mirror of https://gitee.com/bigwinds/arangodb
80 lines
2.2 KiB
C++
80 lines
2.2 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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#ifndef ARANGOD_ROCKSDB_ROCKSDB_EXPORT_CURSOR_H
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#define ARANGOD_ROCKSDB_ROCKSDB_EXPORT_CURSOR_H 1
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#include "Basics/Common.h"
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#include "Utils/CollectionExport.h"
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#include "Utils/CollectionGuard.h"
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#include "Utils/CollectionNameResolver.h"
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#include "Utils/Cursor.h"
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#include "Utils/DatabaseGuard.h"
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#include "VocBase/voc-types.h"
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namespace arangodb {
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class IndexIterator;
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class SingleCollectionTransaction;
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class RocksDBExportCursor final : public Cursor {
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public:
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RocksDBExportCursor(
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TRI_vocbase_t& vocbase,
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std::string const& name,
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CollectionExport::Restrictions const& restrictions,
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CursorId id,
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size_t limit,
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size_t batchSize,
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double ttl,
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bool hasCount
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);
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~RocksDBExportCursor();
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CursorType type() const override final { return CURSOR_EXPORT; }
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bool hasNext();
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arangodb::velocypack::Slice next();
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size_t count() const override final;
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Result dump(velocypack::Builder&) override final;
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std::shared_ptr<transaction::Context> context() const override final;
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private:
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DatabaseGuard _guard;
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arangodb::CollectionNameResolver _resolver;
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CollectionExport::Restrictions _restrictions;
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std::string const _name;
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std::unique_ptr<SingleCollectionTransaction> _trx;
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std::unique_ptr<IndexIterator> _iter;
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size_t _position;
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size_t _size;
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};
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}
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#endif |