ItfName


1   /*
2   * CLIF is a Load Injection Framework
3   * Copyright (C) 2003 France Telecom R&D
4   * Copyright (C) 2003 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  * CLIF $Name:  $
21  *
22  * Contact: clif@objectweb.org
23  */
24  
25  package org.objectweb.clif.util;
26  
27  import java.util.Map  ;
28  import java.util.HashMap  ;
29  import java.math.BigInteger  ;
30  
31  
32  /**
33   * Interface unique name generator for collection client interfaces.
34   * @author Bruno Dillenseger
35   */
36  abstract public class ItfName
37  {
38      static protected Map   interfaces = new HashMap  ();
39  
40      /**
41       * Unique interface name generation (uniqueness is bound to this class definition in one JVM)
42       * @param itfBaseName interface name to be used as a prefix for unique name generation
43       * @return a new unique name with the given prefix
44       */
45      static public String   gen(String   itfBaseName)
46      {
47          BigInteger   lastId = (BigInteger  ) interfaces.get(itfBaseName);
48          if (lastId == null)
49          {
50              lastId = BigInteger.ZERO;
51          }
52          else
53          {
54              lastId = lastId.add(BigInteger.ONE);
55          }
56          interfaces.put(itfBaseName, lastId);
57          return itfBaseName + lastId;
58      }
59  }
60
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