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/*******************************************************************************
 * Copyright (c) 2010-2011 Composent, Inc. 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:
 *   Composent, Inc. - initial API and implementation
 ******************************************************************************/
package org.eclipse.ecf.osgi.services.remoteserviceadmin;

import org.eclipse.core.runtime.Assert;
import org.eclipse.ecf.remoteservice.IRemoteServiceRegistration;
import org.osgi.framework.ServiceReference;

public class ExportRegistration implements
		org.osgi.service.remoteserviceadmin.ExportRegistration {

	private IRemoteServiceRegistration rsRegistration;
	private ExportReference exportReference;

	private Throwable throwable;

	private final Object closeLock = new Object();

	public ExportRegistration(IRemoteServiceRegistration rsRegistration,
			ServiceReference serviceReference,
			EndpointDescription endpointDescription) {
		Assert.isNotNull(rsRegistration);
		this.rsRegistration = rsRegistration;
		this.exportReference = new ExportReference(serviceReference,
				endpointDescription);
	}

	public ExportRegistration(Throwable t) {
		this.throwable = t;
	}

	public org.osgi.service.remoteserviceadmin.ExportReference getExportReference() {
		synchronized (closeLock) {
			Throwable t = getException();
			if (t != null)
				throw new IllegalStateException(
						"Cannot get export reference as registration not properly initialized",
						t);
			return exportReference;
		}
	}

	public boolean matchesServiceReference(ServiceReference serviceReference) {
		if (serviceReference == null)
			return false;
		synchronized (closeLock) {
			if (exportReference == null)
				return false;
			ServiceReference sr = exportReference.getExportedService();
			if (sr.equals(serviceReference))
				return true;
			else
				return false;
		}
	}

	public IRemoteServiceRegistration getRemoteServiceRegistration() {
		return rsRegistration;
	}

	public void close() {
		synchronized (closeLock) {
			if (rsRegistration != null) {
				rsRegistration.unregister();
				rsRegistration = null;
			}
			if (exportReference != null) {
				exportReference.close();
				exportReference = null;
			}
			throwable = null;
		}
	}

	public Throwable getException() {
		synchronized (closeLock) {
			return throwable;
		}
	}

	public String toString() {
		synchronized (closeLock) {
			return "ExportRegistration[rsRegistration=" + rsRegistration
					+ ", exportReference=" + exportReference + ", throwable="
					+ throwable + "]";
		}
	}

}

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