1 // Copyright (c) 2011 The LevelDB 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. See the AUTHORS file for names of contributors.
5 #ifndef STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_
6 #define STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_
8 #include "leveldb/write_batch.h"
14 // WriteBatchInternal provides static methods for manipulating a
15 // WriteBatch that we don't want in the public WriteBatch interface.
16 class WriteBatchInternal {
18 // Return the number of entries in the batch.
19 static int Count(const WriteBatch* batch);
21 // Set the count for the number of entries in the batch.
22 static void SetCount(WriteBatch* batch, int n);
24 // Return the seqeunce number for the start of this batch.
25 static SequenceNumber Sequence(const WriteBatch* batch);
27 // Store the specified number as the seqeunce number for the start of
29 static void SetSequence(WriteBatch* batch, SequenceNumber seq);
31 static Slice Contents(const WriteBatch* batch) {
32 return Slice(batch->rep_);
35 static size_t ByteSize(const WriteBatch* batch) {
36 return batch->rep_.size();
39 static void SetContents(WriteBatch* batch, const Slice& contents);
41 static Status InsertInto(const WriteBatch* batch, MemTable* memtable);
43 static void Append(WriteBatch* dst, const WriteBatch* src);
46 } // namespace leveldb
49 #endif // STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_