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.IOException; 027 import java.io.ObjectInputStream; 028 import java.io.ObjectOutputStream; 029 import java.io.OptionalDataException; 030 import java.io.Serializable; 031 import java.util.AbstractCollection; 032 import java.util.AbstractSet; 033 import java.util.Collection; 034 import java.util.Iterator; 035 import java.util.Map; 036 import java.util.Set; 037 038 import org.ujmp.core.exceptions.MatrixException; 039 040 public abstract class AbstractMap<K, V> extends java.util.AbstractMap<K, V> implements Serializable { 041 private static final long serialVersionUID = -6429342188863787235L; 042 043 public boolean isEmpty() { 044 return size() == 0; 045 } 046 047 public void putAll(Map<? extends K, ? extends V> map) { 048 for (K k : map.keySet()) { 049 put(k, map.get(k)); 050 } 051 } 052 053 public boolean containsKey(Object key) { 054 return keySet().contains(key); 055 } 056 057 public boolean containsValue(Object value) { 058 for (K key : keySet()) { 059 if (value.equals(get(key))) { 060 return true; 061 } 062 } 063 return false; 064 065 } 066 067 public Collection<V> values() { 068 return new AbstractCollection<V>() { 069 070 @Override 071 public Iterator<V> iterator() { 072 return new Iterator<V>() { 073 074 Iterator<K> it = keySet().iterator(); 075 076 public boolean hasNext() { 077 return it.hasNext(); 078 } 079 080 public V next() { 081 return get(it.next()); 082 } 083 084 public void remove() { 085 throw new MatrixException("not implemented"); 086 } 087 }; 088 } 089 090 @Override 091 public int size() { 092 return size(); 093 } 094 }; 095 } 096 097 public Set<java.util.Map.Entry<K, V>> entrySet() { 098 return new AbstractSet<Entry<K, V>>() { 099 100 @Override 101 public Iterator<java.util.Map.Entry<K, V>> iterator() { 102 return new Iterator<Entry<K, V>>() { 103 104 Iterator<K> it = keySet().iterator(); 105 106 public boolean hasNext() { 107 return it.hasNext(); 108 } 109 110 public java.util.Map.Entry<K, V> next() { 111 final K k = it.next(); 112 final V v = get(k); 113 return new java.util.Map.Entry<K, V>() { 114 115 public K getKey() { 116 return k; 117 } 118 119 public V getValue() { 120 return v; 121 } 122 123 public V setValue(V value) { 124 throw new MatrixException("not implemented"); 125 } 126 }; 127 } 128 129 public void remove() { 130 throw new MatrixException("not implemented"); 131 } 132 }; 133 } 134 135 @Override 136 public int size() { 137 return size(); 138 } 139 }; 140 } 141 142 @SuppressWarnings("unchecked") 143 private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException { 144 s.defaultReadObject(); 145 int size = s.readInt(); 146 for (int i = 0; i < size; i++) { 147 try { 148 K k = (K) s.readObject(); 149 V v = (V) s.readObject(); 150 put(k, v); 151 } catch (OptionalDataException e) { 152 return; 153 } 154 } 155 } 156 157 private void writeObject(ObjectOutputStream s) throws IOException, MatrixException { 158 s.defaultWriteObject(); 159 s.writeInt(size()); 160 for (Object k : keySet()) { 161 Object v = get(k); 162 s.writeObject(k); 163 s.writeObject(v); 164 } 165 } 166 167 public abstract void clear(); 168 169 public abstract V get(Object key); 170 171 public abstract Set<K> keySet(); 172 173 public abstract V put(K key, V value); 174 175 public abstract V remove(Object key); 176 177 public abstract int size(); 178 179 }