org.eclipse.xtext.ecore.EcoreResourceDescriptionStrategy.java Source code

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Here is the source code for org.eclipse.xtext.ecore.EcoreResourceDescriptionStrategy.java

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/*******************************************************************************
 * 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
 *******************************************************************************/
package org.eclipse.xtext.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 EcoreResourceDescriptionStrategy extends DefaultResourceDescriptionStrategy {

    private static final Logger LOG = Logger.getLogger(EcoreResourceDescriptionStrategy.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) {
                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);
                return true;
            }
        } catch (Exception exc) {
            LOG.error(exc.getMessage(), exc);
        }
        return false;
    }

}