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.io; 025 026 import java.io.BufferedOutputStream; 027 import java.io.File; 028 import java.io.FileOutputStream; 029 import java.io.IOException; 030 import java.io.ObjectOutputStream; 031 import java.io.OutputStream; 032 033 import org.ujmp.core.Matrix; 034 import org.ujmp.core.enums.ValueType; 035 036 public class ExportMatrixSER { 037 038 public static final void toFile(File file, Matrix m, Object... parameters) throws IOException { 039 FileOutputStream out = new FileOutputStream(file); 040 toStream(out, m, parameters); 041 out.close(); 042 } 043 044 public static final void toStream(OutputStream stream, Matrix m, Object... parameters) 045 throws IOException { 046 ObjectOutputStream s = new ObjectOutputStream(new BufferedOutputStream(stream)); 047 048 long[] size = m.getSize(); 049 int sizeLength = size.length; 050 ValueType valueType = m.getValueType(); 051 052 s.writeObject(valueType); 053 s.writeBoolean(m.isSparse()); 054 s.writeInt(sizeLength); 055 for (int i = 0; i < sizeLength; i++) { 056 s.writeLong(size[i]); 057 } 058 059 for (long[] c : m.availableCoordinates()) { 060 s.writeBoolean(true); // hasNext 061 for (int i = 0; i < sizeLength; i++) { 062 s.writeLong(c[i]); 063 } 064 switch (valueType) { 065 case DOUBLE: 066 s.writeDouble(m.getAsDouble(c)); 067 break; 068 case INT: 069 s.writeInt(m.getAsInt(c)); 070 break; 071 default: 072 s.writeObject(m.getAsObject(c)); 073 break; 074 } 075 } 076 s.writeBoolean(false); // hasNext 077 s.close(); 078 } 079 080 }