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Java > Open Source Codes > org > jboss > invocation > unified > marshall > InvocationUnMarshaller


1 /*
2 * JBoss, Home of Professional Open Source
3 * Copyright 2005, JBoss Inc., and individual contributors as indicated
4 * by the @authors tag. See the copyright.txt in the distribution for a
5 * full listing of individual contributors.
6 *
7 * This is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Lesser General Public License as
9 * 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.jboss.invocation.unified.marshall;
23
24 import org.jboss.remoting.marshal.serializable.SerializableUnMarshaller;
25 import org.jboss.remoting.marshal.UnMarshaller;
26 import org.jboss.remoting.marshal.UnMarshallerDecorator;
27 import org.jboss.remoting.InvocationRequest;
28 import org.jboss.invocation.MarshalledInvocation;
29 import org.jboss.tm.TransactionPropagationContextUtil;
30 import org.jboss.tm.TransactionPropagationContextImporter;
31
32 import java.io.InputStream JavaDoc;
33 import java.io.IOException JavaDoc;
34 import java.util.Map JavaDoc;
35
36 /**
37  * This is a hollow implementation in that it only over rides the DATATYPE
38  * value. All behavior is that of SerializableUnMarshaller.
39  *
40  * @author <a HREF="mailto:tom@jboss.org">Tom Elrod</a>
41  */
42 public class InvocationUnMarshaller extends SerializableUnMarshaller implements UnMarshallerDecorator
43 {
44    public final static String JavaDoc DATATYPE = "invocation";
45
46    public Object JavaDoc read(InputStream JavaDoc inputStream, Map JavaDoc metadata) throws IOException JavaDoc, ClassNotFoundException JavaDoc
47    {
48       Object JavaDoc ret = super.read(inputStream, metadata);
49
50
51       return removeDecoration(ret);
52    }
53
54    public UnMarshaller cloneUnMarshaller() throws CloneNotSupportedException JavaDoc
55    {
56       InvocationUnMarshaller unmarshaller = new InvocationUnMarshaller();
57       unmarshaller.setClassLoader(this.customClassLoader);
58       return unmarshaller;
59    }
60
61     public Object JavaDoc removeDecoration(Object JavaDoc obj) throws IOException JavaDoc
62     {
63         if(obj instanceof InvocationRequest)
64         {
65            InvocationRequest remoteInv = (InvocationRequest) obj;
66            Object JavaDoc param = remoteInv.getParameter();
67
68            if(param instanceof MarshalledInvocation)
69            {
70               MarshalledInvocation mi = (MarshalledInvocation) param;
71               Object JavaDoc txCxt = mi.getTransactionPropagationContext();
72               if(txCxt != null)
73               {
74                  TransactionPropagationContextImporter tpcImporter = TransactionPropagationContextUtil.getTPCImporter();
75                  mi.setTransaction(tpcImporter.importTransactionPropagationContext(txCxt));
76               }
77            }
78         }
79         return obj;
80     }
81
82 }
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