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.impl; 025 026 import java.util.ArrayList; 027 import java.util.HashMap; 028 import java.util.List; 029 import java.util.Map; 030 031 import org.ujmp.core.Coordinates; 032 import org.ujmp.core.Matrix; 033 import org.ujmp.core.calculation.Calculation.Ret; 034 import org.ujmp.core.exceptions.MatrixException; 035 import org.ujmp.core.interfaces.Wrapper; 036 import org.ujmp.core.objectmatrix.stub.AbstractSparseObjectMatrix2D; 037 import org.ujmp.core.util.MathUtil; 038 039 public class DefaultSparseRowObjectMatrix2D extends AbstractSparseObjectMatrix2D implements 040 Wrapper<Map<Long, Matrix>> { 041 private static final long serialVersionUID = -5291604525500706427L; 042 043 private long[] size = new long[] { 1, 1 }; 044 045 private Map<Long, Matrix> rows = new HashMap<Long, Matrix>(); 046 047 public DefaultSparseRowObjectMatrix2D(long... size) { 048 setSize(size); 049 } 050 051 public DefaultSparseRowObjectMatrix2D(Matrix m) { 052 setSize(m.getSize()); 053 for (long[] c : m.availableCoordinates()) { 054 setObject(m.getAsObject(c), c); 055 } 056 } 057 058 public Object getObject(long row, long column) throws MatrixException { 059 Matrix m = rows.get(row); 060 return m == null ? null : m.getAsObject(0, column); 061 } 062 063 public Object getObject(int row, int column) throws MatrixException { 064 Matrix m = rows.get(row); 065 return m == null ? null : m.getAsObject(0, column); 066 } 067 068 // TODO: this is certainly not the optimal way to do it! 069 070 public Iterable<long[]> availableCoordinates() { 071 List<long[]> coordinates = new ArrayList<long[]>(); 072 for (Long r : rows.keySet()) { 073 Matrix m = rows.get(r); 074 for (long[] c : m.availableCoordinates()) { 075 coordinates.add(Coordinates.plus(c, new long[] { r, 0 })); 076 } 077 } 078 return coordinates; 079 } 080 081 public boolean contains(long... coordinates) { 082 if (Coordinates.isSmallerThan(coordinates, size)) { 083 return getObject(coordinates) != null; 084 } else { 085 return false; 086 } 087 } 088 089 public double getAsDouble(long... coordinates) throws MatrixException { 090 return MathUtil.getDouble(getObject(coordinates)); 091 } 092 093 public void setAsDouble(double value, long... coordinates) throws MatrixException { 094 setObject(value, coordinates); 095 } 096 097 public void setObject(Object o, long row, long column) throws MatrixException { 098 Matrix m = rows.get(row); 099 if (m == null) { 100 // TODO: there should be a faster implementation than this: 101 m = new DefaultSparseObjectMatrix((long) 1, getColumnCount()); 102 rows.put(row, m); 103 } 104 m.setAsObject(o, 0, column); 105 } 106 107 public void setObject(Object o, int row, int column) throws MatrixException { 108 setObject(o, (long) row, (long) column); 109 } 110 111 public long[] getSize() { 112 return size; 113 } 114 115 public void setSize(long... size) { 116 if (this.size[COLUMN] != size[COLUMN]) { 117 for (Matrix m : rows.values()) { 118 m.setSize(1, size[COLUMN]); 119 } 120 } 121 this.size = size; 122 } 123 124 public Matrix getRow(long row) { 125 return rows.get(row); 126 } 127 128 public Matrix max(Ret returnType, int dimension) throws MatrixException { 129 if (returnType == Ret.NEW) { 130 131 if (dimension == ROW) { 132 Matrix ret = Matrix.factory.zeros(1, getColumnCount()); 133 for (long[] c : availableCoordinates()) { 134 double v = getAsDouble(c); 135 if (v > ret.getAsDouble(0, c[COLUMN])) { 136 ret.setAsDouble(v, 0, c[COLUMN]); 137 } 138 } 139 return ret; 140 } else if (dimension == COLUMN) { 141 Matrix ret = Matrix.factory.zeros(getRowCount(), 1); 142 for (long[] c : availableCoordinates()) { 143 double v = getAsDouble(c); 144 if (v > ret.getAsDouble(c[ROW], 0)) { 145 ret.setAsDouble(v, c[ROW], 0); 146 } 147 } 148 return ret; 149 } 150 151 } 152 throw new MatrixException("not supported"); 153 } 154 155 public Matrix selectRows(Ret returnType, long... rows) throws MatrixException { 156 if (returnType == Ret.LINK && rows.length == 1) { 157 return getRow(rows[0]); 158 } 159 return super.selectRows(returnType, rows); 160 } 161 162 public Map<Long, Matrix> getWrappedObject() { 163 return rows; 164 } 165 166 public void setWrappedObject(Map<Long, Matrix> object) { 167 this.rows = object; 168 } 169 170 }