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Java > Open Source Codes > org > objectweb > jorm > facility > naming > generator > LongGenMgrRegistry


1 /**
2  * JORM: an implementation of a generic mapping system for persistent Java
3  * objects. Two mapping are supported: to RDBMS and to binary files.
4  * Copyright (C) 2001-2003 France Telecom R&D - INRIA
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  *
20  * Contact: jorm-team@objectweb.org
21  *
22  */
23
24 package org.objectweb.jorm.facility.naming.generator;
25
26 import org.objectweb.jorm.api.PMapper;
27 import org.objectweb.jorm.api.PException;
28
29 import java.util.HashMap JavaDoc;
30
31 /**
32  * Statically registers LongGenMgr associated with mappers within a JVM context.
33  * @author P. Dechamboux
34  */
35 public class LongGenMgrRegistry {
36     static HashMap JavaDoc mgrs = new HashMap JavaDoc();
37
38     /**
39      * Removes this LongGenMgr from this registry.
40      */
41     public static void deregisterLonGenMgr(LongGenMgr lgm) {
42         mgrs.remove(lgm.getPMapper());
43     }
44
45     /**
46      * Looks for a LonGenMgr associated with this mapper.
47      */
48     public static LongGenMgr getLongGenMgr(PMapper m) {
49         LongGenMgr res;
50         res = (LongGenMgr) mgrs.get(m);
51         return res;
52     }
53
54     /**
55      * Adds this LongGenMgr from this registry.
56      */
57     public static synchronized void registerLonGenMgr(LongGenMgr lgm)
58             throws PException {
59         if (mgrs.get(lgm.getPMapper()) != null) {
60             throw new PException("LongGenMgr already registered.");
61         }
62         mgrs.put(lgm.getPMapper(), lgm);
63     }
64 }
65
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