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 LevelDBIterator_h 27 #define LevelDBIterator_h 28 29 #if ENABLE(LEVELDB) 30 31 #include "LevelDBSlice.h" 32 #include "PlatformString.h" 33 #include <OwnPtr.h> 34 #include <Vector.h> 35 36 namespace leveldb { 37 class Iterator; 38 } 39 40 namespace WebCore { 41 42 class LevelDBIterator { 43 public: 44 ~LevelDBIterator(); 45 46 bool isValid() const; 47 void seekToLast(); 48 void seek(const Vector<char>& target); 49 void next(); 50 void prev(); 51 LevelDBSlice key() const; 52 LevelDBSlice value() const; 53 54 private: 55 LevelDBIterator(leveldb::Iterator*); 56 friend class LevelDBDatabase; 57 58 OwnPtr<leveldb::Iterator> m_iterator; 59 }; 60 61 62 } // namespace WebCore 63 64 #endif // ENABLE(LEVELDB) 65 #endif // LevelDBIterator_h 66
