public static IQueryResult execute(Resource ecoreResource, String query) {
	System.out.println("Received " + ecoreResource);
	OCL ocl = OCL.newInstance(EcoreEnvironmentFactory.INSTANCE);
	Condition condition;
	IQueryResult results = null;
	try {
		condition = new BooleanOCLCondition<EClassifier, EClass, EObject>(ocl.getEnvironment(),query,null);
		SELECT statement = new SELECT(SELECT.UNBOUNDED, false,
					new FROM(ecoreResource.getContents()), new WHERE((EObjectCondition) condition), new NullProgressMonitor() );
		results = statement.execute();
	} catch (ParserException e) {
		e.printStackTrace();
	}
	return results;
}

public static void main(String[] args) throws IOException {
	// Create a resource set to hold the resources.
	ResourceSet resourceSet = new ResourceSetImpl();
	URI modelUri = URI.createFileURI(new File("model/systemModel.ecore").getAbsolutePath());
	
	EcoreResourceFactoryImpl ecoreFactory = new EcoreResourceFactoryImpl();		
	resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put("ecore", ecoreFactory);
	
	// Register the package to ensure it is available during loading.
	resourceSet.getPackageRegistry().put
		(MancoosiPackage.eNS_URI, 
		 MancoosiPackage.eINSTANCE);
	
	// Demand load resource for this file.
	Resource resource = resourceSet.getResource(modelUri, true);
	System.out.println("Loaded " + modelUri);
	
	IQueryResult res = QueryExecutor.execute(resource, "mancoosi::InstalledPackage.allInstances()->exists(c | c.installedSize > 259)");	
	java.util.Iterator iterator = res.iterator();
	while(iterator.hasNext()) {
		System.out.println(iterator.next().toString());
	}
	System.out.println("SIZE: " + res.size());
	System.out.println("OCL Query execution terminated.");
}

mancoosi.impl.SingleDepImpl@9bfee2 (version: ge, value: 1:0.3-1)
mancoosi.impl.SingleDepImpl@98cbf7 (version: ge, value: 2.3.18)
mancoosi.impl.SingleDepImpl@1deb5f7 (version: ge, value: 0.5)
mancoosi.impl.SingleDepImpl@eb9f58 (version: ge, value: 2.15.4)
mancoosi.impl.FileImpl@17f61bb (name: 70-modules-unload.sh) (extension: null, description: null, size: 0, checkSum: null, isDirectory: false, suid: false, guid: false, permission: -rwxr-xr-x, location: /etc/acpi/suspend.d/70-modules-unload.sh, isMissing: false)
mancoosi.impl.SingleDepImpl@157bf4c (version: ge, value: 2.2.11~dfsg1-3ubuntu2~)
mancoosi.impl.NotInstalledPackageImpl@486d1d (name: xtel) (version: null)
mancoosi.impl.SingleConflictImpl@9b777a (version: llt, value: 22.1-0ubuntu10.1)
mancoosi.impl.FileImpl@101f23d (name: tosh-mute) (extension: null, description: null, size: 0, checkSum: null, isDirectory: false, suid: false, guid: false, permission: -rw-r--r--, location: /etc/acpi/events/tosh-mute, isMissing: false)
mancoosi.impl.SingleConflictImpl@16396f5 (version: le, value: 1.3.0)
mancoosi.impl.AndConflictImpl@9b774e
mancoosi.impl.SingleDepImpl@1eb8f71 (version: ge, value: 0.5.8.1)
mancoosi.impl.SingleDepImpl@11c9fcc (version: ge, value: 1:1.0.0)
mancoosi.impl.AndDepImpl@126cdd1
mancoosi.impl.SingleDepImpl@1eb8f6d (version: eq, value: null)
mancoosi.impl.FileImpl@d4927f (name: text.fr-2007.tbl) (extension: null, description: null, size: 0, checkSum: null, isDirectory: false, suid: false, guid: false, permission: -rw-r--r--, location: /etc/brltty/text.fr-2007.tbl, isMissing: false)
mancoosi.impl.SingleConflictImpl@1f4c4a3 (version: eq, value: null)
mancoosi.impl.SingleDepImpl@8c2d23 (version: eq, value: null)
mancoosi.impl.SingleDepImpl@9c87c1 (version: ge, value: 1:2.17.90)
SIZE: 15631
OCL Query execution terminated.