cdo/bundles/org.eclipse.papyrus.cdo.core/src/org/eclipse/papyrus/cdo/core/resource/PapyrusCDOResourceImpl.java

/*****************************************************************************
 * Copyright (c) 2017, 2020 CEA LIST and others.
 * 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *   CEA LIST - Initial API and implementation
 *   CEA LIST - Bug 566942
 *   
 *****************************************************************************/

package org.eclipse.papyrus.cdo.core.resource;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.eclipse.emf.cdo.common.revision.CDORevision;
import org.eclipse.emf.cdo.eresource.impl.CDOResourceImpl;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.internal.cdo.view.CDOViewImpl.OptionsImpl;
import org.eclipse.emf.spi.cdo.InternalCDOView;
import org.eclipse.uml2.common.util.CacheAdapter;

public class PapyrusCDOResourceImpl extends CDOResourceImpl {

	/**
	 * Set this System property to true to avoid resource DEPTH_INFINITE prefetch.
	 */
	public static final String ORG_ECLIPSE_PAPYRUS_LAZY_CDO_RESOURCE_LOADING = "org.eclipse.papyrus.lazyCDOResourceLoading"; //$NON-NLS-1$

	/**
	 * @see org.eclipse.emf.cdo.eresource.impl.CDOResourceImpl#load(java.util.Map)
	 *
	 * @param options
	 * @throws IOException
	 */
	@Override
	public void load(Map<?, ?> options) throws IOException {
		if (!isLoaded()) {
			Boolean lazy = Boolean.getBoolean(ORG_ECLIPSE_PAPYRUS_LAZY_CDO_RESOURCE_LOADING);
			if (!lazy) {
				cdoPrefetch(CDORevision.DEPTH_INFINITE);

				InternalCDOView cdoView = this.cdoView();

				((OptionsImpl) cdoView.options()).setLockStatePrefetchEnabled(true);

				CacheAdapter cacheAdapter = CacheAdapter.getInstance();
				if (cacheAdapter.getClass() != NonLazyPapyrusCDOCacheAdapter.class) {
					NonLazyPapyrusCDOCacheAdapter.register(new NonLazyPapyrusCDOCacheAdapter());
				}

			}

			super.load(options);

		}
	}

	/**
	 * Constructor.
	 *
	 */
	public PapyrusCDOResourceImpl(URI uri) {
		super(uri);
	}

	/**
	 * @see org.eclipse.emf.cdo.eresource.impl.CDOResourceImpl#getDefaultSaveOptions()
	 * 
	 * @return
	 */
	@Override
	public Map<Object, Object> getDefaultSaveOptions() {
		return new HashMap<Object, Object>();
	}

}