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Java > Open Source Codes > org > objectweb > openccm > explorer > CORBA > POAContext


1 /*====================================================================
2
3 OpenCCM: The Open CORBA Component Model Platform
4 Copyright (C) 2000-2004 INRIA - USTL - LIFL - GOAL
5 Contact: openccm@objectweb.org
6
7 This library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or any later version.
11
12 This library 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 library; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 USA
21
22 Initial developer(s): Jerome Moroy.
23 Contributor(s): ______________________________________.
24
25 ====================================================================*/
26 package org.objectweb.openccm.explorer.CORBA;
27
28 /** To use the POA interface */
29 import org.objectweb.util.explorer.api.Context;
30 import org.objectweb.util.explorer.api.Entry;
31 import org.objectweb.util.explorer.core.naming.lib.DefaultEntry;
32 import org.omg.PortableServer.POA JavaDoc;
33
34 /**
35  * Basic implementation of the Context interface
36  * for managing POA
37  *
38  * @author <a HREF="mailto:Jerome.Moroy@lifl.fr">Jerome Moroy</a>
39  *
40  * @version 0.1
41  */
42 public class POAContext
43   implements Context
44 {
45
46     // ==================================================================
47 //
48 // No Internal state.
49 //
50 // ==================================================================
51
52     // ==================================================================
53 //
54 // Constructors.
55 //
56 // ==================================================================
57
58     // ==================================================================
59 //
60 // Internal methods.
61 //
62 // ==================================================================
63
64     protected Entry getLocalEntry(String JavaDoc name, POA JavaDoc poa) {
65         if (poa != null) {
66             Object JavaDoc value = getLocalValue(name, poa);
67             // Returns a created entry if name is found, otherwise null.
68 return (value != null) ? new DefaultEntry(name, value) : null;
69         }
70         return null;
71     }
72
73     protected Object JavaDoc getLocalValue(String JavaDoc name, POA JavaDoc poa) {
74         if (poa != null) {
75             POA JavaDoc obj = null;
76             try {
77                 obj = poa.find_POA(name, false);
78             } catch (org.omg.PortableServer.POAPackage.AdapterNonExistent JavaDoc e) {
79                 System.out.println("AdapterNonExistent");
80             }
81             return obj;
82         }
83         return null;
84     }
85
86     // ==================================================================
87 //
88 // Public methods for interface Context.
89 //
90 // ==================================================================
91
92     /**
93      * Returns an array containing the entries contained by the target context.
94      * @return A new array of entry.
95      */
96     public Entry[] getEntries(Object JavaDoc object) {
97         POA JavaDoc poa = (POA JavaDoc)object;
98         POA JavaDoc[] objects = poa.the_children();
99         Entry[] values = new Entry[objects.length];
100         for (int i = 0; i < values.length; i++)
101             values[i] = getLocalEntry(objects[i].the_name(), poa);
102         return values;
103     }
104
105 }
106
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