CLAM-Development  1.4.0
AttributePool.hxx
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1 /*
2  * Copyright (c) 2004 MUSIC TECHNOLOGY GROUP (MTG)
3  * UNIVERSITAT POMPEU FABRA
4  *
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program 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
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  *
20  */
21 
22 #ifndef _AttributePool_hxx_
23 #define _AttributePool_hxx_
24 
26 
27 namespace CLAM
28 {
33  class AttributePool : public Component
34  {
35  public:
37  {
38  _data=0;
39  _size=0;
40  _attribute=0;
41  }
42  void SetDefinition(const AbstractAttribute & attribute)
43  {
44  _attribute = & attribute;
45  }
46  const char * GetClassName() const { return "AttributePool"; }
47  void StoreOn(Storage & storage) const
48  {
49  _attribute->XmlDumpData(storage, _data, _size);
50  }
51  void LoadFrom(Storage & storage)
52  {
53  _attribute->XmlRestoreData(storage, _data, _size);
54  }
55  void * GetData() { return _data; }
56  const void * GetData() const { return _data; }
57  void Allocate(unsigned size)
58  {
59  _data = _attribute->Allocate(size);
60  _size=size;
61  }
62  void Deallocate()
63  {
64  if (!_data) return;
65  _attribute->Deallocate(_data);
66  _data = 0;
67  }
68  void Insert(unsigned pos)
69  {
70  _size++;
71  if (_data)
72  _attribute->Insert(_data,pos);
73  }
74  void Remove(unsigned pos)
75  {
76  _size--;
77  if (_data)
78  _attribute->Remove(_data,pos);
79  }
80  private:
81  void * _data;
82  const AbstractAttribute * _attribute;
83  unsigned _size;
84  };
85 }
86 
87 
88 #endif// _AttributePool_hxx_
89