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Home » Modeling » Graphiti » Solved: Package with uri 'http://xyz.de/1.0' not found(A not empty diagram won't open after restarting the RCP Application)

Solved: Package with uri 'http://xyz.de/1.0' not found [message #777060]

Mon, 09 January 2012 13:54

Eclipse User

Hey together,

I have yet a very simple model. Process, Connector and Flow.

When I create a Diagram and add e.g. one element to the diagram and save it, it will reopen nicely if I don't restart the whole RCP application.

But when I restart the whole application and try to open a diagram with more than zero elements I'll get a Package not found exception:

org.eclipse.emf.ecore.xmi.PackageNotFoundException: Package with uri 'http://foo.de/1.0' not found.

And a Null Pointer Exception at

org.eclipse.graphiti.ui.internal.editor.DiagramEditorInternal.dispose(DiagramEditorInternal.java:552)

I created the EMF model and the corresponding code within eclipse via a diagram editor and created the code with the help of the automatically created ".genmodel".

Does anyone have any suggestions? If yes, please keep in mind that I am still quite lost in the giant world of EMF, GEF, Graphiti, Eclipse RCP (even after 6 months of sporadically programming this graphiti tool and quite good knowledge in java programming)

Thanks for your help!

Best Bjoern

[Updated on: Tue, 10 January 2012 09:39] by Moderator

Re: Package with uri 'http://xyz.de/1.0' not found [message #777380 is a reply to message #777060]

Tue, 10 January 2012 06:20

Eclipse User

Not sure, but this sounds as if the EMF model (its package) is not correctly
registered in your plugin.xml...

Michael

Re: Package with uri 'http://xyz.de/1.0' not found [message #777450 is a reply to message #777380]

Tue, 10 January 2012 09:37

Eclipse User

Solved it:
If anyone is interested: Check out the EMF Faq: http://wiki.eclipse.org/EMF/FAQ#I_get_a_PackageNotFoundException:_e.g..2C_.22Package_with_uri_.27http:.2F.2Fcom.example.company.ecore.27_not_found..22_What_do_I_need_to_do.3F

In my case I named the generated EMF model simply "model". EMF generated 3 packages: "eModel.Model", "eModel.model.impl" and "eModel.model.util".

These packages were not registered during runtime by just opening a diagram, but were registered somehow when creating a new diagram. When I tried to open my already existing diagram after a fresh start, the package couldn't be found and an exception was thrown.
To register the packages during runtime I simply had to call:

ModelPackage mp = ModelPackage.eINSTANCE;

"ModelPackage" is a class generated by EMF and in my case can be found in "eModel.Model"

Best Björn

Re: Package with uri 'http://xyz.de/1.0' not found [message #1021655 is a reply to message #777450]

Wed, 20 March 2013 09:13

Eclipse User

I had the same problem when developing an Eclipse Plugin.

I resolved adding an extension to my plugin.xml file:

<extension point="org.eclipse.emf.ecore.generated_package">
<package uri="NS Uri of Ecore model"
class="uri.NameOfModelPackage"
genModel="genmodel path"/>
</extension>

An example could be:

<extension point="org.eclipse.emf.ecore.generated_package">
<package uri="http://eclipse.org/graphiti/mm/examples/library"
class="org.eclipse.graphiti.examples.library.LibraryPackage"
genModel="model/Library.genmodel"/>
</extension>

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