mirror of https://gitee.com/bigwinds/arangodb
117 lines
3.8 KiB
C++
117 lines
3.8 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief Aql, V8 execution context
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2014 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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/// @author Copyright 2014, ArangoDB GmbH, Cologne, Germany
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/// @author Copyright 2012-2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGODB_AQL_V8_EXPRESSION_H
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#define ARANGODB_AQL_V8_EXPRESSION_H 1
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#include "Basics/Common.h"
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#include "Basics/JsonHelper.h"
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#include "BasicsC/json.h"
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#include "Aql/Types.h"
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#include "V8/v8-conv.h"
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#include <v8.h>
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namespace triagens {
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namespace aql {
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// -----------------------------------------------------------------------------
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// --SECTION-- struct V8Expression
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// -----------------------------------------------------------------------------
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struct V8Expression {
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////////////////////////////////////////////////////////////////////////////////
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/// @brief create the v8 expression
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////////////////////////////////////////////////////////////////////////////////
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V8Expression (v8::Isolate* isolate,
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v8::Persistent<v8::Function> func)
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: isolate(isolate),
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func(func) {
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroy the v8 expression
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////////////////////////////////////////////////////////////////////////////////
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~V8Expression () {
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func.Dispose(isolate);
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func.Clear();
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief execute the expression
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////////////////////////////////////////////////////////////////////////////////
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AqlValue* execute (AqlValue const** argv,
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std::vector<Variable*> vars,
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std::vector<RegisterId> regs) {
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// TODO: decide whether a separate handle scope is needed
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v8::Handle<v8::Object> values = v8::Object::New();
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for (size_t i = 0; i < vars.size(); ++i) {
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auto varname = vars[i]->name;
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auto reg = regs[i];
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values->Set(v8::String::New(varname.c_str(), (int) varname.size()), argv[reg]->toV8());
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}
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v8::Handle<v8::Value> args[] = { values };
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v8::Handle<v8::Value> result = func->Call(func, 1, args);
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TRI_json_t* json = TRI_ObjectToJson(result);
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if (json == nullptr) {
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THROW_ARANGO_EXCEPTION(TRI_ERROR_OUT_OF_MEMORY);
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}
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return new AqlValue(new triagens::basics::Json(TRI_UNKNOWN_MEM_ZONE, json));
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}
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v8::Isolate* isolate;
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v8::Persistent<v8::Function> func;
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};
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}
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}
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#endif
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// -----------------------------------------------------------------------------
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// --SECTION-- END-OF-FILE
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// -----------------------------------------------------------------------------
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @page\\|// --SECTION--\\|/// @\\}"
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// End:
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