content/browser/indexed_db/leveldb/leveldb_iterator.h

   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
  12 namespace content {
  13
  14 class 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_