@Inject
ResourceDescriptionsProvider resourceDescriptionsProvider;

Resource res = ex.eResource();
IResourceDescriptions index = resourceDescriptionsProvider.getResourceDescriptions(ex.eResource());

IResourceDescription descr = index.getResourceDescription(myResource.getURI());
EObject object = null;
for(IContainer visibleContainer: manager.getVisibleContainers(descr, index)) {
for(IResourceDescription visibleResourceDesc: visibleContainer.getResourceDescriptions()) {
	System.out.println(visibleResourceDesc.getURI());
	}

	for (IEObjectDescription od : visibleContainer.getExportedObjectsByType(PooslPackage.Literals.DATA_METHOD_CALL)) {
	DataMethodCall sodModel = (DataMethodCall) od.getEObjectOrProxy();
		object = EcoreUtil2.resolve(sodModel, myResource);
			}
		}
}

public class PooslTypeSystem extends PooslSwitch<String>{

public String getType(EObject eObject) {
		String result = doSwitch(eObject);
		if (result == null)
			result = new String("");

		return result;
	}
....

@Inject
    ResourceDescriptionsProvider resourceDescriptionsProvider;

@Override
	public String casePrimaryExpression(PrimaryExpression ex)
	{

		List<DataMethodCall> methodCalls = ex.getMethodCall();
		String primaryType = getType(ex.getPrimary());
		Resource res = ex.eResource();
		IResourceDescriptions index = resourceDescriptionsProvider.getResourceDescriptions(ex.eResource());

                for(DataMethodCall method: methodCalls)
		{
		DataMethod returnMethod = listVisibleResources(res, index);		
		}

}

@Inject
IContainer.Manager containerManager;

public void listVisibleResources(
        Resource myResource, IResourceDescriptions index) {
  IResourceDescription descr = 
        index.getResourceDescription(myResource.getURI());
  for(IContainer visibleContainer: manager.getVisibleContainers(descr)) { 
    for(IResourceDescription visibleResourceDesc:
            visibleContainer.getResourceDescription()) { 
      System.out.println(visibleResourceDesc.getURI());
    }
  }
}

X x = new X(argFoo, argBar);
injector.injectMembers(x);