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 | |
30 | namespace 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 | */ |
38 | class StringPool |
39 | { |
40 | public: |
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); |
47 | private: |
48 | QMutex m_mutex; |
49 | QSet<QString> m_pool; |
50 | }; |
51 | |
52 | class SerializerPluginMail : public QObject, public ItemSerializerPlugin, public GidExtractorInterface |
53 | { |
54 | Q_OBJECT |
55 | Q_INTERFACES( Akonadi::ItemSerializerPlugin Akonadi::GidExtractorInterface) |
56 | |
57 | public: |
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 (const Item& item) const; |
62 | private: |
63 | StringPool m_stringPool; |
64 | }; |
65 | |
66 | |
67 | } |
68 | |
69 | #endif |
70 | |