mirror of https://gitee.com/bigwinds/arangodb
76 lines
2.6 KiB
C++
76 lines
2.6 KiB
C++
////////////////////////////////////////////////////////////////////////////////
|
|
/// DISCLAIMER
|
|
///
|
|
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
|
|
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
|
|
///
|
|
/// Licensed under the Apache License, Version 2.0 (the "License");
|
|
/// you may not use this file except in compliance with the License.
|
|
/// You may obtain a copy of the License at
|
|
///
|
|
/// http://www.apache.org/licenses/LICENSE-2.0
|
|
///
|
|
/// Unless required by applicable law or agreed to in writing, software
|
|
/// distributed under the License is distributed on an "AS IS" BASIS,
|
|
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
/// See the License for the specific language governing permissions and
|
|
/// limitations under the License.
|
|
///
|
|
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
|
|
///
|
|
/// @author Michael Hackstein
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include "Basics/JsonHelper.h"
|
|
#include "Aql/Graphs.h"
|
|
#include "Cluster/ClusterMethods.h"
|
|
#include "Utils/SingleCollectionTransaction.h"
|
|
#include "Utils/StandaloneTransactionContext.h"
|
|
#include "VocBase/Graphs.h"
|
|
|
|
using namespace arangodb::basics;
|
|
|
|
std::string const GRAPHS = "_graphs";
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief Load a graph from the _graphs collection; local and coordinator way
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
arangodb::aql::Graph* arangodb::lookupGraphByName(TRI_vocbase_t* vocbase,
|
|
std::string const& name) {
|
|
|
|
SingleCollectionTransaction trx(StandaloneTransactionContext::Create(vocbase),
|
|
GRAPHS, TRI_TRANSACTION_READ);
|
|
|
|
int res = trx.begin();
|
|
|
|
if (res != TRI_ERROR_NO_ERROR) {
|
|
THROW_ARANGO_EXCEPTION_FORMAT(res, "while looking up graph '%s'",
|
|
name.c_str());
|
|
}
|
|
VPackBuilder b;
|
|
{
|
|
VPackObjectBuilder guard(&b);
|
|
b.add(TRI_VOC_ATTRIBUTE_KEY, VPackValue(name));
|
|
}
|
|
|
|
// Default options are enough here
|
|
OperationOptions options;
|
|
|
|
OperationResult result = trx.document(GRAPHS, b.slice(), options);
|
|
|
|
// Commit or abort.
|
|
res = trx.finish(result.code);
|
|
|
|
if (!result.successful()) {
|
|
THROW_ARANGO_EXCEPTION_FORMAT(result.code, "while looking up graph '%s'",
|
|
name.c_str());
|
|
}
|
|
if (res != TRI_ERROR_NO_ERROR) {
|
|
THROW_ARANGO_EXCEPTION_FORMAT(res, "while looking up graph '%s'",
|
|
name.c_str());
|
|
}
|
|
|
|
return new arangodb::aql::Graph(result.slice());
|
|
}
|