1/* 2 * Copyright (C) 2011 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef LevelDBWriteBatch_h 27#define LevelDBWriteBatch_h 28 29#if USE(LEVELDB) 30 31#include <wtf/OwnPtr.h> 32#include <wtf/PassOwnPtr.h> 33 34namespace leveldb { 35class WriteBatch; 36} 37 38namespace WebCore { 39 40class LevelDBSlice; 41 42// Wrapper around leveldb::WriteBatch. 43// This class holds a collection of updates to apply atomically to a database. 44class LevelDBWriteBatch { 45public: 46 static PassOwnPtr<LevelDBWriteBatch> create(); 47 ~LevelDBWriteBatch(); 48 49 void put(const LevelDBSlice& key, const LevelDBSlice& value); 50 void remove(const LevelDBSlice& key); // Add remove operation to the batch. 51 void clear(); 52 53private: 54 friend class LevelDBDatabase; 55 LevelDBWriteBatch(); 56 57 OwnPtr<leveldb::WriteBatch> m_writeBatch; 58}; 59 60} 61 62#endif // USE(LEVELDB) 63 64#endif // LevelDBWriteBatch_h 65