mirror of https://gitee.com/bigwinds/arangodb
66 lines
2.1 KiB
C++
66 lines
2.1 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_AQL_BASE_EXPRESSION_CONTEXT_H
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#define ARANGOD_AQL_BASE_EXPRESSION_CONTEXT_H 1
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#include "QueryExpressionContext.h"
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namespace arangodb {
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namespace aql {
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class AqlItemBlock;
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class Query;
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class BaseExpressionContext final : public QueryExpressionContext {
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public:
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BaseExpressionContext(Query* query, size_t startPos, AqlItemBlock const* argv,
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std::vector<Variable const*> const& vars,
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std::vector<RegisterId> const& regs)
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: QueryExpressionContext(query),
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_startPos(startPos),
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_argv(argv),
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_vars(&vars),
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_regs(®s) {}
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~BaseExpressionContext() {}
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size_t numRegisters() const override { return _regs->size(); }
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AqlValue const& getRegisterValue(size_t i) const override;
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Variable const* getVariable(size_t i) const override;
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AqlValue getVariableValue(Variable const* variable, bool doCopy,
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bool& mustDestroy) const override;
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private:
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/// @brief temporary storage for expression data context
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size_t _startPos;
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AqlItemBlock const* _argv;
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std::vector<Variable const*> const* _vars;
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std::vector<RegisterId> const* _regs;
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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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