/*******************************************************************************
* Copyright (c) 2006-2012
* Software Technology Group, Dresden University of Technology
* DevBoost GmbH, Berlin, Amtsgericht Charlottenburg, HRB 140026
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Software Technology Group - TU Dresden, Germany;
* DevBoost GmbH - Berlin, Germany
* - initial API and implementation
******************************************************************************/
package org.reuseware.coconut.resource.sokan;
import java.util.List;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.reuseware.coconut.fragment.Fragment;
import org.reuseware.coconut.resource.FragmentCompositionInterfaceCreator;
import org.reuseware.sokan.index.util.ResourceUtil;
/**
* A fragment composition interface creator that loads
* the cached interface from the index. The interfaces
* are initially created an and cached by the
* FragmentCompositionInterfaceGenerator indexer.
*/
public class SokanFragmentCompositionInterfaceCreator implements
FragmentCompositionInterfaceCreator {
/**
* @param ufi ID of the fragment for which to compute the composition interface
* @param resourceSet resource set for loading resources
* @return the computed composition interface
*/
public Fragment getFragment(List<String> ufi, ResourceSet resourceSet) {
String idString = ResourceUtil.idString(ufi);
if (idString == null || "".equals(idString) || "/".equals(idString)) {
return null;
}
URI compositionInterfaceURI =
URI.createURI("reuseware:" + idString);
Resource resource = resourceSet.getResource(compositionInterfaceURI, true);
if (resource != null && !resource.getContents().isEmpty()
&& resource.getContents().get(0) instanceof Fragment) {
return (Fragment) resource.getContents().get(0);
}
return null;
}
}