/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. 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.jboss.serial.persister;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import org.jboss.serial.classmetamodel.ClassMetaData;
import org.jboss.serial.classmetamodel.ClassMetamodelFactory;
import org.jboss.serial.classmetamodel.StreamingClass;
import org.jboss.serial.objectmetamodel.ObjectSubstitutionInterface;
import org.jboss.serial.objectmetamodel.ObjectsCache;
public class EnumerationPersister implements Persister
{
byte id;
static Class enumClass;
static
{
try
{
enumClass = Class.forName("java.lang.Enum");
}
catch (Throwable e)
{
}
}
public byte getId() {
return id;
}
public void setId(byte id) {
this.id = id;
}
/** @todo is it needed to get another metadata here.
* need to verify*/
public void writeData(ClassMetaData metaData, ObjectOutput out, Object obj, ObjectSubstitutionInterface substitution) throws IOException
{
Enum aEnum = (Enum)obj;
out.writeUTF(aEnum.getDeclaringClass().getName());
out.writeUTF(aEnum.name());
}
/** @todo is it needed to get another metadata here.
* need to verify*/
public Object readData (ClassLoader loader, StreamingClass streaming, ClassMetaData nonUsedmetaData, int referenceId, ObjectsCache cache, ObjectInput input, ObjectSubstitutionInterface substitution) throws IOException
{
String instanceName = null;
Class enumClass = null;
String classEnum = input.readUTF();
try
{
ClassMetaData enummetaData = ClassMetamodelFactory.getClassMetaData(classEnum,cache.getClassResolver(),loader,true);
enumClass = enummetaData.getClazz();
instanceName = input.readUTF();
Object enumInstance = Enum.valueOf(enumClass, instanceName);
if (enumInstance!=null)
{
cache.putObjectInCacheRead(referenceId,enumInstance);
return enumInstance;
}
else
{
throw new IOException("Enumeration " + instanceName + " not found at Enum Class " + enumClass);
}
}
catch (Exception e)
{
IOException ioException = new IOException(e.getMessage());
ioException.initCause(e);
throw ioException;
}
}
public boolean canPersist(Object obj)
{
if (enumClass!=null)
{
return (enumClass.isAssignableFrom(obj.getClass()));
}
else
{
return false;
}
}
}