/*
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* JBoss, Home of Professional Open Source
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* Copyright 2005, JBoss Inc., and individual contributors as indicated
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* by the @authors tag. See the copyright.txt in the distribution for a
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* full listing of individual contributors.
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*
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* This is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this software; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
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*/
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package org.jbpm.pvm.internal.type.converter;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.io.Serializable;
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import org.jbpm.api.JbpmException;
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import org.jbpm.pvm.internal.env.EnvironmentImpl;
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import org.jbpm.pvm.internal.model.ScopeInstanceImpl;
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import org.jbpm.pvm.internal.tx.DeserializedObject;
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import org.jbpm.pvm.internal.tx.Transaction;
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import org.jbpm.pvm.internal.type.Converter;
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import org.jbpm.pvm.internal.type.Variable;
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import org.jbpm.pvm.internal.type.variable.BlobVariable;
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public class SerializableToBytesConverter implements Converter {
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private static final long serialVersionUID = 1L;
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public boolean supports(Object value, ScopeInstanceImpl scopeInstance, Variable variable) {
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if (value==null) return true;
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return Serializable.class.isAssignableFrom(value.getClass());
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}
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public Object convert(Object o, ScopeInstanceImpl scopeInstance, Variable variable) {
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byte[] bytes = null;
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try {
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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ObjectOutputStream oos = new ObjectOutputStream(baos);
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oos.writeObject(o);
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oos.flush();
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bytes = baos.toByteArray();
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} catch (IOException e) {
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throw new JbpmException("couldn't serialize '"+o+"'", e);
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}
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return bytes;
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}
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public Object revert(Object o, ScopeInstanceImpl scopeInstance, Variable variable) {
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byte[] bytes = (byte[]) o;
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try {
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ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
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ObjectInputStream ois = new ObjectInputStream(bais);
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Object object = ois.readObject();
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Transaction transaction = EnvironmentImpl.getFromCurrent(Transaction.class, false);
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if (transaction!=null) {
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transaction.registerDeserializedObject(new DeserializedObject(object, scopeInstance, (BlobVariable) variable));
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}
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return object;
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} catch (Exception e) {
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throw new JbpmException("couldn't deserialize object", e);
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}
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}
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}
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