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(headless) load domain model from diagram file [message #178530]

Fri, 21 March 2008 00:06

Jelle Herold

Messages: 42
Registered: July 2009

Member

What would be the best way to load the EMF domain model from a diagram (same file for
both view and domain models) in a (headless) application?

Preferably using just EMF dependencies.

Currently I took some code from the generated classes, this fails to create the
EditingDomain (application exits without throwing any exceptions). The idea is
to grab the domain from the diagram using Diagram.getElement() or similar.

public Diagram loadDiagram(File file)
{
EditingDomain domain = DiagramEditingDomainFactory.getInstance().createEditingDomai n();
URI uri = URI.createFileURI(file.getAbsolutePath());
Resource resource = domain.getResourceSet().getResource(uri.trimFragment(), false);

if (resource == null)
resource = domain.getResourceSet().createResource(uri.trimFragment());

if (!resource.isLoaded())
{
// @see 171060
Map options = new HashMap(GMFResourceFactory.getDefaultLoadOptions());
options.put(XMLResource.OPTION_RECORD_UNKNOWN_FEATURE, Boolean.TRUE);

resource.load(options);
}

if (uri.fragment() != null)
{
EObject rootElement = resource.getEObject(uri.fragment());
if(rootElement instanceof Diagram)
return (Diagram) rootElement;
}
else
for(Object rootElement : resource.getContents())
if(rootElement instanceof Diagram)
return (Diagram) rootElement;

// failed
}

Any tips are more than welcome.

Regards,
Jelle

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Re: (headless) load domain model from diagram file [message #178958 is a reply to message #178530]

Tue, 25 March 2008 17:45

Alexander Shatalin

Messages: 2928
Registered: July 2009

Senior Member

Hello Jelle,

> Resource resource =
> domain.getResourceSet().getResource(uri.trimFragment(), false);
Try to define new instance of ResourceSetImple and use it instead of the
one created implicitly inside EditingDomain (simply do not use EditingDomain):

ResourceSet resourceSet = new ResourceSetImpl();
Resource resource = resourceSet.getResource(uri.trimFragment(), false);

-----------------
Alex Shatalin

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