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.calculation;
025    
026    import java.util.Collection;
027    
028    import org.ujmp.core.Coordinates;
029    import org.ujmp.core.Matrix;
030    import org.ujmp.core.enums.ValueType;
031    import org.ujmp.core.exceptions.MatrixException;
032    
033    public class Concatenation extends AbstractObjectCalculation {
034            private static final long serialVersionUID = -2428322597419645314L;
035    
036            private long[] positions = null;
037    
038            private long[] size = Coordinates.ZERO2D;
039    
040            private ValueType valueType = null;
041    
042            public Concatenation(int dimension, Matrix... matrices) {
043                    super(dimension, matrices);
044                    valueType = matrices[0].getValueType();
045                    positions = new long[matrices.length];
046                    long pos = 0;
047                    for (int i = 0; i < matrices.length; i++) {
048                            Matrix m = matrices[i];
049                            if (!valueType.equals(m.getValueType())) {
050                                    valueType = ValueType.OBJECT;
051                            }
052                            positions[i] = pos;
053                            pos += m.getSize(dimension);
054                            size = Coordinates.max(size, m.getSize());
055                    }
056                    size[dimension] = pos; // set total size
057            }
058    
059            public Concatenation(int dimension, Collection<Matrix> matrices) {
060                    this(dimension, matrices.toArray(new Matrix[matrices.size()]));
061            }
062    
063            public Object getObject(long... coordinates) throws MatrixException {
064                    int i = 0;
065                    for (; i < positions.length; i++) {
066                            if (positions[i] > coordinates[getDimension()]) {
067                                    break;
068                            }
069                    }
070                    i--;
071                    Matrix m = getSources()[i];
072                    long[] c = Coordinates.copyOf(coordinates);
073                    c[getDimension()] = c[getDimension()] - positions[i];
074                    return m.getAsObject(c);
075            }
076    
077            public long[] getSize() {
078                    return size;
079            }
080    
081            public void setObject(Object value, long... coordinates) throws MatrixException {
082            }
083    
084            public final ValueType getValueType() {
085                    return valueType;
086            }
087    
088    }