mirror of https://gitee.com/bigwinds/arangodb
89 lines
3.3 KiB
C++
89 lines
3.3 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_COLLECTION_KEYS_H
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#define ARANGOD_MMFILES_MMFILES_COLLECTION_KEYS_H 1
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#include "Basics/Common.h"
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#include "Utils/CollectionKeys.h"
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#include "Utils/CollectionNameResolver.h"
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#include "VocBase/voc-types.h"
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#include <velocypack/Builder.h>
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#include <velocypack/Slice.h>
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#include <velocypack/velocypack-aliases.h>
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struct TRI_vocbase_t;
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namespace arangodb {
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class CollectionGuard;
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class MMFilesDocumentDitch;
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typedef TRI_voc_tick_t CollectionKeysId;
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class MMFilesCollectionKeys final : public CollectionKeys {
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public:
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MMFilesCollectionKeys(MMFilesCollectionKeys const&) = delete;
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MMFilesCollectionKeys& operator=(MMFilesCollectionKeys const&) = delete;
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MMFilesCollectionKeys(TRI_vocbase_t& vocbase, std::unique_ptr<CollectionGuard> guard,
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TRI_voc_tick_t blockerId, double ttl);
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~MMFilesCollectionKeys();
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size_t count() const override { return _vpack.size(); }
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//////////////////////////////////////////////////////////////////////////////
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/// @brief initially creates the list of keys
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//////////////////////////////////////////////////////////////////////////////
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void create(TRI_voc_tick_t) override;
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//////////////////////////////////////////////////////////////////////////////
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/// @brief hashes a chunk of keys
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//////////////////////////////////////////////////////////////////////////////
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std::tuple<std::string, std::string, uint64_t> hashChunk(size_t, size_t) const override;
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//////////////////////////////////////////////////////////////////////////////
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/// @brief dumps keys into the result
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//////////////////////////////////////////////////////////////////////////////
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void dumpKeys(arangodb::velocypack::Builder&, size_t, size_t) const override;
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//////////////////////////////////////////////////////////////////////////////
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/// @brief dumps documents into the result
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//////////////////////////////////////////////////////////////////////////////
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void dumpDocs(arangodb::velocypack::Builder& result, size_t chunk,
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size_t chunkSize, size_t offsetInChunk, size_t maxChunkSize,
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arangodb::velocypack::Slice const& ids) const override;
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private:
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std::unique_ptr<arangodb::CollectionGuard> _guard;
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arangodb::MMFilesDocumentDitch* _ditch;
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arangodb::CollectionNameResolver _resolver;
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TRI_voc_tick_t _blockerId;
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std::vector<uint8_t const*> _vpack;
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};
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} // namespace arangodb
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#endif |