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1 /*
2  * The Apache Software License, Version 1.1
3  *
4  *
5  * Copyright (c) 2000 The Apache Software Foundation. All rights
6  * reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in
17  * the documentation and/or other materials provided with the
18  * distribution.
19  *
20  * 3. The end-user documentation included with the redistribution,
21  * if any, must include the following acknowledgment:
22  * "This product includes software developed by the
23  * Apache Software Foundation (http://www.apache.org/)."
24  * Alternately, this acknowledgment may appear in the software itself,
25  * if and wherever such third-party acknowledgments normally appear.
26  *
27  * 4. The names "SOAP" and "Apache Software Foundation" must
28  * not be used to endorse or promote products derived from this
29  * software without prior written permission. For written
30  * permission, please contact apache@apache.org.
31  *
32  * 5. Products derived from this software may not be called "Apache",
33  * nor may "Apache" appear in their name, without prior written
34  * permission of the Apache Software Foundation.
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36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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38  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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42  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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47  * SUCH DAMAGE.
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49  *
50  * This software consists of voluntary contributions made by many
51  * individuals on behalf of the Apache Software Foundation and was
52  * originally based on software copyright (c) 2000, International
53  * Business Machines, Inc., http://www.apache.org. For more
54  * information on the Apache Software Foundation, please see
55  * <http://www.apache.org/>.
56  */
57
58 package org.apache.soap.server;
59
60 import org.apache.soap.util.Bean;
61 import org.apache.soap.SOAPException;
62 import org.apache.soap.Constants;
63 import org.apache.soap.server.DeploymentDescriptor;
64 import com.ibm.bsf.*;
65
66
67 /**
68  * This class provides a static method to invoke services implemented
69  * via BSF. This code used to live in rpcrouter.jsp, but it was moved
70  * here to keep rpcrouter.jsp independent of BSF (didn't want to prereq
71  * BSF). The code in rpcrouter.jsp invokes these methods using reflection
72  * to avoid being dependent on them ..
73  *
74  * @author Sanjiva Weerawarana (sanjiva@watson.ibm.com)
75  * @author Matthew J. Duftler (duftler@us.ibm.com)
76  */
77 public class InvokeBSF {
78
79   /**
80    * This method is invoked to exec the script implementing the service into
81    * the scripting engine so that later service calls can work.
82    *
83    * @param dd the deployment descriptor of the service
84    * @param scriptStr the string containing function definitions to be exec'ed
85    *
86    * @exception SOAPException if something goes wrong
87    */
88   public static void init (DeploymentDescriptor dd, Object JavaDoc target,
89                            String JavaDoc scriptStr) throws SOAPException {
90     try {
91       BSFManager mgr = (BSFManager) target;
92       mgr.exec (dd.getScriptLanguage (), "service script for '" +
93                 dd.getID () + "'", 0, 0, scriptStr);
94     } catch (BSFException e) {
95       throw new SOAPException (Constants.FAULT_CODE_SERVER,
96                                "BSF Error: " + e.getMessage (), e);
97     }
98   }
99
100   /**
101    * This method is invoked when a method is to be called.
102    *
103    * @param dd the deployment descriptor of the service
104    * @param target the BSFManager object which is used to exec/call
105    * @param methodName name of function in the script to call
106    * @param args arguments to the function or null if none
107    *
108    * @return a Bean object containing the result
109    *
110    * @exception SOAPException if something goes wrong
111    */
112   public static Bean service (DeploymentDescriptor dd, Object JavaDoc target,
113                               String JavaDoc methodName, Object JavaDoc[] args)
114        throws SOAPException {
115     try {
116       BSFManager mgr = (BSFManager) target;
117       BSFEngine eng = mgr.loadScriptingEngine (dd.getScriptLanguage ());
118       Object JavaDoc result = eng.call (null, methodName, args);
119       return new Bean ((result != null) ? result.getClass () : Object JavaDoc.class,
120                        result);
121     } catch (BSFException e) {
122       throw new SOAPException (Constants.FAULT_CODE_SERVER,
123                                "BSF Error: " + e.getMessage (), e);
124     }
125   }
126 }
127
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