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.Matrix;
027    import org.ujmp.core.exceptions.MatrixException;
028    import org.ujmp.core.interfaces.HasObjectArray;
029    import org.ujmp.core.objectmatrix.stub.AbstractDenseObjectMatrix2D;
030    
031    public class DefaultDenseObjectMatrix2D extends AbstractDenseObjectMatrix2D implements
032                    HasObjectArray {
033            private static final long serialVersionUID = 8929799323811301397L;
034    
035            private Object[] values = null;
036    
037            private long[] size = null;
038    
039            private int rows = 0;
040    
041            private int cols = 0;
042    
043            public DefaultDenseObjectMatrix2D(Matrix m) throws MatrixException {
044                    this.rows = (int) m.getRowCount();
045                    this.cols = (int) m.getColumnCount();
046                    this.size = new long[] { rows, cols };
047                    if (m instanceof DefaultDenseObjectMatrix2D) {
048                            Object[] v = ((DefaultDenseObjectMatrix2D) m).values;
049                            this.values = new Object[v.length];
050                            System.arraycopy(v, 0, this.values, 0, v.length);
051                    } else {
052                            this.values = new Object[rows * cols];
053                            for (long[] c : m.allCoordinates()) {
054                                    setObject(m.getAsObject(c), c);
055                            }
056                    }
057            }
058    
059            public DefaultDenseObjectMatrix2D(long... size) {
060                    this.rows = (int) size[ROW];
061                    this.cols = (int) size[COLUMN];
062                    this.size = new long[] { rows, cols };
063                    this.values = new Object[rows * cols];
064            }
065    
066            public DefaultDenseObjectMatrix2D(Object[] v, int rows, int cols) {
067                    this.rows = rows;
068                    this.cols = cols;
069                    this.size = new long[] { rows, cols };
070                    this.values = v;
071            }
072    
073            public long[] getSize() {
074                    return size;
075            }
076    
077            public long getRowCount() {
078                    return rows;
079            }
080    
081            public long getColumnCount() {
082                    return cols;
083            }
084    
085            public Object getObject(long row, long column) {
086                    return values[(int) (column * rows + row)];
087            }
088    
089            public void setObject(Object value, long row, long column) {
090                    values[(int) (column * rows + row)] = value;
091            }
092    
093            public Object getObject(int row, int column) {
094                    return values[column * rows + row];
095            }
096    
097            public void setObject(Object value, int row, int column) {
098                    values[column * rows + row] = value;
099            }
100    
101            public final Matrix copy() throws MatrixException {
102                    Object[] result = new Object[values.length];
103                    System.arraycopy(values, 0, result, 0, values.length);
104                    Matrix m = new DefaultDenseObjectMatrix2D(result, rows, cols);
105                    if (getAnnotation() != null) {
106                            m.setAnnotation(getAnnotation().clone());
107                    }
108                    return m;
109            }
110    
111            public final Matrix transpose() {
112                    final Object[] result = new Object[cols * rows];
113                    for (int c = rows; --c != -1;) {
114                            for (int r = cols; --r != -1;) {
115                                    result[c * cols + r] = values[r * rows + c];
116                            }
117                    }
118                    return new DefaultDenseObjectMatrix2D(result, cols, rows);
119            }
120    
121            public Object[] getObjectArray() {
122                    return values;
123            }
124    
125    }