[news.eclipse.technology.bpel-designer] Trouble with ReconciliationHelpe

[Hanyu Xiao <hanyu.xiao@xxxxxxxxx>]

Hi,

Could someone tell me how to make the following snippet work?

      Process bpelProcess = BPELFactory.eINSTANCE.createProcess();
      Variables variables = BPELFactory.eINSTANCE.createVariables();

      Variable variable = BPELFactory.eINSTANCE.createVariable();
      variable.setName("foo");
      XSDSimpleTypeDefinition type = 
XSDFactory.eINSTANCE.createXSDSimpleTypeDefinition();
      type.setName("xsd:string");
      variable.setType(type);

      variables.getChildren().add(variable);
      bpelProcess.setVariables(variables);

When executing to the second line from the bottom, I’d get this exception:

Exception in thread "main" java.lang.NullPointerException

      at 
org.eclipse.bpel.model.util.ReconciliationHelper.patchParentElement(ReconciliationHelper.java:481)
      at 
org.eclipse.bpel.model.impl.VariablesImpl.adoptContent(VariablesImpl.java:176)
      at 
org.eclipse.wst.wsdl.internal.impl.WSDLElementImpl.eNotify(WSDLElementImpl.java:392)
      at 
org.eclipse.emf.ecore.util.EcoreEList.dispatchNotification(EcoreEList.java:249)
      at 
org.eclipse.emf.common.notify.impl.NotifyingListImpl.addUnique(NotifyingListImpl.java:300)
      at org.eclipse.emf.common.util.BasicEList.add(BasicEList.java:626)

It seems that ReconciliationHelper assumes that "variables" has a 
container, which won’t be true until the last line is called. But if I 
move the last line to the third, like this:

      Process bpelProcess = BPELFactory.eINSTANCE.createProcess();
      Variables variables = BPELFactory.eINSTANCE.createVariables();
      bpelProcess.setVariables(variables);

      Variable variable = BPELFactory.eINSTANCE.createVariable();
      variable.setName("foo");
      XSDSimpleTypeDefinition type = 
XSDFactory.eINSTANCE.createXSDSimpleTypeDefinition();
      type.setName("xsd:string");
      variable.setType(type);

      variables.getChildren().add(variable);

ReconciliationHelper will throw another exception:

Exception in thread "main" java.lang.NullPointerException
      at 
org.eclipse.bpel.model.util.ReconciliationHelper.getBPELChildElementByLocalName(ReconciliationHelper.java:506)
      at 
org.eclipse.bpel.model.util.ReconciliationHelper.patchParentElement(ReconciliationHelper.java:481)
      at 
org.eclipse.bpel.model.impl.VariablesImpl.adoptContent(VariablesImpl.java:176)
      at 
org.eclipse.wst.wsdl.internal.impl.WSDLElementImpl.eNotify(WSDLElementImpl.java:392)
      at 
org.eclipse.emf.ecore.util.EcoreEList.dispatchNotification(EcoreEList.java:249)
      at 
org.eclipse.emf.common.notify.impl.NotifyingListImpl.addUnique(NotifyingListImpl.java:300)
      at org.eclipse.emf.common.util.BasicEList.add(BasicEList.java:626)

This time ReconciliationHelper assumed that the BPEL model has an 
associated XML element, which is again not correct in this case.

Maybe I’m just not using the BPEL models correctly, but this code used 
to work with the M2 build. What would I need to do to fix this in M3?

Thanks in advance,
Hanyu