mirror of https://gitee.com/bigwinds/arangodb
99 lines
3.4 KiB
C++
99 lines
3.4 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 "SingleCollectionTransaction.h"
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#include "StorageEngine/TransactionCollection.h"
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#include "StorageEngine/TransactionState.h"
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#include "Utils/CollectionNameResolver.h"
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#include "Utils/OperationResult.h"
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#include "Transaction/Methods.h"
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#include "Transaction/Context.h"
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#include "VocBase/LogicalCollection.h"
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using namespace arangodb;
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/// @brief create the transaction, using a collection id
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SingleCollectionTransaction::SingleCollectionTransaction(
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std::shared_ptr<transaction::Context> const& transactionContext, TRI_voc_cid_t cid,
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AccessMode::Type accessType)
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: transaction::Methods(transactionContext),
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_cid(cid),
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_trxCollection(nullptr),
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_documentCollection(nullptr),
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_accessType(accessType) {
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// add the (sole) collection
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addCollection(cid, _accessType);
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addHint(transaction::Hints::Hint::NO_DLD);
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}
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/// @brief create the transaction, using a collection name
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SingleCollectionTransaction::SingleCollectionTransaction(
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std::shared_ptr<transaction::Context> const& transactionContext,
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std::string const& name, AccessMode::Type accessType)
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: transaction::Methods(transactionContext),
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_cid(0),
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_trxCollection(nullptr),
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_documentCollection(nullptr),
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_accessType(accessType) {
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// add the (sole) collection
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_cid = resolver()->getCollectionId(name);
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addCollection(_cid, name.c_str(), _accessType);
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addHint(transaction::Hints::Hint::NO_DLD);
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}
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/// @brief get the underlying transaction collection
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TransactionCollection* SingleCollectionTransaction::resolveTrxCollection() {
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TRI_ASSERT(_cid > 0);
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if (_trxCollection == nullptr) {
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_trxCollection = _state->collection(_cid, _accessType);
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if (_trxCollection != nullptr) {
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_documentCollection = _trxCollection->collection();
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}
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}
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TRI_ASSERT(_trxCollection != nullptr);
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return _trxCollection;
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}
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/// @brief get the underlying document collection
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/// note that we have two identical versions because this is called
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/// in two different situations
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LogicalCollection* SingleCollectionTransaction::documentCollection() {
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if (_documentCollection != nullptr) {
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return _documentCollection;
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}
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resolveTrxCollection();
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TRI_ASSERT(_documentCollection != nullptr);
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return _documentCollection;
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}
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/// @brief get the underlying collection's name
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std::string SingleCollectionTransaction::name() {
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// will ensure we have the _trxCollection object set
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return resolveTrxCollection()->collectionName();
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}
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