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; 037 038 public class DefaultSparseColumnObjectMatrix2D extends AbstractSparseObjectMatrix2D implements 039 Wrapper<Map<Long, Matrix>> { 040 private static final long serialVersionUID = -1943118812754494387L; 041 042 private long[] size = new long[] { 1, 1 }; 043 044 private Map<Long, Matrix> columns = new HashMap<Long, Matrix>(); 045 046 public DefaultSparseColumnObjectMatrix2D(long... size) { 047 setSize(size); 048 } 049 050 public DefaultSparseColumnObjectMatrix2D(Matrix m) { 051 setSize(m.getSize()); 052 for (long[] c : m.availableCoordinates()) { 053 setObject(m.getAsObject(c), c); 054 } 055 } 056 057 public Object getObject(long row, long column) throws MatrixException { 058 Matrix m = columns.get(column); 059 return m == null ? null : m.getAsObject(row, 0); 060 } 061 062 public Object getObject(int row, int column) throws MatrixException { 063 Matrix m = columns.get(column); 064 return m == null ? null : m.getAsObject(row, 0); 065 } 066 067 // TODO: this is certainly not the optimal way to do it! 068 069 public Iterable<long[]> availableCoordinates() { 070 List<long[]> coordinates = new ArrayList<long[]>(); 071 for (Long i : columns.keySet()) { 072 Matrix m = columns.get(i); 073 for (long[] c : m.availableCoordinates()) { 074 coordinates.add(Coordinates.plus(c, new long[] { 0, i })); 075 } 076 } 077 return coordinates; 078 } 079 080 public boolean contains(long... coordinates) { 081 if (Coordinates.isSmallerThan(coordinates, size)) { 082 return getObject(coordinates) != null; 083 } else { 084 return false; 085 } 086 } 087 088 public void setObject(Object o, long row, long column) throws MatrixException { 089 Matrix m = columns.get(column); 090 if (m == null) { 091 // TODO: there should be a faster implementation than this: 092 m = new DefaultSparseObjectMatrix(getRowCount(), 1); 093 columns.put(column, m); 094 } 095 m.setAsObject(o, row, 0); 096 } 097 098 public void setObject(Object o, int row, int column) throws MatrixException { 099 setObject(o, (long) row, (long) column); 100 } 101 102 public long[] getSize() { 103 return size; 104 } 105 106 public void setSize(long... size) { 107 if (this.size[ROW] != size[ROW]) { 108 for (Matrix m : columns.values()) { 109 m.setSize(size[ROW], 1); 110 } 111 } 112 this.size = size; 113 } 114 115 public Matrix getColumn(long column) { 116 return columns.get((int) column); 117 } 118 119 public Matrix max(Ret returnType, int dimension) throws MatrixException { 120 if (returnType == Ret.NEW) { 121 122 if (dimension == ROW) { 123 Matrix ret = Matrix.factory.zeros(1, getColumnCount()); 124 for (long[] c : availableCoordinates()) { 125 double v = getAsDouble(c); 126 if (v > ret.getAsDouble(0, c[COLUMN])) { 127 ret.setAsDouble(v, 0, c[COLUMN]); 128 } 129 } 130 return ret; 131 } else if (dimension == COLUMN) { 132 Matrix ret = Matrix.factory.zeros(getRowCount(), 1); 133 for (long[] c : availableCoordinates()) { 134 double v = getAsDouble(c); 135 if (v > ret.getAsDouble(c[ROW], 0)) { 136 ret.setAsDouble(v, c[ROW], 0); 137 } 138 } 139 return ret; 140 } 141 142 } 143 throw new MatrixException("not supported"); 144 } 145 146 public Matrix selectColumns(Ret returnType, long... columns) throws MatrixException { 147 if (returnType == Ret.LINK && columns.length == 1) { 148 return getColumn(columns[0]); 149 } 150 return super.selectColumns(returnType, columns); 151 } 152 153 public Map<Long, Matrix> getWrappedObject() { 154 return columns; 155 } 156 157 public void setWrappedObject(Map<Long, Matrix> object) { 158 this.columns = object; 159 } 160 161 }