org.eclipse.osbp.bpmn2.ecore/src/org/eclipse/osbp/bpmn2/ecore/BPMnResourceDescriptionStrategy.java

/*******************************************************************************
 * Copyright (c) 2011 itemis AG (http://www.itemis.eu) and others.
 * 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:
 *     Sebastian Zarnekow - Initial contribution and API
 *     Christophe Loetz (Loetz GmbH&Co.KG) - integration in and adaption to OSBP project                                                       
 *******************************************************************************/

package org.eclipse.osbp.bpmn2.ecore;

import java.util.Map;

import org.apache.log4j.Logger;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.xtext.naming.IQualifiedNameProvider;
import org.eclipse.xtext.naming.QualifiedName;
import org.eclipse.xtext.resource.EObjectDescription;
import org.eclipse.xtext.resource.IEObjectDescription;
import org.eclipse.xtext.resource.impl.DefaultResourceDescriptionStrategy;
import org.eclipse.xtext.util.IAcceptor;

import com.google.common.collect.Maps;
import com.google.inject.Inject;
import com.google.inject.Singleton;

/**
 * @author Sebastian Zarnekow - Initial contribution and API
 */
@Singleton
public class BPMnResourceDescriptionStrategy extends
		DefaultResourceDescriptionStrategy {

	private static final Logger LOG = Logger
			.getLogger(BPMnResourceDescriptionStrategy.class);

	public static final String NS_URI_INDEX_ENTRY = "nsURI";

	@Inject
	private NsURIQualifiedNameProvider nsURIQualifiedNameProvider;

	@Override
	public boolean createEObjectDescriptions(EObject eObject,
			IAcceptor<IEObjectDescription> acceptor) {
		boolean isProcessContents = createEObjectDescriptions(
				getQualifiedNameProvider(), false, eObject, acceptor);
		// isProcessContents |=
		// createEObjectDescriptions(nsURIQualifiedNameProvider, true, eObject,
		// acceptor);
		return isProcessContents;
	}

	protected boolean createEObjectDescriptions(
			IQualifiedNameProvider qualifiedNameProvider, boolean isNsURI,
			EObject eObject, IAcceptor<IEObjectDescription> acceptor) {
		try {
			QualifiedName qualifiedName = qualifiedNameProvider
					.getFullyQualifiedName(eObject);
			if (qualifiedName != null) {
				qualifiedName = BPMnQualifiedNameProvider.beautity(qualifiedName);
				if	(!qualifiedName.isEmpty()) {
					Map<String, String> userData = Maps
							.newHashMapWithExpectedSize(1);
					userData.put(NS_URI_INDEX_ENTRY, Boolean.toString(isNsURI));
					IEObjectDescription description = EObjectDescription.create(
							qualifiedName, eObject, userData);
					acceptor.accept(description);

					LOG.debug("Created BPMn-EObjectDescription "
							+ eObject.eClass().getName()+": "
							+ description.getQualifiedName());
				}
				return true;
			}
		} catch (Exception exc) {
			LOG.error(exc.getMessage(), exc);
		}
		return false;
	}

}