01: /*
02: * JBoss, Home of Professional Open Source
03: * Copyright 2005, JBoss Inc., and individual contributors as indicated
04: * by the @authors tag. See the copyright.txt in the distribution for a
05: * full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * published by the Free Software Foundation; either version 2.1 of
10: * the License, or (at your option) any later version.
11: *
12: * This software is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this software; if not, write to the Free
19: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21: */
22: package org.jbpm.context.exe.converter;
23:
24: import java.io.ByteArrayInputStream;
25: import java.io.ByteArrayOutputStream;
26: import java.io.IOException;
27: import java.io.ObjectInputStream;
28: import java.io.ObjectOutputStream;
29: import java.io.Serializable;
30:
31: import org.jbpm.JbpmException;
32: import org.jbpm.bytes.ByteArray;
33: import org.jbpm.context.exe.Converter;
34:
35: public class SerializableToByteArrayConverter implements Converter {
36:
37: private static final long serialVersionUID = 1L;
38:
39: public boolean supports(Object value) {
40: if (value == null)
41: return true;
42: return Serializable.class.isAssignableFrom(value.getClass());
43: }
44:
45: public Object convert(Object o) {
46: byte[] bytes = null;
47: try {
48: ByteArrayOutputStream baos = new ByteArrayOutputStream();
49: ObjectOutputStream oos = new ObjectOutputStream(baos);
50: oos.writeObject(o);
51: oos.flush();
52: bytes = baos.toByteArray();
53: } catch (IOException e) {
54: throw new JbpmException("couldn't serialize '" + o + "'", e);
55: }
56:
57: return new ByteArray(bytes);
58: }
59:
60: public Object revert(Object o) {
61: ByteArray byteArray = (ByteArray) o;
62: try {
63: ByteArrayInputStream bais = new ByteArrayInputStream(
64: byteArray.getBytes());
65: ObjectInputStream ois = new ObjectInputStream(bais);
66: return ois.readObject();
67: } catch (Exception e) {
68: throw new JbpmException("couldn't deserialize object", e);
69: }
70: }
71: }
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