1 files changed, 164 insertions, 0 deletions
diff --git a/src/partition/jsondbbtree.cpp b/src/partition/jsondbbtree.cpp
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+/****************************************************************************
+**
+** 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.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QDebug>
+#include <QFile>
+#include <errno.h>
+
+#include "jsondbbtree.h"
+#include "jsondbsettings.h"
+
+QT_BEGIN_NAMESPACE_JSONDB_PARTITION
+
+JsonDbBtree::JsonDbBtree()
+    : mBtree(new Btree())
+{
+#ifndef JSONDB_USE_HBTREE
+    mBtree->setAutoCompactRate(jsondbSettings->compactRate());
+#endif
+}
+
+JsonDbBtree::~JsonDbBtree()
+{
+    close();
+    delete mBtree;
+}
+
+bool JsonDbBtree::open(const QString &filename, OpenFlags flags)
+{
+    mBtree->setFileName(filename);
+#ifdef JSONDB_USE_HBTREE
+    HBtree::OpenMode mode = HBtree::ReadWrite;
+    if (flags & ReadOnly)
+        mode = HBtree::ReadOnly;
+    mBtree->setOpenMode(mode);
+    return mBtree->open();
+#else
+    QBtree::DbFlags dbFlags = QBtree::UseSyncMarker | QBtree::NoSync;
+    if (flags & ReadOnly)
+        dbFlags |= QBtree::ReadOnly;
+    return mBtree->open(flags);
+#endif
+}
+
+void JsonDbBtree::close()
+{
+    Q_ASSERT(mBtree);
+    mBtree->close();
+}
+
+bool JsonDbBtree::putOne(const QByteArray &key, const QByteArray &value)
+{
+    bool inTransaction = mBtree->isWriting();
+    Transaction *txn = inTransaction ? mBtree->writeTransaction() : mBtree->beginWrite();
+    bool ok = txn->put(key, value);
+    if (!inTransaction) {
+        qWarning() << "JsonDbBtree::putOne" << "auto commiting tag 0";
+        ok &= txn->commit(0);
+    }
+    return ok;
+}
+
+bool JsonDbBtree::getOne(const QByteArray &key, QByteArray *value)
+{
+    bool inTransaction = mBtree->isWriting();
+    Transaction *txn = inTransaction ? mBtree->writeTransaction() : mBtree->beginWrite();
+    bool ok = txn->get(key, value);
+    if (!inTransaction)
+        txn->abort();
+    return ok;
+}
+
+bool JsonDbBtree::removeOne(const QByteArray &key)
+{
+    bool inTransaction = mBtree->isWriting();
+    Transaction *txn = inTransaction ? mBtree->writeTransaction() : mBtree->beginWrite();
+    bool ok = txn->remove(key);
+    if (!inTransaction){
+        qWarning() << "JsonDbBtree::removeOne" << "auto commiting tag 0";
+        ok &= txn->commit(0);
+    }
+    return ok;
+}
+
+bool JsonDbBtree::clearData()
+{
+    Q_ASSERT(isWriting() == false);
+    close();
+    QFile::remove(mBtree->fileName());
+    return mBtree->open();
+}
+
+bool JsonDbBtree::compact()
+{
+    Q_ASSERT(mBtree);
+#ifdef JSONDB_USE_HBTREE
+    return true;
+#else
+    return mBtree->compact();
+#endif
+}
+
+bool JsonDbBtree::rollback()
+{
+    Q_ASSERT(mBtree && !isWriting());
+    return mBtree->rollback();
+}
+
+void JsonDbBtree::setAutoCompactRate(int rate) const
+{
+    Q_ASSERT(mBtree);
+#ifdef JSONDB_USE_HBTREE
+    Q_UNUSED(rate);
+#else
+    mBtree->setAutoCompactRate(rate);
+#endif
+}
+
+JsonDbBtree::Stat JsonDbBtree::stats() const
+{
+    if (mBtree)
+        return mBtree->stats();
+    else
+      return Stat();
+}
+
+QT_END_NAMESPACE_JSONDB_PARTITION