blob: 28066ca05912c7ef73c9da6b8ed7da9e8b1f200a [file] [log] [blame]
// Copyright (c) 2017-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
#pragma once
#include "rocksdb/merge_operator.h"
#include "rocksdb/slice.h"
namespace rocksdb {
namespace cassandra {
* A MergeOperator for rocksdb that implements Cassandra row value merge.
class CassandraValueMergeOperator : public MergeOperator {
static std::shared_ptr<MergeOperator> CreateSharedInstance();
virtual bool FullMergeV2(const MergeOperationInput& merge_in,
MergeOperationOutput* merge_out) const override;
virtual bool PartialMergeMulti(const Slice& key,
const std::deque<Slice>& operand_list,
std::string* new_value,
Logger* logger) const override;
virtual const char* Name() const override;
virtual bool AllowSingleOperand() const override { return true; }
} // namespace cassandra
} // namespace rocksdb