mirror of https://gitee.com/bigwinds/arangodb
69 lines
2.3 KiB
C++
69 lines
2.3 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 Christoph Uhde
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////////////////////////////////////////////////////////////////////////////////
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#include "ExecutorExpressionContext.h"
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#include "Aql/AqlItemBlock.h"
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#include "Aql/AqlValue.h"
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#include "Aql/InputAqlItemRow.h"
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#include "Aql/Variable.h"
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#include "Basics/Exceptions.h"
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using namespace arangodb::aql;
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size_t ExecutorExpressionContext::numRegisters() const {
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return _inputRow.getNrRegisters();
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}
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AqlValue const& ExecutorExpressionContext::getRegisterValue(size_t i) const {
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return _inputRow.getValue(static_cast<arangodb::aql::RegisterId>(i));
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}
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Variable const* ExecutorExpressionContext::getVariable(size_t i) const {
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return (_vars)[i];
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}
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AqlValue ExecutorExpressionContext::getVariableValue(Variable const* variable, bool doCopy,
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bool& mustDestroy) const {
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mustDestroy = false;
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auto const searchId = variable->id;
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size_t i = -1; // size_t is guaranteed to be unsigned so the overflow is ok
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for (auto const* var : _vars) {
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TRI_ASSERT(var != nullptr);
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++i;
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if (var->id == searchId) {
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TRI_ASSERT(i < _regs.size());
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if (doCopy) {
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mustDestroy = true; // as we are copying
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return _inputRow.getValue((_regs)[i]).clone();
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}
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return _inputRow.getValue((_regs)[i]);
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}
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}
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std::string msg("variable not found '");
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msg.append(variable->name);
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msg.append("' in executeSimpleExpression()");
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THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INTERNAL, msg.c_str());
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}
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