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/*******************************************************************************
 * Copyright (c) 2011 Tasktop Technologies 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:
 *     Tasktop Technologies - initial API and implementation
 *******************************************************************************/

package org.eclipse.mylyn.internal.gerrit.core.operations;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.SubMonitor;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.mylyn.internal.gerrit.core.GerritCorePlugin;
import org.eclipse.mylyn.internal.gerrit.core.client.GerritClient;
import org.eclipse.mylyn.internal.gerrit.core.client.GerritException;

/**
 * @author Steffen Pingel
 */
public class GerritOperation<T> extends Job {

	private final GerritClient client;

	private final AbstractRequest<T> request;

	private T operationResult;

	public GerritOperation(String name, GerritClient client, AbstractRequest<T> request) {
		super(name);
		this.client = client;
		this.request = request;
	}

	@Override
	public IStatus run(IProgressMonitor monitor) {
		SubMonitor.convert(monitor);
		try {
			execute(monitor);
		} catch (OperationCanceledException e) {
			return Status.CANCEL_STATUS;
		} catch (GerritException e) {
			return new Status(IStatus.ERROR, GerritCorePlugin.PLUGIN_ID, "Operation Failed: " + e.getMessage(), e);
		}
		return Status.OK_STATUS;
	}

	protected void execute(IProgressMonitor monitor) throws GerritException {
		this.operationResult = request.execute(client, monitor);
	}

	public T getOperationResult() {
		return operationResult;
	}

}

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