mirror of https://gitee.com/bigwinds/arangodb
99 lines
2.9 KiB
C++
99 lines
2.9 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 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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////////////////////////////////////////////////////////////////////////////////
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#include "Collections.h"
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#include "Aql/Collection.h"
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#include "Basics/Exceptions.h"
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using namespace arangodb;
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using namespace arangodb::aql;
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Collections::Collections(TRI_vocbase_t* vocbase)
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: _vocbase(vocbase), _collections() {}
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Collections::~Collections() {
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for (auto& it : _collections) {
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delete it.second;
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}
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}
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Collection* Collections::get(std::string const& name) const {
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auto it = _collections.find(name);
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if (it != _collections.end()) {
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return (*it).second;
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}
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return nullptr;
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}
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Collection* Collections::add(std::string const& name, AccessMode::Type accessType) {
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// check if collection already is in our map
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TRI_ASSERT(!name.empty());
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auto it = _collections.find(name);
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if (it == _collections.end()) {
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if (_collections.size() >= MaxCollections) {
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THROW_ARANGO_EXCEPTION(TRI_ERROR_QUERY_TOO_MANY_COLLECTIONS);
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}
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auto collection = std::make_unique<Collection>(name, _vocbase, accessType);
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_collections.emplace(name, collection.get());
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return collection.release();
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}
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// note that the collection is used in both read & write ops
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if (AccessMode::isReadWriteChange(accessType, (*it).second->accessType())) {
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(*it).second->isReadWrite(true);
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}
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// change access type from read to write
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if (AccessMode::isWriteOrExclusive(accessType) &&
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(*it).second->accessType() == AccessMode::Type::READ) {
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(*it).second->accessType(accessType);
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} else if (AccessMode::isExclusive(accessType)) {
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// exclusive flag always wins
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(*it).second->accessType(accessType);
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}
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return (*it).second;
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}
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std::vector<std::string> Collections::collectionNames() const {
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std::vector<std::string> result;
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result.reserve(_collections.size());
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for (auto const& it : _collections) {
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result.emplace_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::collections() {
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return &_collections;
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}
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std::map<std::string, Collection*> const* Collections::collections() const {
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return &_collections;
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}
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