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