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Java > Open Source Codes > org > apache > bsf > debug > clientImpl > ClientStubTable


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  * Copyright (c) 2002 The Apache Software Foundation. All rights
5  * reserved.
6  *
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.
30  *
31  * 5. Products derived from this software may not be called "Apache"
32  * nor may "Apache" appear in their names without prior written
33  * permission of the Apache Group.
34  *
35  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38  * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46  * SUCH DAMAGE.
47  * ====================================================================
48  *
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.clientImpl;
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 mirror 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 mirror 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 mirror 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 mirror objects.
82  * When a mirror is created, it is remembered in the resident
83  * object table for later rebinding from its uid.
84  *
85  */
86 public class ClientStubTable extends StubTable {
87     
88     public ClientStubTable(SocketConnection con) {
89         super(con);
90     }
91     
92     protected Stub factory(int tid, int uid) {
93         Stub stub=null;
94         switch(tid) {
95             case DebugConstants.JS_CONTEXT_TID:
96                 stub = new JsContextStub(m_con,tid,uid);
97                 break;
98             case DebugConstants.JS_OBJECT_TID:
99                 stub = new JsObjectStub(m_con,tid,uid);
100                 break;
101             case DebugConstants.JS_ENGINE_TID:
102                 stub = new JsEngineStub(m_con,tid,uid);
103                 break;
104             default:
105                 throw new Error JavaDoc("Unknown TID="+tid+" ["+DebugConstants.getConstantName(tid)+"]");
106         }
107         return stub;
108     }
109 }
110
111
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