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/**
* Copyright (C) 2022-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 <string>
#include <vector>
#include "mongo/db/exec/sbe/abt/sbe_abt_test_util.h"
#include "mongo/db/exec/sbe/values/value.h"
#include "mongo/db/query/ce/histogram_estimation.h"
#include "mongo/db/query/ce/scalar_histogram.h"
#include "mongo/db/query/ce/value_utils.h"
namespace mongo::ce {
class ArrayHistogram;
/**
Given a list of SBE values and a query, create a collection containing the data,
and count the results from the supplied query.
*/
size_t getActualCard(OperationContext* opCtx,
const std::vector<SBEValue>& input,
const std::string& query);
/**
Given a value and a comparison operator, generate a match expression reflecting
x cmpOp val.
*/
std::string makeMatchExpr(const SBEValue& val, EstimationType cmpOp);
/**
Given a vector of values, create a histogram reflection the distribution of the vector
with the supplied number of buckets.
*/
ScalarHistogram makeHistogram(std::vector<SBEValue>& randData, size_t nBuckets);
/**
Serialize a vector of values.
*/
std::string printValueArray(const std::vector<SBEValue>& values);
/**
Plot a set of statistics as stored in ArrayHistogram.
*/
std::string plotArrayEstimator(const ArrayHistogram& estimator, const std::string& header);
} // namespace mongo::ce
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