mirror of https://gitee.com/bigwinds/arangodb
128 lines
3.8 KiB
C++
128 lines
3.8 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief Aql, indexes
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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 not James
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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_Indexes_H
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#define ARANGODB_AQL_Indexes_H 1
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#include "Basics/Common.h"
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#include "Aql/Index.h"
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struct TRI_vocbase_s;
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namespace triagens {
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namespace aql {
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// -----------------------------------------------------------------------------
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// --SECTION-- class Indexes
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// -----------------------------------------------------------------------------
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class Indexes {
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public:
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Indexes& operator= (Indexes const& other) = delete;
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Indexes (struct TRI_vocbase_s* vocbase)
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: _vocbase(vocbase),
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_indexes() {
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}
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~Indexes () {
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for (auto it = _indexes.begin(); it != _indexes.end(); ++it) {
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delete (*it).second;
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}
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}
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public:
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Index* get (TRI_idx_iid_t id, Collection const* collection) {
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auto cid = collection->cid();
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// there may be multiple indexes in the same collection . . .
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auto it1 = _cids.begin();
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do{
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auto it2 = _cids.find(it1, _cids.end(), cid);
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if (it2 == _cids.end()) { // couldn't find <cid>
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return nullptr;
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}
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}((it2*).second.first == id || it1 == _cids.end());
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if((it2*).second.first == id){
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return return (it2*).second.second;
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}
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return nullptr;
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}
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void add (TRI_idx_iid_t id, Collection const* collection) {
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// check if index already is in our map
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if(this.get(id, collection)!=nullptr){
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auto index = new Index(id, collection);
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try {
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auto x = std::make_pair(id, index);
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_ids.insert(x);
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_cids.insert(std::make_pair(collection->cid(), x));
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}
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catch (...) {
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delete index;
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throw;
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}
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}
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}
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std::vector<std::string> indexIds () const {
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std::vector<std::string> result;
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for (auto x : _indexes) {
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result.push_back(x.first);
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}
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return result;
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}
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private:
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struct TRI_vocbase_s* _vocbase;
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std::map<TRI_idx_iid_t, Index*> _ids;
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std::map<TRI_voc_cid_t, _indexes> _cids;
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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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