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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_DATABASE_H_
#define CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_DATABASE_H_
#include <vector>
#include "base/files/file_path.h"
#include "base/memory/scoped_ptr.h"
#include "base/string16.h"
#include "content/common/content_export.h"
namespace leveldb {
class Comparator;
class DB;
class Env;
class Snapshot;
}
namespace content {
class LevelDBComparator;
class LevelDBDatabase;
class LevelDBIterator;
class LevelDBSlice;
class LevelDBWriteBatch;
class LevelDBSnapshot {
private:
friend class LevelDBDatabase;
friend class LevelDBTransaction;
explicit LevelDBSnapshot(LevelDBDatabase* db);
~LevelDBSnapshot();
leveldb::DB* db_;
const leveldb::Snapshot* snapshot_;
};
class CONTENT_EXPORT LevelDBDatabase {
public:
static scoped_ptr<LevelDBDatabase> Open(const base::FilePath& file_name,
const LevelDBComparator* comparator);
static scoped_ptr<LevelDBDatabase> OpenInMemory(
const LevelDBComparator* comparator);
static bool Destroy(const base::FilePath& file_name);
virtual ~LevelDBDatabase();
bool Put(const LevelDBSlice& key, const std::vector<char>& value);
bool Remove(const LevelDBSlice& key);
virtual bool Get(const LevelDBSlice& key,
std::vector<char>& value,
bool& found,
const LevelDBSnapshot* = 0);
bool Write(LevelDBWriteBatch& batch);
scoped_ptr<LevelDBIterator> CreateIterator(const LevelDBSnapshot* = 0);
const LevelDBComparator* Comparator() const;
protected:
LevelDBDatabase();
private:
friend class LevelDBSnapshot;
scoped_ptr<leveldb::Env> env_;
scoped_ptr<leveldb::Comparator> comparator_adapter_;
scoped_ptr<leveldb::DB> db_;
const LevelDBComparator* comparator_;
};
} // namespace content
#endif // CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_DATABASE_H_
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