git / moonbite-core / src/leveldb/db/write_batch_internal.h · raw

// Copyright (c) 2011 The LevelDB Authors. All rights reserved.// Use of this source code is governed by a BSD-style license that can be// found in the LICENSE file. See the AUTHORS file for names of contributors.#ifndef STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_#define STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_#include "db/dbformat.h"#include "leveldb/write_batch.h"namespace leveldb {class MemTable;// WriteBatchInternal provides static methods for manipulating a// WriteBatch that we don't want in the public WriteBatch interface.class WriteBatchInternal { public:  // Return the number of entries in the batch.  static int Count(const WriteBatch* batch);  // Set the count for the number of entries in the batch.  static void SetCount(WriteBatch* batch, int n);  // Return the sequence number for the start of this batch.  static SequenceNumber Sequence(const WriteBatch* batch);  // Store the specified number as the sequence number for the start of  // this batch.  static void SetSequence(WriteBatch* batch, SequenceNumber seq);  static Slice Contents(const WriteBatch* batch) { return Slice(batch->rep_); }  static size_t ByteSize(const WriteBatch* batch) { return batch->rep_.size(); }  static void SetContents(WriteBatch* batch, const Slice& contents);  static Status InsertInto(const WriteBatch* batch, MemTable* memtable);  static void Append(WriteBatch* dst, const WriteBatch* src);};}  // namespace leveldb#endif  // STORAGE_LEVELDB_DB_WRITE_BATCH_INTERNAL_H_