content: /*******************************************************************************
   * Copyright (c) 2009, 2019 Mountainminds GmbH & Co. KG and Contributors
   * 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:
   *    Marc R. Hoffmann - initial API and implementation
   *    
   *******************************************************************************/
  package org.jacoco.core.data;
  
  /**
   * Data object describing a session which was the source of execution data.
   * {@link SessionInfo} instances can be sorted by dump date through the
   * {@link Comparable} interface.
   */
  public class SessionInfo implements Comparable<SessionInfo> {
  
  	private final String id;
  
  	private final long start;
  
  	private final long dump;
  
  	/**
  	 * Create a immutable session info with the given data.
  	 * 
  	 * @param id
  	 *            arbitrary session identifier, must not be <code>null</code>
  	 * @param start
  	 *            the epoc based time stamp when execution data recording has
  	 *            been started
  	 * @param dump
  	 *            the epoc based time stamp when execution data was collected
  	 */
  	public SessionInfo(final String id, final long start, final long dump) {
  		if (id == null) {
  			throw new IllegalArgumentException();
  		}
  		this.id = id;
  		this.start = start;
  		this.dump = dump;
  	}
  
  	/**
  	 * @return identifier for this session
  	 */
  	public String getId() {
  		return id;
  	}
  
  	/**
  	 * @return the epoc based time stamp when execution data recording has been
  	 *         started
  	 */
  	public long getStartTimeStamp() {
  		return start;
  	}
  
  	/**
  	 * @return the epoc based time stamp when execution data was collected
  	 */
  	public long getDumpTimeStamp() {
  		return dump;
  	}
  
  	public int compareTo(final SessionInfo other) {
  		if (this.dump < other.dump) {
  			return -1;
  		}
  		if (this.dump > other.dump) {
  			return +1;
  		}
  		return 0;
  	}
  
  	@Override
  	public String toString() {
  		return "SessionInfo[" + id + "]";
  	}
  }
  