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 java.util.HashSet; 027 import java.util.Set; 028 029 import org.ujmp.core.Matrix; 030 import org.ujmp.core.exceptions.MatrixException; 031 032 public class UniqueValueCount extends AbstractObjectCalculation { 033 private static final long serialVersionUID = -5621298156781794790L; 034 035 public UniqueValueCount(Matrix m, int dimension) { 036 super(dimension, m); 037 } 038 039 public Object getObject(long... coordinates) throws MatrixException { 040 Set<Object> set = new HashSet<Object>(); 041 switch (getDimension()) { 042 case ROW: 043 for (int r = 0; r < getSource().getRowCount(); r++) { 044 set.add(getSource().getAsObject(r, coordinates[COLUMN])); 045 } 046 return set.size(); 047 case COLUMN: 048 for (int c = 0; c < getSource().getColumnCount(); c++) { 049 set.add(getSource().getAsObject(coordinates[ROW], c)); 050 } 051 return set.size(); 052 default: 053 for (long[] c : getSource().availableCoordinates()) { 054 set.add(getSource().getAsObject(c)); 055 } 056 return set.size(); 057 } 058 } 059 060 public long[] getSize() { 061 switch (getDimension()) { 062 case ROW: 063 return new long[] { 1, getSource().getColumnCount() }; 064 case COLUMN: 065 return new long[] { getSource().getRowCount(), 1 }; 066 default: 067 return new long[] { 1, 1 }; 068 } 069 } 070 071 }