mirror of https://gitee.com/bigwinds/arangodb
69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2017 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_COLLECTION_EXPORT_H
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#define ARANGOD_COLLECTION_EXPORT_H 1
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#include <unordered_set>
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#include "Basics/Common.h"
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namespace arangodb {
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struct CollectionExport {
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public:
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struct Restrictions {
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enum Type { RESTRICTION_NONE, RESTRICTION_INCLUDE, RESTRICTION_EXCLUDE };
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Restrictions() : fields(), type(RESTRICTION_NONE) {}
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std::unordered_set<std::string> fields;
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Type type;
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};
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static bool IncludeAttribute(CollectionExport::Restrictions::Type const restrictionType,
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std::unordered_set<std::string> const& fields,
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std::string const& key) {
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if (restrictionType == CollectionExport::Restrictions::RESTRICTION_INCLUDE ||
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restrictionType == CollectionExport::Restrictions::RESTRICTION_EXCLUDE) {
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bool const keyContainedInRestrictions = (fields.find(key) != fields.end());
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if ((restrictionType == CollectionExport::Restrictions::RESTRICTION_INCLUDE &&
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!keyContainedInRestrictions) ||
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(restrictionType == CollectionExport::Restrictions::RESTRICTION_EXCLUDE &&
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keyContainedInRestrictions)) {
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// exclude the field
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return false;
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}
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// include the field
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return true;
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} else {
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// no restrictions
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TRI_ASSERT(restrictionType == CollectionExport::Restrictions::RESTRICTION_NONE);
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return true;
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}
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return true;
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}
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};
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} // namespace arangodb
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#endif
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