mirror of https://gitee.com/bigwinds/arangodb
76 lines
2.6 KiB
C++
76 lines
2.6 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 Michael Hackstein
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////////////////////////////////////////////////////////////////////////////////
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#include "Graphs.h"
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#include "Aql/Graphs.h"
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#include "Cluster/ClusterMethods.h"
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#include "Utils/SingleCollectionTransaction.h"
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#include "Utils/StandaloneTransactionContext.h"
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#include "VocBase/Graphs.h"
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using namespace arangodb;
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std::string const GRAPHS = "_graphs";
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Load a graph from the _graphs collection; local and coordinator way
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////////////////////////////////////////////////////////////////////////////////
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arangodb::aql::Graph* arangodb::lookupGraphByName(TRI_vocbase_t* vocbase,
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std::string const& name) {
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SingleCollectionTransaction trx(StandaloneTransactionContext::Create(vocbase),
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GRAPHS, TRI_TRANSACTION_READ);
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int res = trx.begin();
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if (res != TRI_ERROR_NO_ERROR) {
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THROW_ARANGO_EXCEPTION_FORMAT(res, "while looking up graph '%s'",
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name.c_str());
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}
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VPackBuilder b;
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{
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VPackObjectBuilder guard(&b);
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b.add(StaticStrings::KeyString, VPackValue(name));
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}
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// Default options are enough here
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OperationOptions options;
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OperationResult result = trx.document(GRAPHS, b.slice(), options);
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// Commit or abort.
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res = trx.finish(result.code);
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if (!result.successful()) {
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THROW_ARANGO_EXCEPTION_FORMAT(result.code, "while looking up graph '%s'",
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name.c_str());
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}
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if (res != TRI_ERROR_NO_ERROR) {
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THROW_ARANGO_EXCEPTION_FORMAT(res, "while looking up graph '%s'",
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name.c_str());
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}
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return new arangodb::aql::Graph(result.slice());
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}
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