[news.eclipse.modeling.gmt.amw] Re: Cannot assign model elements to weav

[Marcos Didonet Del Fabro <mddfabro@xxxxxxx>]

Hi,

when creating a weaving metamodel extension it is necessary to add a 
couple of annotations in the "key" elements that extend WModelRef, 
WElement, etc.

The tool uses these annotations to choose the correct WModels, 
WElementRefs, and the identification mechanism.

The AMW FAQ explains how to create an extension with these annotations:

http://wiki.eclipse.org/index.php/AMW_FAQ#How_to_create_weaving_metamodel_extensions.3F


Regards,

Marcos.


medo samh wrote:
> Hi,
>
>
>
>
> I have the following two simple models conforming to km3.
>
>
>
> Model A
>
>
>
>       class A {
>
>             attribute a1 : String;
>
>             attribute a2 : String;
>
>       }
>
>
>
> Model  B
>
>
>
>       class B {
>
>             attribute a1 : String;
>
>             attribute a3 : String;
>
>       }
>
>
>
> I would like to create a weaving model with a minimum set of elements 
> (model, modelRef, link, linkEnd and ElementRef).
>
>
>
> I have extended amw_core metamodel as follows:
>
>
>
> package class_diff_ext {
>
>
>
> class CModel extends WModel {
>
>     reference CleftModel container : WModelRef;
>
>     reference CrightModel container : WModelRef;
>
> }
>
>
>
> class ModelRef extends WModelRef {
>
> }
>
>
>
> class ElementRef extends WElementRef {
>
> }
>
>
>
> class AttributeAdded extends WLink {
>
>    reference from container : LinkEnd ;
>
>    reference to container :  LinkEnd ;
>
> }
>
>
>
> class LinkEnd extends WLinkEnd {
>
> }
>
> }
>
>
>
> I have used the wizard to create the weaving model.  In page 1/3 - I have 
> loaded the metamodel from the workspace. In page 3/3 - I have selected 
> "ModelRef" and "DefaultWovenPanelExtension" because I do not want to work 
> with XMI ids.
>
>
>
>
> The first time the weaving panel is displayed, I get an internal error in 
> the log saying that "Resource /amw_test/amw_test.ecore is not local" in 
> org.eclipse.core.resources plugin.
>
>
>
> In spite of the message, I can create a weaving link and can create a link 
> end.  But when I try to assign an element from the left or right model, I 
> get two errors
>
> "Unhandled event loop exception" and the second is 
> "java.lang.NullPointerException" with the stack trace below.
>
>
>
> I am using Eclipse 3.2.1, EMF 2.2.1, AMW (Feb 16, 2007) and ATL/AM3 (Feb 16, 
> 2007).
>
>
>
> Thanks in advance for your help,
>
>
>
> java.lang.NullPointerException
>
> at 
> org.eclipse.emf.edit.provider.ComposedAdapterFactory.adapt(ComposedAdapterFactory.java:313)
>
> at 
> org.eclipse.weaver.extension.plugin.util.WeaverExtensionUtil.getElementID(WeaverExtensionUtil.java:220)
>
> at 
> org.eclipse.weaver.extension.plugin.util.WeaverExtensionUtil.createGetWElementRef(WeaverExtensionUtil.java:163)
>
> at 
> org.eclipse.weaver.extension.plugin.util.WeaverExtensionUtil.setLinkEndValueProperty(WeaverExtensionUtil.java:321)
>
> at 
> org.eclipse.weaver.extension.panel.dnd.WeavingPanelDndManager.drop(WeavingPanelDndManager.java:152)
>
> at org.eclipse.swt.dnd.DNDListener.handleEvent(DNDListener.java:65)
>
> 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.Widget.sendEvent(Widget.java:952)
>
> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:937)
>
> at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:709)
>
> at org.eclipse.swt.dnd.DropTarget.Drop(DropTarget.java:423)
>
> at org.eclipse.swt.dnd.DropTarget$3.method6(DropTarget.java:238)
>
> at 
> org.eclipse.swt.internal.ole.win32.COMObject.callback6(COMObject.java:117)
>
> at org.eclipse.swt.internal.ole.win32.COM.DoDragDrop(Native Method)
>
> at org.eclipse.swt.dnd.DragSource.drag(DragSource.java:306)
>
> at org.eclipse.swt.dnd.DragSource.access$0(DragSource.java:277)
>
> at org.eclipse.swt.dnd.DragSource$1.handleEvent(DragSource.java:164)
>
> 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:1914)
>
> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1878)
>
> at 
> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:419)
>
> 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)