rocksdb/util/set_comparator.h
Maysam Yabandeh 62277e15c3 WritePrepared Txn: Move DuplicateDetector to util
Summary:
Move DuplicateDetector and SetComparator to its own header file in util. It would also address a complaint in the unity test.
Closes https://github.com/facebook/rocksdb/pull/3567

Differential Revision: D7163268

Pulled By: maysamyabandeh

fbshipit-source-id: 6ddf82773473646dbbc1284ae601a78c4907c778
2018-03-05 23:57:12 -08:00

23 lines
809 B
C++

// Copyright (c) 2011-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
namespace rocksdb {
// A comparator to be used in std::set
struct SetComparator {
explicit SetComparator() : user_comparator_(BytewiseComparator()) {}
explicit SetComparator(const Comparator* user_comparator)
: user_comparator_(user_comparator ? user_comparator
: BytewiseComparator()) {}
bool operator()(const Slice& lhs, const Slice& rhs) const {
return user_comparator_->Compare(lhs, rhs) < 0;
}
private:
const Comparator* user_comparator_;
};
} // namespace rocksdb