HTTPInvocationUnMarshaller


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.http.HTTPUnMarshaller;
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  ;
33  import java.io.IOException  ;
34  import java.util.Map  ;
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 HTTPInvocationUnMarshaller extends HTTPUnMarshaller
43  {
44     public final static String   DATATYPE = "invocationhttp";
45  
46     public Object   read(InputStream   inputStream, Map   metadata) throws IOException  , ClassNotFoundException  
47     {
48        Object   ret = super.read(inputStream, metadata);
49  
50        if(ret instanceof InvocationRequest)
51        {
52           InvocationRequest remoteInv = (InvocationRequest) ret;
53           Object   param = remoteInv.getParameter();
54  
55           if(param instanceof MarshalledInvocation)
56           {
57              MarshalledInvocation mi = (MarshalledInvocation) param;
58              Object   txCxt = mi.getTransactionPropagationContext();
59              if(txCxt != null)
60              {
61                 TransactionPropagationContextImporter tpcImporter = TransactionPropagationContextUtil.getTPCImporter();
62                 mi.setTransaction(tpcImporter.importTransactionPropagationContext(txCxt));
63              }
64           }
65        }
66  
67        return ret;
68     }
69  
70     public UnMarshaller cloneUnMarshaller() throws CloneNotSupportedException  
71     {
72        HTTPInvocationUnMarshaller unmarshaller = new HTTPInvocationUnMarshaller();
73        unmarshaller.setClassLoader(this.customClassLoader);
74        return unmarshaller;
75     }
76  }
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