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.jblas;
025    
026    import java.util.ArrayList;
027    import java.util.Collection;
028    import java.util.List;
029    
030    import org.jblas.DoubleMatrix;
031    import org.ujmp.core.util.AbstractPlugin;
032    
033    public class Plugin extends AbstractPlugin {
034    
035            private final List<Object> dependencies = new ArrayList<Object>();
036    
037            private final List<String> neededClasses = new ArrayList<String>();
038    
039            public Plugin() {
040                    dependencies.add("ujmp-core");
041                    dependencies.add("jblas.jar");
042                    neededClasses.add("org.jblas.DoubleMatrix");
043            }
044    
045            public String getDescription() {
046                    return "interface to JBlas";
047            }
048    
049            public Collection<Object> getDependencies() {
050                    return dependencies;
051            }
052    
053            public Collection<String> getNeededClasses() {
054                    return neededClasses;
055            }
056    
057            /**
058             * perform an additional check whether the native library has been loaded
059             * successfully or not
060             */
061            public boolean isAvailable() {
062                    if (super.isAvailable()) {
063                            try {
064                                    new DoubleMatrix(2, 1).mmul(new DoubleMatrix(1, 2));
065                                    return true;
066                            } catch (Throwable t) {
067                                    return false;
068                            }
069                    } else {
070                            return false;
071                    }
072            }
073    
074    }