ServiceContextRegistry.java revision 608:7e06bf1dcb09 
1/*
2 * Copyright (c) 1999, 2004, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package com.sun.corba.se.spi.servicecontext;
27
28import org.omg.CORBA.BAD_PARAM;
29import java.util.Vector ;
30import java.util.Enumeration ;
31import com.sun.corba.se.spi.servicecontext.ServiceContext ;
32import com.sun.corba.se.spi.servicecontext.ServiceContextData ;
33import com.sun.corba.se.spi.orb.ORB ;
34import com.sun.corba.se.impl.orbutil.ORBUtility ;
35
36public class ServiceContextRegistry {
37    private ORB orb ;
38    private Vector scCollection ;
39
40    private void dprint( String msg )
41    {
42        ORBUtility.dprint( this, msg ) ;
43    }
44
45    public ServiceContextRegistry( ORB orb )
46    {
47        scCollection = new Vector() ;
48        this.orb = orb ;
49    }
50
51    /** Register the ServiceContext class so that it will be recognized
52     * by the read method.
53     * Class cls must have the following properties:
54     * <ul>
55     * <li>It must derive from com.sun.corba.se.spi.servicecontext.ServiceContext.</li>
56     * <li>It must have a public static final int SERVICE_CONTEXT_ID
57     * member.</li>
58     * <li>It must implement a constructor that takes a
59     * org.omg.CORBA_2_3.portable.InputStream argument.</li>
60     * </ul>
61     */
62    public void register( Class cls )
63    {
64        if (ORB.ORBInitDebug)
65            dprint( "Registering service context class " + cls ) ;
66
67        ServiceContextData scd = new ServiceContextData( cls ) ;
68
69        if (findServiceContextData(scd.getId()) == null)
70            scCollection.addElement( scd ) ;
71        else
72            throw new BAD_PARAM( "Tried to register duplicate service context" ) ;
73    }
74
75    public ServiceContextData findServiceContextData( int scId )
76    {
77        if (ORB.ORBInitDebug)
78            dprint( "Searching registry for service context id " + scId ) ;
79
80        Enumeration enumeration = scCollection.elements() ;
81        while (enumeration.hasMoreElements()) {
82            ServiceContextData scd =
83                (ServiceContextData)(enumeration.nextElement()) ;
84            if (scd.getId() == scId) {
85                if (ORB.ORBInitDebug)
86                    dprint( "Service context data found: " + scd ) ;
87
88                return scd ;
89            }
90        }
91
92        if (ORB.ORBInitDebug)
93            dprint( "Service context data not found" ) ;
94
95        return null ;
96    }
97}
98