leveldb_iterator.h revision 116680a4aac90f2aa7413d9095a592090648e557 
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 "content/common/content_export.h"
10#include "third_party/leveldatabase/src/include/leveldb/status.h"
11
12namespace content {
13
14class CONTENT_EXPORT LevelDBIterator {
15 public:
16  virtual ~LevelDBIterator() {}
17  virtual bool IsValid() const = 0;
18  virtual leveldb::Status SeekToLast() = 0;
19  virtual leveldb::Status Seek(const base::StringPiece& target) = 0;
20  virtual leveldb::Status Next() = 0;
21  virtual leveldb::Status Prev() = 0;
22  virtual base::StringPiece Key() const = 0;
23  virtual base::StringPiece Value() const = 0;
24};
25
26}  // namespace content
27
28#endif  // CONTENT_BROWSER_INDEXED_DB_LEVELDB_LEVELDB_ITERATOR_H_
29