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 }