/*
* JBoss, Home of Professional Open Source.
* Copyright 2009, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.infinispan.marshall.exts;
import org.infinispan.marshall.AbstractExternalizer;
import org.infinispan.marshall.MarshallUtil;
import org.infinispan.marshall.Ids;
import org.infinispan.util.FastCopyHashMap;
import org.infinispan.util.Util;
import org.jboss.marshalling.util.IdentityIntMap;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
/**
* Map externalizer for all map implementations except immutable maps and singleton maps, i.e. FastCopyHashMap, HashMap,
* TreeMap.
*
* @author Galder Zamarreño
* @since 4.0
*/
public class MapExternalizer extends AbstractExternalizer<Map> {
private static final int HASHMAP = 0;
private static final int TREEMAP = 1;
private static final int FASTCOPYHASHMAP = 2;
private final IdentityIntMap<Class<?>> numbers = new IdentityIntMap<Class<?>>(3);
public MapExternalizer() {
numbers.put(HashMap.class, HASHMAP);
numbers.put(TreeMap.class, TREEMAP);
numbers.put(FastCopyHashMap.class, FASTCOPYHASHMAP);
}
@Override
public void writeObject(ObjectOutput output, Map map) throws IOException {
int number = numbers.get(map.getClass(), -1);
output.write(number);
MarshallUtil.marshallMap(map, output);
}
@Override
public Map readObject(ObjectInput input) throws IOException, ClassNotFoundException {
int magicNumber = input.readUnsignedByte();
Map subject = null;
switch (magicNumber) {
case HASHMAP:
subject = new HashMap();
break;
case TREEMAP:
subject = new TreeMap();
break;
case FASTCOPYHASHMAP:
subject = new FastCopyHashMap();
break;
}
MarshallUtil.unmarshallMap(subject, input);
return subject;
}
@Override
public Integer getId() {
return Ids.MAPS;
}
@Override
public Set<Class<? extends Map>> getTypeClasses() {
return Util.<Class<? extends Map>>asSet(
HashMap.class, TreeMap.class, FastCopyHashMap.class);
}
}