries(PropertySheetEntry.java:568)
    at org.eclipse.ui.views.properties.PropertySheetEntry.setValues(PropertySheetEntry.java:760)
    at org.eclipse.ui.views.properties.PropertySheetViewer.setInput(PropertySheetViewer.java:973)
    at org.eclipse.ui.views.properties.PropertySheetPage.selectionChanged(PropertySheetPage.java:510)
    at org.eclipse.ui.views.properties.PropertySheet.selectionChanged(PropertySheet.java:363)
    at org.eclipse.ui.internal.AbstractSelectionService.firePostSelection(AbstractSelectionService.java:179)
    at org.eclipse.ui.internal.AbstractSelectionService$2.selectionChanged(AbstractSelectionService.java:71)
    at org.eclipse.gef.ui.parts.AbstractEditPartViewer.fireSelectionChanged(AbstractEditPartViewer.java:247)
    at org.eclipse.gef.ui.parts.AbstractEditPartViewer$1.run(AbstractEditPartViewer.java:131)
    at org.eclipse.gef.SelectionManager.fireSelectionChanged(SelectionManager.java:144)
    at org.eclipse.gef.SelectionManager.appendSelection(SelectionManager.java:83)
    at org.eclipse.gef.ui.parts.AbstractEditPartViewer.appendSelection(AbstractEditPartViewer.java:190)
    at org.eclipse.gef.ui.parts.AbstractEditPartViewer.select(AbstractEditPartViewer.java:599)
    at org.eclipse.gef.tools.SelectEditPartTracker.performSelection(SelectEditPartTracker.java:221)
    at org.eclipse.gef.tools.SelectEditPartTracker.performConditionalSelection(SelectEditPartTracker.java:167)
    at org.eclipse.gef.tools.SelectEditPartTracker.handleButtonDown(SelectEditPartTracker.java:92)
    at org.eclipse.gef.tools.AbstractTool.mouseDown(AbstractTool.java:1091)
    at org.eclipse.gef.tools.SelectionTool.mouseDown(SelectionTool.java:514)
    at org.eclipse.gef.EditDomain.mouseDown(EditDomain.java:245)
    at org.eclipse.gef.ui.parts.DomainEventDispatcher.dispatchMousePressed(DomainEventDispatcher.java:348)
    at org.eclipse.draw2d.LightweightSystem$EventHandler.mouseDown(LightweightSystem.java:523)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:191)
    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:3588)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3209)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
    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:344)
    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:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The exception can be reproduced with the following simple example work item definition.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code">import org.drools.process.core.datatype.impl.type.BooleanDataType;
import org.drools.process.core.datatype.impl.type.StringDataType;
import org.drools.process.core.datatype.impl.type.ObjectDataType;
[
  [
    "name" : "MyTask",
    "displayName" : "My Task",
    "parameters" : [
      "MyStringParam" : new StringDataType(),
      "MyBoolParam" : new BooleanDataType()
    ],
    "results" : [
      "Result" : new ObjectDataType("java.util.Map")
    ],
    "displayName" : "My Task",
  ]
]
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The editor field for the "MyBoolParam" is a text field. What do I have to do ta make this a boolean editor field (e.g. a drop down box like the Terminate parameter  in the End Event)?</p><p>BTW, This occurs with IntegerDataTypes, too. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thank you for your help</p><p>Olaf</p></div>
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<p style="margin: 0;">Reply to this message by <a href="https://community.jboss.org/message/802702#802702">going to Community</a></p>
<p style="margin: 0;">Start a new discussion in jBPM at <a href="https://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2034">Community</a></p>
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