mirror of https://gitee.com/bigwinds/arangodb
62 lines
2.2 KiB
C++
62 lines
2.2 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 Jan Steemann
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include "CollectionScanner.h"
|
|
#include "Basics/VelocyPackHelper.h"
|
|
#include "Utils/OperationCursor.h"
|
|
#include "Utils/Transaction.h"
|
|
|
|
using namespace arangodb::aql;
|
|
|
|
CollectionScanner::CollectionScanner(arangodb::Transaction* trx,
|
|
arangodb::ManagedDocumentResult* mmdr,
|
|
std::string const& collection,
|
|
bool readRandom)
|
|
: _cursor(trx->indexScan(collection,
|
|
(readRandom ? arangodb::Transaction::CursorType::ANY
|
|
: arangodb::Transaction::CursorType::ALL),
|
|
Transaction::IndexHandle(), VPackSlice(), mmdr, 0,
|
|
UINT64_MAX, 1000, false)) {
|
|
TRI_ASSERT(_cursor->successful());
|
|
}
|
|
|
|
CollectionScanner::~CollectionScanner() {}
|
|
|
|
void CollectionScanner::scan(std::vector<arangodb::DocumentIdentifierToken>& result, size_t batchSize) {
|
|
result.clear();
|
|
|
|
if (!_cursor->hasMore()) {
|
|
return;
|
|
}
|
|
|
|
_cursor->getMoreMptr(result, batchSize);
|
|
}
|
|
|
|
int CollectionScanner::forward(size_t batchSize, uint64_t& skipped) {
|
|
return _cursor->skip(batchSize, skipped);
|
|
}
|
|
|
|
void CollectionScanner::reset() {
|
|
_cursor->reset();
|
|
}
|