mirror of https://gitee.com/bigwinds/arangodb
108 lines
3.2 KiB
C++
108 lines
3.2 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 Andrey Abramov
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/// @author Vasiliy Nabatchikov
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////////////////////////////////////////////////////////////////////////////////
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#include "IResearchExpressionContext.h"
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#include "Aql/AqlItemBlock.h"
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#include "Aql/IResearchViewNode.h"
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#include "Basics/StaticStrings.h"
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namespace arangodb {
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namespace iresearch {
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using namespace arangodb::aql;
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// -----------------------------------------------------------------------------
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// --SECTION-- ViewExpressionContext implementation
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// -----------------------------------------------------------------------------
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size_t ViewExpressionContext::numRegisters() const {
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return _numRegs;
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}
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AqlValue ViewExpressionContext::getVariableValue(Variable const* var, bool doCopy,
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bool& mustDestroy) const {
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TRI_ASSERT(var);
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if (var == &outVariable()) {
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// self-reference
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if (_expr) {
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std::string expr;
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try {
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expr = _expr->toString();
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} catch (...) {
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}
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if (!expr.empty()) {
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THROW_ARANGO_EXCEPTION_FORMAT(
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TRI_ERROR_NOT_IMPLEMENTED,
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"Unable to evaluate loop variable '%s' as a part of ArangoSearch "
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"noncompliant expression '%s'",
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var->name.c_str(), expr.c_str());
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}
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}
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THROW_ARANGO_EXCEPTION_FORMAT(
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TRI_ERROR_NOT_IMPLEMENTED,
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"Unable to evaluate loop variable '%s' as a part of ArangoSearch "
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"noncompliant expression",
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var->name.c_str());
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}
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mustDestroy = false;
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auto const& vars = varInfoMap();
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auto const it = vars.find(var->id);
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if (vars.end() == it) {
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THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INTERNAL, "cannot find variable");
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}
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auto const& varInfo = it->second;
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if (varInfo.depth > decltype(varInfo.depth)(nodeDepth())) {
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THROW_ARANGO_EXCEPTION_FORMAT(TRI_ERROR_BAD_PARAMETER,
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"Variable '%s' is used before being assigned",
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var->name.c_str());
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}
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TRI_ASSERT(_inputRow.isInitialized());
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AqlValue const& value = _inputRow.getValue(varInfo.registerId);
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if (doCopy) {
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mustDestroy = true;
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return value.clone();
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}
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return value;
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}
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} // namespace iresearch
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} // namespace arangodb
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// -----------------------------------------------------------------------------
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// --SECTION-- END-OF-FILE
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// -----------------------------------------------------------------------------
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