mirror of https://gitee.com/bigwinds/arangodb
62 lines
1.8 KiB
C++
62 lines
1.8 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
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef ARANGOD_GRAPH_EDGECURSOR_H
|
|
#define ARANGOD_GRAPH_EDGECURSOR_H 1
|
|
|
|
#include "Basics/Common.h"
|
|
|
|
namespace arangodb {
|
|
|
|
namespace velocypack {
|
|
class Slice;
|
|
}
|
|
|
|
namespace graph {
|
|
|
|
struct EdgeDocumentToken;
|
|
|
|
/// @brief Abstract class used in the traversals
|
|
/// to abstract away access to indexes / DBServers.
|
|
/// Returns edges as VelocyPack.
|
|
|
|
class EdgeCursor {
|
|
public:
|
|
EdgeCursor() {}
|
|
virtual ~EdgeCursor() {}
|
|
|
|
using Callback =
|
|
std::function<void(EdgeDocumentToken&&, arangodb::velocypack::Slice, size_t)>;
|
|
|
|
virtual bool next(std::function<void(EdgeDocumentToken&&, arangodb::velocypack::Slice, size_t)> const& callback) = 0;
|
|
|
|
virtual void readAll(std::function<void(EdgeDocumentToken&&, arangodb::velocypack::Slice, size_t)> const& callback) = 0;
|
|
|
|
virtual size_t httpRequests() const = 0;
|
|
};
|
|
|
|
} // namespace graph
|
|
} // namespace arangodb
|
|
|
|
#endif
|