StringConverter


1   /*
2     Copyright (C) 2002 Julien van Malderen
3   
4     This program is free software; you can redistribute it and/or modify
5     it under the terms of the GNU Lesser General Public License as
6     published by the Free Software Foundation; either version 2 of the
7     License, or (at your option) any later version.
8   
9     This program is distributed in the hope that it will be useful,
10    but WITHOUT ANY WARRANTY; without even the implied warranty of
11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12    GNU Lesser General Public License for more details.
13  
14    You should have received a copy of the GNU Lesser General Public License
15    along with this program; if not, write to the Free Software
16    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
17  
18  package org.objectweb.jac.aspects.persistence;
19  
20  /**
21   * The *StringConverter interface that converts Objects into String
22   * for stocking, and String into Objects
23   */
24  
25  public interface StringConverter {
26  
27     /**
28      * Returns a string representation of a field so that it can be
29      * stored.<p>
30      *
31      * @param obj a persistent or primitive object
32      * @return a ready to store string representation */
33  
34     String   objectToString(Object   obj);
35  
36  
37     /**
38      * Returns an object from a string, depending on the needed type.<p>
39      *
40      * @param str the value in a string format
41      * @return an object value deduced from the string representation
42      * and from the needed type */
43  
44     Object   stringToObject(String   str);
45  }
46

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