mirror of https://gitee.com/bigwinds/arangodb
138 lines
4.4 KiB
C++
138 lines
4.4 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief Infrastructure for ExecutionPlans
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///
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/// @file arangod/Aql/ExecutionPlan.h
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///
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/// DISCLAIMER
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///
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/// Copyright 2010-2014 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 triAGENS GmbH, Cologne, Germany
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///
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/// @author Max Neunhoeffer
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/// @author Copyright 2014, triagens GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include "Aql/ExecutionPlan.h"
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#include <Basics/JsonHelper.h>
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using namespace triagens::aql;
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// -----------------------------------------------------------------------------
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// --SECTION-- methods of ExecutionPlan
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief toJson, export an ExecutionPlan to JSON
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////////////////////////////////////////////////////////////////////////////////
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TRI_json_t* ExecutionPlan::toJson (TRI_memory_zone_t* zone) {
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TRI_json_t* json = TRI_CreateArray2Json(zone, 2);
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if (nullptr == json) {
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return nullptr;
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}
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std::string type = getTypeString();
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TRI_json_t* sub = TRI_CreateString2CopyJson(zone, type.c_str(), type.size());
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if (nullptr == sub) {
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TRI_FreeJson(zone, json);
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return nullptr;
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}
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TRI_Insert3ArrayJson(zone, json, "type", sub);
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if (_dependencies.size() != 0) {
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sub = TRI_CreateList2Json(zone, _dependencies.size());
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if (nullptr == sub) {
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TRI_FreeJson(zone, json);
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return nullptr;
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}
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for (size_t i = 0; i < _dependencies.size(); i++) {
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TRI_json_t* subsub = _dependencies[i]->toJson(zone);
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if (subsub == nullptr) {
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TRI_FreeJson(zone, json);
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return nullptr;
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}
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TRI_PushBack3ListJson(zone, sub, subsub);
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}
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TRI_Insert3ArrayJson(zone, json, "dependencies", sub);
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}
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return json;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief convert to a string, basically for debugging purposes
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////////////////////////////////////////////////////////////////////////////////
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static void someSpaces (std::string& st, int nr) {
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for (int i = 0; i < nr; i++) {
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st.push_back(' ');
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}
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}
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void ExecutionPlan::appendAsString (std::string& st, int indent) {
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someSpaces(st, indent);
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st.push_back('<');
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st.append(getTypeString());
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if (_dependencies.size() != 0) {
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st.push_back('\n');
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for (size_t i = 0; i < _dependencies.size(); i++) {
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_dependencies[i]->appendAsString(st, indent+2);
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if (i != _dependencies.size()-1) {
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st.push_back(',');
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}
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else {
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st.push_back(' ');
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}
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}
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}
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st.push_back('>');
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief test function
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////////////////////////////////////////////////////////////////////////////////
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void testExecutionPlans () {
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ExecutionPlan* e = new ExecutionPlan();
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ExecutionPlan* f = new ExecutionPlan(e);
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std::string st;
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e->appendAsString(st, 0);
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std::cout << "e as string:\n" << st << std::endl;
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st.clear();
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f->appendAsString(st, 0);
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std::cout << "f as string:\n" << st << std::endl;
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TRI_json_t* json = e->toJson(TRI_UNKNOWN_MEM_ZONE);
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if (json != nullptr) {
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std::cout << "e as JSON:\n" <<
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triagens::basics::JsonHelper::toString(json) << std::endl;
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}
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, json);
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json = f->toJson(TRI_UNKNOWN_MEM_ZONE);
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if (json != nullptr) {
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std::cout << "f as JSON:\n" <<
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triagens::basics::JsonHelper::toString(json) << std::endl;
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}
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, json);
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delete f; // should not leave a leak
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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}\\|/// @addtogroup\\|// --SECTION--\\|/// @\\}\\)"
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// End:
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