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• ArbitraryRankComparator.java

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net.sf.jasperreports.crosstabs.fill.calculation.ArbitraryRankComparator Maven / Gradle / Ivy

/*
 * JasperReports - Free Java Reporting Library.
 * Copyright (C) 2001 - 2019 TIBCO Software Inc. All rights reserved.
 * http://www.jaspersoft.com
 *
 * Unless you have purchased a commercial license agreement from Jaspersoft,
 * the following license terms apply:
 *
 * This program is part of JasperReports.
 *
 * JasperReports is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * JasperReports 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with JasperReports. If not, see .
 */
package net.sf.jasperreports.crosstabs.fill.calculation;

import java.util.Comparator;

import org.apache.commons.collections4.map.ReferenceMap;

import net.sf.jasperreports.engine.JRRuntimeException;

/**
 * A comparator that assigns arbitrary ranks to objects and uses the ranks
 * to impose an arbitrary order on them.
 * 
 * @author Lucian Chirita ([email protected])
 */
public class ArbitraryRankComparator implements Comparator