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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <set>
#include <string>
#include "mongo/db/field_ref.h"
#include "mongo/stdx/unordered_set.h"
namespace mongo {
struct IndexBounds;
struct IndexKeyEntry;
struct Interval;
struct MultikeyMetadataAccessStats;
class OperationContext;
class WildcardAccessMethod;
/**
* Returns an exact set or super-set of the bounds required to fetch the multikey metadata keys
* relevant to 'field'.
*/
std::vector<Interval> getMultikeyPathIndexIntervalsForField(FieldRef field);
/**
* Returns the intersection of 'fields' and the set of multikey metadata paths stored in the
* wildcard index. Statistics reporting index seeks and keys examined are written to 'stats'.
*/
std::set<FieldRef> getWildcardMultikeyPathSet(const WildcardAccessMethod* wam,
OperationContext* opCtx,
const stdx::unordered_set<std::string>& fieldSet,
MultikeyMetadataAccessStats* stats);
/**
* Returns the set of all paths for which the wildcard index has multikey metadata keys.
* Statistics reporting index seeks and keys examined are written to 'stats'.
*/
std::set<FieldRef> getWildcardMultikeyPathSet(const WildcardAccessMethod* wam,
OperationContext* opCtx,
MultikeyMetadataAccessStats* stats);
} // namespace mongo
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