mirror of https://gitee.com/bigwinds/arangodb
77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2017 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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/// @author Daniel H. Larkin
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGO_ROCKSDB_ROCKSDB_COMPARATOR_H
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#define ARANGO_ROCKSDB_ROCKSDB_COMPARATOR_H 1
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#include "Basics/Common.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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#include <velocypack/velocypack-aliases.h>
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namespace arangodb {
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class RocksDBComparator final : public rocksdb::Comparator {
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public:
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RocksDBComparator();
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~RocksDBComparator();
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int Compare(rocksdb::Slice const& lhs, rocksdb::Slice const& rhs) const;
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char const* Name() const;
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void FindShortestSeparator(std::string*, rocksdb::Slice const&) const {}
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void FindShortSuccessor(std::string*) const {}
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private:
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int compareType(rocksdb::Slice const& lhs, rocksdb::Slice const& rhs) const;
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int compareDatabases(rocksdb::Slice const& lhs,
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rocksdb::Slice const& rhs) const;
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int compareCollections(rocksdb::Slice const& lhs,
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rocksdb::Slice const& rhs) const;
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int compareIndexes(rocksdb::Slice const& lhs,
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rocksdb::Slice const& rhs) const;
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int compareDocuments(rocksdb::Slice const& lhs,
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rocksdb::Slice const& rhs) const;
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int compareIndexValues(rocksdb::Slice const& lhs,
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rocksdb::Slice const& rhs) const;
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int compareUniqueIndexValues(rocksdb::Slice const& lhs,
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rocksdb::Slice const& rhs) const;
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int compareViews(rocksdb::Slice const& lhs, rocksdb::Slice const& rhs) const;
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int compareLexicographic(rocksdb::Slice const& lhs,
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rocksdb::Slice const& rhs) const;
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int compareIndexedValues(VPackSlice const& lhs, VPackSlice const& rhs) const;
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VPackSlice extractIndexedValues(rocksdb::Slice const& key) const;
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private:
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const std::string _name;
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};
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} // namespace arangodb
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#endif
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