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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 <vector>
#include "mongo/base/status_with.h"
#include "mongo/bson/bsonobj.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/pipeline/aggregation_request.h"
namespace mongo {
/**
* Represents a resolved definition, composed of a base collection namespace and a pipeline
* built from one or more views.
*/
class ResolvedView final : public ErrorExtraInfo {
public:
ResolvedView(const NamespaceString& collectionNs,
std::vector<BSONObj> pipeline,
BSONObj defaultCollation)
: _namespace(collectionNs),
_pipeline(std::move(pipeline)),
_defaultCollation(std::move(defaultCollation)) {}
static ResolvedView fromBSON(const BSONObj& commandResponseObj);
/**
* Convert an aggregation command on a view to the equivalent command against the view's
* underlying collection.
*/
AggregationRequest asExpandedViewAggregation(const AggregationRequest& aggRequest) const;
const NamespaceString& getNamespace() const {
return _namespace;
}
const std::vector<BSONObj>& getPipeline() const {
return _pipeline;
}
const BSONObj& getDefaultCollation() const {
return _defaultCollation;
}
// ErrorExtraInfo API
static constexpr auto code = ErrorCodes::CommandOnShardedViewNotSupportedOnMongod;
void serialize(BSONObjBuilder* bob) const final;
static std::shared_ptr<const ErrorExtraInfo> parse(const BSONObj&);
private:
NamespaceString _namespace;
std::vector<BSONObj> _pipeline;
// The default collation associated with this view. An empty object means that the default is
// the simple collation.
//
// Currently all operations which run over a view must use the default collation. This means
// that operations on the view which do not specify a collation inherit the default. Operations
// on the view which specify any other collation fail with a user error.
BSONObj _defaultCollation;
};
} // namespace mongo
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