TCollection


1   /* Copyright (C) 2004 - 2006  db4objects Inc.  http://www.db4o.com
2   
3   This file is part of the db4o open source object database.
4   
5   db4o is free software; you can redistribute it and/or modify it under
6   the terms of version 2 of the GNU General Public License as published
7   by the Free Software Foundation and as clarified by db4objects' GPL 
8   interpretation policy, available at
9   http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10  Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11  Suite 350, San Mateo, CA 94403, USA.
12  
13  db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14  WARRANTY; without even the implied warranty of MERCHANTABILITY or
15  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
16  for more details.
17  
18  You should have received a copy of the GNU General Public License along
19  with this program; if not, write to the Free Software Foundation, Inc.,
20  59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. */
21  package com.db4o.config;
22  
23  import java.util.*;
24  
25  import com.db4o.*;
26  
27  /**
28   * @exclude
29   * @sharpen.ignore
30   */
31  public class TCollection implements ObjectTranslator {
32      
33      public Object   onStore(ObjectContainer con, Object   object){
34          Collection col = (Collection)object;
35          Object  [] elements = new Object  [col.size()];
36          Iterator it = col.iterator();
37          int i = 0;
38          while(it.hasNext()){
39              elements[i++] = it.next();
40          }
41          return elements;
42      }
43  
44      public void onActivate(ObjectContainer con, Object   object, Object   members){
45          Collection col = (Collection)object;
46          col.clear();
47          if(members != null){
48              Object  [] elements = (Object  []) members;
49              for(int i = 0; i < elements.length; i++){
50                  col.add(elements[i]);
51              }
52          }
53      }
54  
55      public Class   storedClass(){
56          return Object  [].class;
57      }
58  }
59
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