1/*
2 Copyright (c) 2007 Till Adam <adam@kde.org>
3
4 This library is free software; you can redistribute it and/or modify it
5 under the terms of the GNU Library General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or (at your
7 option) any later version.
8
9 This library is distributed in the hope that it will be useful, but WITHOUT
10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
12 License for more details.
13
14 You should have received a copy of the GNU Library General Public License
15 along with this library; see the file COPYING.LIB. If not, write to the
16 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 02110-1301, USA.
18*/
19
20
21#ifndef __AKONADI_SERIALIZER_MAIL_H__
22#define __AKONADI_SERIALIZER_MAIL_H__
23
24#include <QtCore/QObject>
25#include <QtCore/QMutex>
26
27#include <akonadi/itemserializerplugin.h>
28#include <akonadi/gidextractorinterface.h>
29
30namespace Akonadi {
31
32/**
33 * Levare QString implicit sharing to decrease memory consumption.
34 *
35 * This class is thread safe. Apparenlty required for usage in
36 * legacy KRes compat bridges.
37 */
38class StringPool
39{
40public:
41 /**
42 * Lookup @p value in the pool and return the known value
43 * to reuse it and leverage the implicit sharing. Otherwise
44 * add the value to the pool and return it again.
45 */
46 QString sharedValue(const QString& value);
47private:
48 QMutex m_mutex;
49 QSet<QString> m_pool;
50};
51
52class SerializerPluginMail : public QObject, public ItemSerializerPlugin, public GidExtractorInterface
53{
54 Q_OBJECT
55 Q_INTERFACES( Akonadi::ItemSerializerPlugin Akonadi::GidExtractorInterface)
56
57public:
58 bool deserialize( Item& item, const QByteArray& label, QIODevice& data, int version );
59 void serialize( const Item& item, const QByteArray& label, QIODevice& data, int &version );
60 QSet<QByteArray> parts( const Item &item ) const;
61 QString extractGid(const Item& item) const;
62private:
63 StringPool m_stringPool;
64};
65
66
67}
68
69#endif
70