mirror of https://gitee.com/bigwinds/arangodb
57 lines
2.0 KiB
C++
57 lines
2.0 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Jan Steemann
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGOD_MMFILES_MMFILES_PERSISTENT_INDEX_KEY_COMPARATOR_H
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#define ARANGOD_MMFILES_MMFILES_PERSISTENT_INDEX_KEY_COMPARATOR_H 1
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#include "Basics/Common.h"
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#include "MMFiles/MMFilesPersistentIndex.h"
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#include <rocksdb/comparator.h>
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#include <rocksdb/slice.h>
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#include <velocypack/Slice.h>
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namespace arangodb {
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class MMFilesPersistentIndexKeyComparator final : public rocksdb::Comparator {
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public:
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MMFilesPersistentIndexKeyComparator() = default;
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~MMFilesPersistentIndexKeyComparator() = default;
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static inline arangodb::velocypack::Slice extractKeySlice(rocksdb::Slice const& slice) {
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return arangodb::velocypack::Slice(reinterpret_cast<uint8_t const*>(slice.data() + MMFilesPersistentIndex::keyPrefixSize()));
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}
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int Compare(rocksdb::Slice const& lhs, rocksdb::Slice const& rhs) const override;
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char const* Name() const override { return "ArangoComparator"; }
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void FindShortestSeparator(std::string*, rocksdb::Slice const&) const override {}
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void FindShortSuccessor(std::string*) const override {}
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};
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} // namespace arangodb
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#endif
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