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[EMF] GettingStartedWithUML2 - resource is null [message #949907]

Fri, 19 October 2012 12:31

Marius ID

Messages: 2
Registered: October 2012

Junior Member

Hi everybody,

I know this may be a too simple question, but I just started playing with EMF and MDT UML2, evaluating the technology for usage in a future project.

I noticed that I can't save the model to an XMI/XML file with a code like this (or any other alternative found):

protected static void save(org.eclipse.uml2.uml.Package package_, URI uri) {

ResourceSet resourceSet = new ResourceSetImpl();

// This is in a separate guarded routine to isolate the compilation error
// from invoking a MDT/UML2 4.0.0 routine on MDT/UML2 3.0.0
org.eclipse.uml2.uml.resources.util.UMLResourcesUtil.init(resourceSet);

Resource resource = resourceSet.createResource(uri);

if (resource != null) {
if (resource.getContents() != null) {
resource.getContents().add(package_);
try {
Resource.Factory.Registry reg = Resource.Factory.Registry.INSTANCE;
Map<String, Object> map = reg.getExtensionToFactoryMap();
map.put("epo2", new XMIResourceFactoryImpl());
resource.save(System.out, null);
out("Done saving " + package_.getName() + " at URI " + uri);
} catch (IOException ioe) {
err(ioe.getMessage());
}
}
else
err("Unable to save " + package_.getName() + " using URI " + uri
+ " since resource contents is null");
}
else
err("Unable to save " + package_.getName() + " using URI " + uri
+ " since resource is null");
}

since I always get that resource is null. But no other message.

I attached the whole example (constructed by following http://wiki.eclipse.org/MDT/UML2/Getting_Started_with_UML2 tutorial.

I'm using Eclipse Juno SR1 with Oracle JDK 1.7 and MDT-UML2 4.0.1.

Can somebody tell me what is missing? Or what else should I do to make it work?

Any help is greatly appreciated.
Many thanks in advance!

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0"@D)#0H)?0T*#0H-"GT-"@``
`
end

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Re: [EMF] GettingStartedWithUML2 - resource is null [message #950024 is a reply to message #949907]

Fri, 19 October 2012 14:53

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

Hi

Please use the UML2 newsgroup for UML2 discussions.

The introduction of UML 2.4 support has caused some difficulties in
ensuring compatibility with older UML
versions;https://bugs.eclipse.org/bugs/show_bug.cgi?id=389542

The final, least bad resolution was arrived at after SR1 and so you need
to use the maintenance branch from GIT, or a recent I-Build.

The problem lies variously in the

Resource resource = resourceSet.createResource(uri);

or the underlying registrations. With SR1, you need to add a global
registration:

Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().put(
UMLResource.FILE_EXTENSION, UMLResource.Factory.INSTANCE);

You should remove this once you use SR2. If you are also using pre-UML
4.0.0 nsURI models you must use the latest GIT/I-Build.

Regards

Ed Willink

On 19/10/2012 13:31, Marius ID wrote:
> Hi everybody,
>
> I know this may be a too simple question, but I just started playing with EMF and MDT UML2, evaluating the technology for usage in a future project.
>
> I noticed that I can't save the model to an XMI/XML file with a code like this (or any other alternative found):
>
>
> protected static void save(org.eclipse.uml2.uml.Package package_, URI uri) {
>
> ResourceSet resourceSet = new ResourceSetImpl();
>
> // This is in a separate guarded routine to isolate the compilation error
> // from invoking a MDT/UML2 4.0.0 routine on MDT/UML2 3.0.0
> org.eclipse.uml2.uml.resources.util.UMLResourcesUtil.init(resourceSet);
>
> Resource resource = resourceSet.createResource(uri);
>
> if (resource != null) {
> if (resource.getContents() != null) {
> resource.getContents().add(package_);
> try {
> Resource.Factory.Registry reg = Resource.Factory.Registry.INSTANCE;
> Map<String, Object> map = reg.getExtensionToFactoryMap();
> map.put("epo2", new XMIResourceFactoryImpl());
> resource.save(System.out, null);
> out("Done saving " + package_.getName() + " at URI " + uri);
> } catch (IOException ioe) {
> err(ioe.getMessage());
> }
> }
> else
> err("Unable to save " + package_.getName() + " using URI " + uri
> + " since resource contents is null");
> }
> else
> err("Unable to save " + package_.getName() + " using URI " + uri
> + " since resource is null");
> }
>
>
> since I always get that resource is null. But no other message.
>
> I attached the whole example (constructed by following http://wiki.eclipse.org/MDT/UML2/Getting_Started_with_UML2 tutorial.
>
> I'm using Eclipse Juno SR1 with Oracle JDK 1.7 and MDT-UML2 4.0.1.
>
> Can somebody tell me what is missing? Or what else should I do to make it work?
>
> Any help is greatly appreciated.
> Many thanks in advance!
>
>

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