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Diffstat (limited to 'src/partition/jsondbobjecttable.h')
| -rw-r--r-- | src/partition/jsondbobjecttable.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/src/partition/jsondbobjecttable.h b/src/partition/jsondbobjecttable.h new file mode 100644 index 0000000..a98b6b4 --- /dev/null +++ b/src/partition/jsondbobjecttable.h @@ -0,0 +1,178 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the QtAddOn.JsonDb module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef JSONDB_OBJECT_TABLE_H +#define JSONDB_OBJECT_TABLE_H + +#include <QObject> +#include <QHash> +#include <QList> +#include <QPair> +#include <QtEndian> + +#include "jsondbobjectkey.h" +#include "jsondbbtree.h" + +#include <qjsonarray.h> +#include <qjsonobject.h> +#include <qjsonvalue.h> + +#include <jsondbobject.h> +#include "jsondbpartition.h" +#include "jsondbindex.h" + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE_JSONDB_PARTITION + +class JsonDbBtree; + +inline QDebug &operator<<(QDebug &qdb, const JsonDbUpdate &oc) +{ + qdb.nospace() << "JsonDbUpdate("; + //qdb.nospace() << oc.objectKey; + qdb.nospace() << "action = "; + switch (oc.action) { + case JsonDbNotification::None: qdb.nospace() << "None"; break; + case JsonDbNotification::Create: qdb.nospace() << "Created"; break; + case JsonDbNotification::Update: qdb.nospace() << "Updated"; break; + case JsonDbNotification::Delete: qdb.nospace() << "Deleted"; break; + } + if (oc.action != JsonDbNotification::Create) + qdb.nospace() << ", oldObject = " << oc.oldObject; + qdb.nospace() << ")"; + return qdb; +} + + +class Q_JSONDB_PARTITION_EXPORT JsonDbObjectTable : public QObject +{ + Q_OBJECT +public: + enum SyncFlag { + SyncObjectTable = 0x1, + SyncIndexes = 0x2 + }; + Q_DECLARE_FLAGS(SyncFlags, SyncFlag) + + JsonDbObjectTable(JsonDbPartition *parent=0); + ~JsonDbObjectTable(); + + QString filename() const { return mFilename; } + bool open(const QString &filename); + void close(); + JsonDbPartition *partition() const { return mPartition; } + JsonDbBtree *bdb() const { return mBdb; } + bool begin(); + void begin(JsonDbIndex *btree); + bool commit(quint32); + bool abort(); + bool compact(); + void sync(SyncFlags flags); + + JsonDbStat stat() const; + void flushCaches(); + + quint32 stateNumber() const { return mStateNumber; } + quint32 storeStateChange(const ObjectKey &key, const JsonDbUpdate &stateChange); + enum TypeChangeMode { + SplitTypeChanges, KeepTypeChanges + }; + quint32 changesSince(quint32 stateNumber, const QSet<QString> &limitTypes, QList<JsonDbUpdate> *updateList, TypeChangeMode mode=KeepTypeChanges); + + IndexSpec *indexSpec(const QString &indexName); + QHash<QString, IndexSpec> indexSpecs() const; + + bool addIndex(const QString &indexName, + const QString &propertyName = QString(), + const QString &propertyType = QString("string"), + const QStringList &objectTypes = QStringList(), + const QString &propertyFunction = QString(), + const QString &locale = QString(), + const QString &collation = QString(), + const QString &casePreference = QString(), + Qt::CaseSensitivity caseSensitivity = Qt::CaseSensitive); + bool addIndexOnProperty(const QString &propertyName, + const QString &propertyType = QString("string"), + const QString &objectType = QString()) + { return addIndex(propertyName, propertyName, propertyType, + objectType.isEmpty() ? QStringList() : (QStringList() << objectType)); } + bool removeIndex(const QString &indexName); + void reindexObjects(const QString &indexName, const QStringList &path, quint32 stateNumber); + void indexObject(const ObjectKey &objectKey, JsonDbObject object, quint32 stateNumber); + void deindexObject(const ObjectKey &objectKey, JsonDbObject object, quint32 stateNumber); + void updateIndex(JsonDbIndex *index); + + bool get(const ObjectKey &objectKey, QJsonObject *object, bool includeDeleted=false); + bool put(const ObjectKey &objectKey, const JsonDbObject &object); + bool remove(const ObjectKey &objectKey); + + QString errorMessage() const; + + GetObjectsResult getObjects(const QString &keyName, const QJsonValue &keyValue, const QString &objectType); + +private: + quint32 changesSince(quint32 stateNumber, QMap<ObjectKey,JsonDbUpdate> *changes); + +private: + JsonDbPartition *mPartition; + QString mFilename; + JsonDbBtree *mBdb; + QHash<QString,IndexSpec> mIndexes; // indexed by full path, e.g., _type or _name.first + QVector<JsonDbBtree::Transaction *> mBdbTransactions; + + quint32 mStateNumber; + + // intermediate state changes until the commit is called + QByteArray mStateChanges; + QList<JsonDbObject> mStateObjectChanges; +}; + +void makeStateKey(QByteArray &baStateKey, quint32 stateNumber); +bool isStateKey(const QByteArray &baStateKey); + +Q_DECLARE_OPERATORS_FOR_FLAGS(JsonDbObjectTable::SyncFlags) + +QT_END_NAMESPACE_JSONDB_PARTITION + +QT_END_HEADER + +#endif // JSONDB_OBJECT_TABLE_H |