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.commonsmath;
025    
026    import org.apache.commons.math.linear.Array2DRowRealMatrix;
027    import org.apache.commons.math.linear.BlockRealMatrix;
028    import org.apache.commons.math.linear.RealMatrix;
029    import org.ujmp.core.Matrix;
030    import org.ujmp.core.doublematrix.DenseDoubleMatrix2D;
031    import org.ujmp.core.doublematrix.factory.AbstractDoubleMatrix2DFactory;
032    import org.ujmp.core.exceptions.MatrixException;
033    
034    public class CommonsMathDenseDoubleMatrix2DFactory extends
035                    AbstractDoubleMatrix2DFactory {
036            private static final long serialVersionUID = -4938756141859017575L;
037    
038            public static final CommonsMathDenseDoubleMatrix2DFactory INSTANCE = new CommonsMathDenseDoubleMatrix2DFactory();
039    
040            public DenseDoubleMatrix2D zeros(long rows, long columns)
041                            throws MatrixException {
042                    return new CommonsMathArrayDenseDoubleMatrix2D(rows, columns);
043            }
044    
045            public DenseDoubleMatrix2D dense(Array2DRowRealMatrix matrix)
046                            throws MatrixException {
047                    return new CommonsMathArrayDenseDoubleMatrix2D(matrix);
048            }
049    
050            public DenseDoubleMatrix2D dense(BlockRealMatrix matrix)
051                            throws MatrixException {
052                    return new CommonsMathBlockDenseDoubleMatrix2D(matrix);
053            }
054    
055            public Matrix dense(RealMatrix matrix) {
056                    if (matrix == null) {
057                            throw new MatrixException("matrix is null");
058                    } else if (matrix instanceof BlockRealMatrix) {
059                            return dense((BlockRealMatrix) matrix);
060                    } else if (matrix instanceof Array2DRowRealMatrix) {
061                            return dense((Array2DRowRealMatrix) matrix);
062                    } else {
063                            throw new MatrixException("implementation not available: "
064                                            + matrix.getClass());
065                    }
066            }
067    
068    }