mirror of https://gitee.com/bigwinds/arangodb
79 lines
2.6 KiB
C++
79 lines
2.6 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_ROCKSDB_ROCKSDB_TTL_INDEX_H
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#define ARANGOD_ROCKSDB_ROCKSDB_TTL_INDEX_H 1
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#include "RocksDBSkiplistIndex.h"
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namespace arangodb {
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class LogicalCollection;
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class RocksDBMethods;
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namespace velocypack {
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class Builder;
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class Slice;
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}
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class RocksDBTtlIndex final : public RocksDBSkiplistIndex {
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public:
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RocksDBTtlIndex(
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TRI_idx_iid_t iid,
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LogicalCollection& coll,
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arangodb::velocypack::Slice const& info
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);
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IndexType type() const override { return Index::TRI_IDX_TYPE_TTL_INDEX; }
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char const* typeName() const override { return "rocksdb-ttl"; }
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bool matchesDefinition(VPackSlice const&) const override;
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void toVelocyPack(arangodb::velocypack::Builder& builder,
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std::underlying_type<Index::Serialize>::type flags) const override;
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protected:
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// special override method that extracts a timestamp value from the index attribute
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Result insert(transaction::Methods& trx, RocksDBMethods* methods,
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LocalDocumentId const& documentId,
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velocypack::Slice const& doc, Index::OperationMode mode) override;
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// special override method that extracts a timestamp value from the index attribute
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Result remove(transaction::Methods& trx, RocksDBMethods* methods,
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LocalDocumentId const& documentId,
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velocypack::Slice const& doc, Index::OperationMode mode) override;
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private:
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/// @brief extract a timestamp value from the index attribute value
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/// returns a negative timestamp if the index attribute value is not convertible
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/// properly into a timestamp
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double getTimestamp(arangodb::velocypack::Slice const& doc) const;
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private:
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double const _expireAfter;
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};
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}
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#endif
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