mirror of https://gitee.com/bigwinds/arangodb
101 lines
3.7 KiB
C++
101 lines
3.7 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2018 ArangoDB 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 Christoph Uhde
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGOD_AQL_SINGLE_REMOTE_MODIFICATION_EXECUTOR_H
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#define ARANGOD_AQL_SINGLE_REMOTE_MODIFICATION_EXECUTOR_H 1
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#include "Aql/ModificationExecutor.h"
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namespace arangodb {
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namespace aql {
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struct SingleRemoteModificationInfos : ModificationExecutorInfos {
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SingleRemoteModificationInfos(
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RegisterId inputRegister, RegisterId outputNewRegisterId,
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RegisterId outputOldRegisterId, RegisterId outputRegisterId,
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RegisterId nrInputRegisters, RegisterId nrOutputRegisters,
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std::unordered_set<RegisterId> const& registersToClear,
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std::unordered_set<RegisterId>&& registersToKeep, transaction::Methods* trx,
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OperationOptions options, aql::Collection const* aqlCollection,
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ConsultAqlWriteFilter consultAqlWriteFilter, IgnoreErrors ignoreErrors,
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IgnoreDocumentNotFound ignoreDocumentNotFound, // end of base class params
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std::string key, bool hasParent, bool replaceIndex)
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: ModificationExecutorInfos(inputRegister, ExecutionNode::MaxRegisterId,
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ExecutionNode::MaxRegisterId, outputNewRegisterId,
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outputOldRegisterId, outputRegisterId,
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nrInputRegisters, nrOutputRegisters,
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registersToClear, std::move(registersToKeep),
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trx, std::move(options), aqlCollection,
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ProducesResults(false), consultAqlWriteFilter,
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ignoreErrors, DoCount(true), IsReplace(false),
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ignoreDocumentNotFound),
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_key(std::move(key)),
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_hasParent(hasParent),
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_replaceIndex(replaceIndex) {}
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std::string _key;
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bool _hasParent; // node->hasParent();
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bool _replaceIndex;
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constexpr static double const defaultTimeOut = 3600.0;
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};
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struct IndexTag {};
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template <typename Modifier>
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struct SingleRemoteModificationExecutor {
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struct Properties {
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static const bool preservesOrder = true;
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static const bool allowsBlockPassthrough = false;
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static const bool inputSizeRestrictsOutputSize = false;
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};
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using Infos = SingleRemoteModificationInfos;
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using Fetcher = SingleRowFetcher<Properties::allowsBlockPassthrough>;
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using Stats = SingleRemoteModificationStats;
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using Modification = Modifier;
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SingleRemoteModificationExecutor(Fetcher&, Infos&);
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~SingleRemoteModificationExecutor() = default;
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/**
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* @brief produce the next Row of Aql Values.
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*
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* @return ExecutionState,
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* if something was written output.hasValue() == true
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*/
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std::pair<ExecutionState, Stats> produceRows(OutputAqlItemRow& output);
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protected:
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bool doSingleRemoteModificationOperation(InputAqlItemRow&, OutputAqlItemRow&, Stats&);
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Infos& _info;
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Fetcher& _fetcher;
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ExecutionState _upstreamState;
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};
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} // namespace aql
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} // namespace arangodb
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#endif
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