1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_ITERATOR_H_ 6 #define CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_ITERATOR_H_ 7 8 #include "base/strings/string_piece.h" 9 #include "third_party/leveldatabase/src/include/leveldb/status.h" 10 11 namespace content { 12 13 class LevelDBIterator { 14 public: ~LevelDBIterator()15 virtual ~LevelDBIterator() {} 16 virtual bool IsValid() const = 0; 17 virtual leveldb::Status SeekToLast() = 0; 18 virtual leveldb::Status Seek(const base::StringPiece& target) = 0; 19 virtual leveldb::Status Next() = 0; 20 virtual leveldb::Status Prev() = 0; 21 virtual base::StringPiece Key() const = 0; 22 virtual base::StringPiece Value() const = 0; 23 }; 24 25 } // namespace content 26 27 #endif // CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_ITERATOR_H_ 28