SerializedExtendedTransactionComparator.java

/*******************************************************************************
 * gMix open source project - https://svs.informatik.uni-hamburg.de/gmix/
 * Copyright (C) 2014  SVS
 *
 * This program is free software: you can redistribute it and/or modify 
 * it under the terms of the GNU General Public License as published by 
 * the Free Software Foundation, either version 3 of the License, or 
 * (at your option) any later version.
 *  
 * This program is distributed in the hope that it will be useful, 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of 
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License 
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *******************************************************************************/
package staticContent.evaluation.traceParser.engine.comparator;

import java.util.Comparator;

public class SerializedExtendedTransactionComparator implements Comparator<String> {


	/**
	 * Returns a negative integer, zero, or a positive integer as the first 
	 * argument is less than, equal to, or greater than the second.
	 * 
	 * Note: this comparator imposes orderings that are inconsistent with 
	 * equals. This comparator will only compare the "offsetFromStartOfTrace" 
	 * (see class ExtendedTransaction).
	 */
	@Override
	public int compare(String s1, String s2) {
		String offset1AsString = null;
		offset1AsString = s1.substring(0, s1.indexOf(';'));
		String offset2AsString = s2.substring(0, s2.indexOf(';'));
		long offset1 = Long.parseLong(offset1AsString);
		long offset2 = Long.parseLong(offset2AsString);
        return	(offset1 == offset2 ?  0 :		// Values are equal
            	(offset1 < offset2 ? -1 :		// (-0.0, 0.0) or (!NaN, NaN)
            	1));							// (0.0, -0.0) or (NaN, !NaN)
	}
	
}