rocksdb/table/block_based_table_factory.h
kailiu 56589ab81f Add TableOptions for BlockBasedTableFactory
We are having more and more options to specify for this table so it makes sense to have a TableOptions for future extension.
2013-11-20 18:42:12 -08:00

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2.2 KiB
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// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
// 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.
#pragma once
#include <memory>
#include <stdint.h>
#include "rocksdb/flush_block_policy.h"
#include "rocksdb/options.h"
#include "rocksdb/table.h"
namespace rocksdb {
struct Options;
struct EnvOptions;
using std::unique_ptr;
class Status;
class RandomAccessFile;
class WritableFile;
class Table;
class TableBuilder;
class BlockBasedTable;
class BlockBasedTableBuilder;
class BlockBasedTableFactory: public TableFactory {
public:
struct TableOptions {
// @flush_block_policy_factory creates the instances of flush block policy.
// which provides a configurable way to determine when to flush a block in
// the block based tables. If not set, table builder will use the default
// block flush policy, which cut blocks by block size (please refer to
// `FlushBlockBySizePolicy`).
std::shared_ptr<FlushBlockPolicyFactory> flush_block_policy_factory;
};
BlockBasedTableFactory() : BlockBasedTableFactory(TableOptions()) { }
BlockBasedTableFactory(const TableOptions& table_options):
table_options_(table_options) {
}
~BlockBasedTableFactory() {
}
const char* Name() const override {
return "BlockBasedTable";
}
Status GetTableReader(const Options& options, const EnvOptions& soptions,
unique_ptr<RandomAccessFile> && file,
uint64_t file_size,
unique_ptr<TableReader>* table_reader) const override;
TableBuilder* GetTableBuilder(const Options& options, WritableFile* file,
CompressionType compression_type) const
override;
private:
TableOptions table_options_;
};
} // namespace rocksdb