/*
* JBoss, Home of Professional Open Source
* Copyright 2009 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* See the copyright.txt 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 net.jcip.annotations.Immutable;
import org.infinispan.io.UnsignedNumeric;
import org.infinispan.marshall.AbstractExternalizer;
import org.infinispan.marshall.Ids;
import org.infinispan.marshall.MarshallUtil;
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.HashSet;
import java.util.Set;
import java.util.TreeSet;
/**
* Set externalizer for all set implementations, i.e. HashSet and TreeSet
*
* @author Galder ZamarreƱo
* @since 4.0
*/
@Immutable
public class SetExternalizer extends AbstractExternalizer<Set> {
private static final int HASHSET = 0;
private static final int TREESET = 1;
private final IdentityIntMap<Class<?>> numbers = new IdentityIntMap<Class<?>>(2);
public SetExternalizer() {
numbers.put(HashSet.class, HASHSET);
numbers.put(TreeSet.class, TREESET);
}
@Override
public void writeObject(ObjectOutput output, Set set) throws IOException {
int number = numbers.get(set.getClass(), -1);
output.writeByte(number);
MarshallUtil.marshallCollection(set, output);
}
@Override
public Set readObject(ObjectInput input) throws IOException, ClassNotFoundException {
int magicNumber = input.readUnsignedByte();
Set<Object> subject = null;
switch (magicNumber) {
case HASHSET:
subject = new HashSet();
break;
case TREESET:
subject = new TreeSet();
break;
}
int size = UnsignedNumeric.readUnsignedInt(input);
for (int i = 0; i < size; i++) subject.add(input.readObject());
return subject;
}
@Override
public Integer getId() {
return Ids.JDK_SETS;
}
@Override
public Set<Class<? extends Set>> getTypeClasses() {
return Util.<Class<? extends Set>>asSet(HashSet.class, TreeSet.class);
}
}