/*
* 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.jbpm.pvm.internal.type.converter;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import org.jbpm.api.JbpmException;
import org.jbpm.pvm.internal.env.EnvironmentImpl;
import org.jbpm.pvm.internal.model.ScopeInstanceImpl;
import org.jbpm.pvm.internal.tx.DeserializedObject;
import org.jbpm.pvm.internal.tx.Transaction;
import org.jbpm.pvm.internal.type.Converter;
import org.jbpm.pvm.internal.type.Variable;
import org.jbpm.pvm.internal.type.variable.BlobVariable;
public class SerializableToBytesConverter implements Converter {
private static final long serialVersionUID = 1L;
public boolean supports(Object value, ScopeInstanceImpl scopeInstance, Variable variable) {
if (value==null) return true;
return Serializable.class.isAssignableFrom(value.getClass());
}
public Object convert(Object o, ScopeInstanceImpl scopeInstance, Variable variable) {
byte[] bytes = null;
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(o);
oos.flush();
bytes = baos.toByteArray();
} catch (IOException e) {
throw new JbpmException("couldn't serialize '"+o+"'", e);
}
return bytes;
}
public Object revert(Object o, ScopeInstanceImpl scopeInstance, Variable variable) {
byte[] bytes = (byte[]) o;
try {
ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
ObjectInputStream ois = new ObjectInputStream(bais);
Object object = ois.readObject();
Transaction transaction = EnvironmentImpl.getFromCurrent(Transaction.class, false);
if (transaction!=null) {
transaction.registerDeserializedObject(new DeserializedObject(object, scopeInstance, (BlobVariable) variable));
}
return object;
} catch (Exception e) {
throw new JbpmException("couldn't deserialize object", e);
}
}
}