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Parsing .ecore files present in a jar file [message #1851694]

Tue, 12 April 2022 10:13

Eclipse User

Hi,

Let's say I have a jar called A.jar. This jar contains a .ecore file at location model/ecorefile.ecore

I have another program in which i want to parse this ecore file.

I have come across this code,

ResourceSet resourceSet = new ResourceSetImpl();

resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put( "ecore", new EcoreResourceFactoryImpl());

URI myEcoreURI = URI.createFileURI(ecoreFilePath);
Resource myEcoreResource = resourceSet.getResource(myEcoreURI, true);
Iterator<EObject> i = myEcoreResource.getAllContents();

This works fine if the ecoreFilePath is of a non-jar location(physical location of the file).

I'd like to know how can one parse this ecore file within the jar.

More precisely, what should be the value of ecoreFilePath for a file present inside of a jar.

Any help will be highly appreciated.

Re: Parsing .ecore files present in a jar file [message #1851706 is a reply to message #1851694]

Wed, 13 April 2022 02:32

Eclipse User

Hi, your question should have been, which URI do I need to load the model.

When the model is in a file, you can use the 'file:/<path>' URI, created with URI.createFileURI, e.g., 'file:/path/to/folder/model/ecorefile.ecore'.

In an Eclipse context models can be loaded from projects in the workspace and installed plugins, with 'platform:/resource/<project>/<path>' and 'platform:/plugin/<plugin>/<path/' uris, e.g. 'platform:/plugin/myplugin.example.org/model/ecorefile.ecore'

When you want to directly load the model from a jar, the 'archive:file:/<location-of-plugin-jar>!/<path>' or 'jar:file:/<location-of-plugin-jar>!/<path>' can be used, e.g. 'jar:file:/path/to/myjar.jar!/model/ecorefile.ecore'.

Re: Parsing .ecore files present in a jar file [message #1851709 is a reply to message #1851706]

Wed, 13 April 2022 03:54

Eclipse User

Yes, the question is kind of context dependent. If you're running stand-alone then the jar:file URI approach is needed. If you're running in an Eclipse application you can use a simpler approach but even here there are variations to consider. A platform:/plugin URI will load the resource from a plugin installed in the running IDE itself. More often what one wants are the development time versions of the models. The EcoreEditor, for example, does this:

  public static ResourceSet createResourceSet()
  {
    ResourceSet result = new ResourceSetImpl();
    result.getURIConverter().getURIMap().putAll(EcorePlugin.computePlatformURIMap(true));
    return result;    
  }

This ensures that you can use platform:/resource URIs even for Ecore models that are in the target platform. I.e., this maps the physical locations of the jars or folders in the target platform to platform resource URIs that make it appear is if you've imported those into the workspace as projects.

Re: Parsing .ecore files present in a jar file [message #1855371 is a reply to message #1851709]

Mon, 10 October 2022 21:28

Eclipse User

Are you running standalone? How did you load the sysml resources.
I've seen several threads on the issue without a working solution.
I can load the profiles but when I try to apply a stereotype I get stereotype "SysML::Block" has no Ecore definition

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