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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef LevelDBDatabase_h
#define LevelDBDatabase_h
#if USE(LEVELDB)
#include <wtf/OwnPtr.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/Vector.h>
#include <wtf/text/WTFString.h>
namespace leveldb {
class Comparator;
class DB;
class Env;
class Snapshot;
}
namespace WebCore {
class LevelDBComparator;
class LevelDBDatabase;
class LevelDBIterator;
class LevelDBSlice;
class LevelDBWriteBatch;
class LevelDBSnapshot {
private:
friend class LevelDBDatabase;
friend class LevelDBTransaction;
explicit LevelDBSnapshot(LevelDBDatabase*);
~LevelDBSnapshot();
leveldb::DB* m_db;
const leveldb::Snapshot* m_snapshot;
};
class LevelDBDatabase {
public:
static PassOwnPtr<LevelDBDatabase> open(const String& fileName, const LevelDBComparator*);
static PassOwnPtr<LevelDBDatabase> openInMemory(const LevelDBComparator*);
static bool destroy(const String& fileName);
virtual ~LevelDBDatabase();
bool put(const LevelDBSlice& key, const Vector<char>& value);
bool remove(const LevelDBSlice& key);
virtual bool safeGet(const LevelDBSlice& key, Vector<char>& value, bool& found, const LevelDBSnapshot* = 0);
bool write(LevelDBWriteBatch&);
PassOwnPtr<LevelDBIterator> createIterator(const LevelDBSnapshot* = 0);
const LevelDBComparator* comparator() const;
protected:
LevelDBDatabase();
private:
friend class LevelDBSnapshot;
OwnPtr<leveldb::Env> m_env;
OwnPtr<leveldb::Comparator> m_comparatorAdapter;
OwnPtr<leveldb::DB> m_db;
const LevelDBComparator* m_comparator;
};
}
#endif
#endif
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