mirror of https://gitee.com/bigwinds/arangodb
120 lines
3.6 KiB
C++
120 lines
3.6 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief Aql, collections
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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_COLLECTIONS_H
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#define ARANGODB_AQL_COLLECTIONS_H 1
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#include "Basics/Common.h"
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#include "Aql/Collection.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 Collections
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// -----------------------------------------------------------------------------
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class Collections {
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public:
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Collections& operator= (Collections const& other) = delete;
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Collections (struct TRI_vocbase_s* vocbase)
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: _vocbase(vocbase),
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_collections() {
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}
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~Collections () {
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for (auto it = _collections.begin(); it != _collections.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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void add (std::string const& name,
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TRI_transaction_type_e accessType) {
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// check if collection already is in our map
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auto it = _collections.find(name);
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if (it == _collections.end()) {
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auto collection = new Collection(name, _vocbase, accessType);
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try {
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_collections.insert(std::make_pair(name, collection));
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}
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catch (...) {
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delete collection;
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throw;
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}
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}
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else {
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// change access type from read to write
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if (accessType == TRI_TRANSACTION_WRITE &&
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(*it).second->accessType == TRI_TRANSACTION_READ) {
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(*it).second->accessType = TRI_TRANSACTION_WRITE;
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}
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}
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}
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std::vector<std::string> collectionNames () const {
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std::vector<std::string> result;
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for (auto it = _collections.begin(); it != _collections.end(); ++it) {
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result.push_back((*it).first);
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}
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return result;
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}
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std::map<std::string, Collection*>* collections () {
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return &_collections;
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}
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private:
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struct TRI_vocbase_s* _vocbase;
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std::map<std::string, Collection*> _collections;
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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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