001 /* 002 * Copyright (C) 2008-2010 by Holger Arndt 003 * 004 * This file is part of the Universal Java Matrix Package (UJMP). 005 * See the NOTICE file distributed with this work for additional 006 * information regarding copyright ownership and licensing. 007 * 008 * UJMP is free software; you can redistribute it and/or modify 009 * it under the terms of the GNU Lesser General Public License as 010 * published by the Free Software Foundation; either version 2 011 * of the License, or (at your option) any later version. 012 * 013 * UJMP is distributed in the hope that it will be useful, 014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 016 * GNU Lesser General Public License for more details. 017 * 018 * You should have received a copy of the GNU Lesser General Public 019 * License along with UJMP; if not, write to the 020 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 021 * Boston, MA 02110-1301 USA 022 */ 023 024 package org.ujmp.core.objectmatrix.calculation; 025 026 import org.ujmp.core.Matrix; 027 import org.ujmp.core.exceptions.MatrixException; 028 import org.ujmp.core.setmatrix.DefaultSetMatrix; 029 import org.ujmp.core.setmatrix.SetMatrix; 030 031 public class Unique extends AbstractObjectCalculation { 032 private static final long serialVersionUID = -5621298156781794790L; 033 034 private SetMatrix<Object> uniqueObjects = null; 035 036 public Unique(Matrix m) { 037 super(m); 038 } 039 040 041 public Object getObject(long... coordinates) throws MatrixException { 042 createUniqueObjects(); 043 return uniqueObjects.getAsObject(coordinates); 044 } 045 046 private void createUniqueObjects() { 047 if (uniqueObjects == null) { 048 uniqueObjects = new DefaultSetMatrix<Object>(); 049 for (long[] c : getSource().availableCoordinates()) { 050 uniqueObjects.add(getSource().getAsObject(c)); 051 } 052 } 053 } 054 055 056 public long[] getSize() { 057 createUniqueObjects(); 058 return uniqueObjects.getSize(); 059 } 060 061 }