mirror of https://gitee.com/bigwinds/arangodb
74 lines
2.8 KiB
C++
74 lines
2.8 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2016 ArangoDB 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 ARANGODB_REST_SERVER_VIEW_TYPES_FEATURE_H
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#define ARANGODB_REST_SERVER_VIEW_TYPES_FEATURE_H 1
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#include "ApplicationFeatures/ApplicationFeature.h"
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#include "VocBase/LogicalView.h"
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namespace arangodb {
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class ViewTypesFeature final: public application_features::ApplicationFeature {
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public:
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//////////////////////////////////////////////////////////////////////////////
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/// @brief typedef for a LogicalView factory function
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/// This typedef is used when registering the factory function for any view
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/// type. the creator function is called when a view is first created or
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/// re-opened after a server restart. the VelocyPack Slice will contain all
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/// information about the view's general and implementation-specific properties.
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/// @param preCommit called before completing view creation (IFF returns true)
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/// e.g. before persisting definition to filesystem
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/// IFF preCommit == false then skip invocation
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//////////////////////////////////////////////////////////////////////////////
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typedef std::function<std::shared_ptr<LogicalView>(
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TRI_vocbase_t& vocbase, // database
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velocypack::Slice const& definition, // view definition
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uint64_t planVersion, // cluster plan version ('0' by default for non-cluster)
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LogicalView::PreCommitCallback const& preCommit
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)> ViewFactory;
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explicit ViewTypesFeature(application_features::ApplicationServer* server);
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/// @return 'factory' for 'type' was added successfully
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arangodb::Result emplace(
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LogicalDataSource::Type const& type,
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ViewFactory const& factory
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);
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/// @return factory for the specified type or false if no such type
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ViewFactory const& factory(
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LogicalDataSource::Type const& type
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) const noexcept;
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static std::string const& name();
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void prepare() override final;
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void unprepare() override final;
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private:
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std::unordered_map<LogicalDataSource::Type const*, ViewFactory> _factories;
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};
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} // arangodb
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#endif |