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.collections; 025 026 import java.io.File; 027 import java.io.IOException; 028 import java.io.InputStream; 029 import java.io.OutputStream; 030 import java.io.Serializable; 031 032 import org.ujmp.core.util.SerializationUtil; 033 034 public class SerializedObjectMap<K, V> extends AbstractDiskMap<K, V> { 035 private static final long serialVersionUID = -1969661697021465379L; 036 037 public SerializedObjectMap() throws IOException { 038 this((File) null, true); 039 } 040 041 public SerializedObjectMap(String path) throws IOException { 042 this(new File(path), true); 043 } 044 045 public SerializedObjectMap(boolean useGZip) throws IOException { 046 this((File) null, useGZip); 047 } 048 049 public SerializedObjectMap(String path, boolean useGZip) throws IOException { 050 this(new File(path), useGZip); 051 } 052 053 public SerializedObjectMap(File path) throws IOException { 054 this(path, true); 055 } 056 057 public SerializedObjectMap(File path, boolean useGZip) throws IOException { 058 super(path, useGZip); 059 } 060 061 public final void writeValue(OutputStream os, V value) { 062 try { 063 SerializationUtil.serialize((Serializable) value, os); 064 } catch (Exception e) { 065 e.printStackTrace(); 066 } 067 } 068 069 @SuppressWarnings("unchecked") 070 public V readValue(InputStream is) { 071 try { 072 return (V) SerializationUtil.deserialize(is); 073 } catch (Exception e) { 074 e.printStackTrace(); 075 return null; 076 } 077 } 078 079 }