CODEWITHSUNDEEP
javaxmleclipse-emf
deeJ
deeJ

Reputation: 672

Parse XML in string format using EMF

I have used EMF to generate XSD-based access functions. I could see how to load input from a disk-file in the examples generated. However, the XML that I want to parse is stored in a string. Is there any way I can proceed without dumping the string into a file and then reading it back?

Upvotes: 2

Views: 1586

Answers (1)

Duncan Krebs
Duncan Krebs

Reputation: 3502

Here is an example method, takes in your modelString and the ECorePackage instance that parses the xml and returns the EObject. 

public static EObject loadEObjectFromString(String myModelXml, EPackage ePackage) throws IOException { 
    // Create a ResourceSet
    ResourceSet resourceSet = new ResourceSetImpl();
    // register XMIRegistryResourceFactoryIml
    resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put
    (Resource.Factory.Registry.DEFAULT_EXTENSION, 
     new XMIResourceFactoryImpl());
     // register your epackage to the resource set so it has a reference to your ecore
     // you can get an instance to your epackage by calling YourEPackageClass.getInstace();
    resourceSet.getPackageRegistry().put(ePackage.getNsURI(), ePackage);
    Resource resource = resourceSet.createResource(URI.createURI("*.modelextension"));
    resource.load(new URIConverter.ReadableInputStream(myModelXml), null);
    // return the root model object and there you have it, all you need is to
    // cast it to the right EObject based on your model 
    return resource.getContents().get(0);
}

Upvotes: 3

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