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 org.ujmp.core.Coordinates;
027    import org.ujmp.core.Matrix;
028    import org.ujmp.core.exceptions.MatrixException;
029    import org.ujmp.core.objectmatrix.stub.AbstractDenseObjectMatrix;
030    import org.ujmp.core.util.MathUtil;
031    
032    public class DefaultDenseObjectMatrixMultiD extends AbstractDenseObjectMatrix {
033            private static final long serialVersionUID = 4312852021159459897L;
034    
035            private Object[] values = null;
036    
037            private long[] size = null;
038    
039            private int length = 0;
040    
041            public DefaultDenseObjectMatrixMultiD(Matrix m) throws MatrixException {
042                    this.size = Coordinates.copyOf(m.getSize());
043                    this.length = (int) Coordinates.product(size);
044                    this.values = new Object[length];
045                    if (m instanceof DefaultDenseObjectMatrixMultiD) {
046                            Object[] v = ((DefaultDenseObjectMatrixMultiD) m).values;
047                            System.arraycopy(v, 0, this.values, 0, v.length);
048                    } else {
049                            for (long[] c : m.allCoordinates()) {
050                                    setObject(m.getAsObject(c), c);
051                            }
052                    }
053            }
054    
055            public DefaultDenseObjectMatrixMultiD(long... size) {
056                    this.size = Coordinates.copyOf(size);
057                    this.length = (int) Coordinates.product(size);
058                    this.values = new Object[length];
059            }
060    
061            public DefaultDenseObjectMatrixMultiD(Object[] v, long... size) {
062                    this.size = Coordinates.copyOf(size);
063                    this.length = (int) Coordinates.product(size);
064                    this.values = v;
065            }
066    
067            public final long[] getSize() {
068                    return size;
069            }
070    
071            public final Object getObject(long... pos) {
072                    return values[(int) MathUtil.pos2IndexRowMajor(size, pos)];
073            }
074    
075            public final void setObject(Object value, long... pos) {
076                    values[(int) MathUtil.pos2IndexRowMajor(size, pos)] = value;
077            }
078    
079    }