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Java > Open Source Codes > org > apache > bsf > debug > serverImpl > ServerStubTable


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  * Copyright (c) 2002 The Apache Software Foundation. All rights
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7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  *
11  * 1. Redistributions of source code must retain the above copyright
12  * notice, this list of conditions and the following disclaimer.
13  *
14  * 2. Redistributions in binary form must reproduce the above copyright
15  * notice, this list of conditions and the following disclaimer in
16  * the documentation and/or other materials provided with the
17  * distribution.
18  *
19  * 3. The end-user documentation included with the redistribution, if
20  * any, must include the following acknowlegement:
21  * "This product includes software developed by the
22  * Apache Software Foundation (http://www.apache.org/)."
23  * Alternately, this acknowlegement may appear in the software itself,
24  * if and wherever such third-party acknowlegements normally appear.
25  *
26  * 4. The names "Apache BSF", "Apache", and "Apache Software Foundation"
27  * must not be used to endorse or promote products derived from
28  * this software without prior written permission. For written
29  * permission, please contact apache@apache.org.
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31  * 5. Products derived from this software may not be called "Apache"
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35  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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37  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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40  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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47  * ====================================================================
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49  * This software consists of voluntary contributions made by many individuals
50  * on behalf of the Apache Software Foundation and was originally created by
51  * Sanjiva Weerawarana and others at International Business Machines
52  * Corporation. For more information on the Apache Software Foundation,
53  * please see <http://www.apache.org/>.
54  */
55
56 package org.apache.bsf.debug.serverImpl;
57
58 import java.util.*;
59 import org.apache.bsf.debug.jsdi.*;
60 import org.apache.bsf.debug.util.*;
61 import org.apache.bsf.debug.meta.*;
62
63 /**
64  * This class provides the resident object table for the
65  * mirrors. A Stub represents a remote JavaScript object
66  * or any remote concept that needs to be identified such
67  * engines or contexts which are not JavaScript objects.
68  *
69  * A Stub has a unique identifier allocated on the
70  * server. This is called its oid, for object identifier.
71  * The oid is not only carrying the identity but also the
72  * type of the remote object. Knowing the type is essential
73  * when a Stub has to be created. For instance, it is important
74  * to know if a remote object is just an object or a reified
75  * code as a script or a function.
76  *
77  * The oid is a long, the high word is the type (tid), the low word
78  * is the unique identifier (uid). The unique identifier is globally
79  * unique across all types.
80  *
81  * This class also acts as the factory for Stub objects.
82  * When a Stub is created, it is remembered in the resident
83  * object table for later rebinding from its uid.
84  *
85  */
86 public class ServerStubTable extends StubTable {
87     private ObjectServer m_server;
88         
89     public ServerStubTable(ObjectServer server) {
90         super(server);
91         m_server = server;
92     }
93     protected Stub factory(int tid, int uid) {
94         Stub stub=null;
95         switch(tid) {
96             case DebugConstants.BSF_DEBUGGER_TID:
97                 stub = new DebuggerStub(m_server,tid,uid);
98                 break;
99             case DebugConstants.JS_CALLBACKS_TID:
100                 stub = new JsCallbacksStub(m_server,tid,uid);
101                 break;
102             default:
103                 throw new Error JavaDoc("Unknown TID="+tid+" ["+DebugConstants.getConstantName(tid)+"]");
104         }
105         return stub;
106     }
107 }
108
109
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