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.Map; 027 028 import org.ujmp.core.Coordinates; 029 import org.ujmp.core.Matrix; 030 import org.ujmp.core.collections.SoftHashMap; 031 import org.ujmp.core.exceptions.MatrixException; 032 import org.ujmp.core.objectmatrix.stub.AbstractSparseObjectMatrix; 033 import org.ujmp.core.util.CoordinateSetToLongWrapper; 034 035 public class VolatileSparseObjectMatrix extends AbstractSparseObjectMatrix { 036 private static final long serialVersionUID = 392817709394048419L; 037 038 private final Map<Coordinates, Object> values = new SoftHashMap<Coordinates, Object>(); 039 040 private long[] size = null; 041 042 public VolatileSparseObjectMatrix(Matrix m) throws MatrixException { 043 this.size = Coordinates.copyOf(m.getSize()); 044 for (long[] c : m.allCoordinates()) { 045 setAsDouble(m.getAsDouble(c), c); 046 } 047 } 048 049 public boolean isTransient() { 050 return true; 051 } 052 053 public VolatileSparseObjectMatrix(long... size) { 054 this.size = Coordinates.copyOf(size); 055 } 056 057 public long[] getSize() { 058 return size; 059 } 060 061 public Object getObject(long... coordinates) { 062 return values.get(new Coordinates(coordinates)); 063 } 064 065 public long getValueCount() { 066 return values.size(); 067 } 068 069 public void setObject(Object value, long... coordinates) { 070 values.put(new Coordinates(coordinates), value); 071 } 072 073 public Iterable<long[]> entries() { 074 return new CoordinateSetToLongWrapper(values.keySet()); 075 } 076 077 public boolean contains(long... coordinates) { 078 return values.containsKey(new Coordinates(coordinates)); 079 } 080 081 }