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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.
*/
#include "mongo/db/query/ce/array_histogram.h"
namespace mongo::ce {
using namespace sbe;
ArrayHistogram::ArrayHistogram() : ArrayHistogram(ScalarHistogram(), {}) {}
ArrayHistogram::ArrayHistogram(ScalarHistogram scalar,
std::map<value::TypeTags, size_t> typeCounts,
ScalarHistogram arrayUnique,
ScalarHistogram arrayMin,
ScalarHistogram arrayMax,
std::map<value::TypeTags, size_t> arrayTypeCounts)
: _scalar(std::move(scalar)),
_typeCounts(std::move(typeCounts)),
_arrayUnique(std::move(arrayUnique)),
_arrayMin(std::move(arrayMin)),
_arrayMax(std::move(arrayMax)),
_arrayTypeCounts(std::move(arrayTypeCounts)) {
invariant(isArray());
}
ArrayHistogram::ArrayHistogram(ScalarHistogram scalar, std::map<value::TypeTags, size_t> typeCounts)
: _scalar(std::move(scalar)),
_typeCounts(std::move(typeCounts)),
_arrayUnique(boost::none),
_arrayMin(boost::none),
_arrayMax(boost::none),
_arrayTypeCounts(boost::none) {
invariant(!isArray());
}
bool ArrayHistogram::isArray() const {
return _arrayUnique && _arrayMin && _arrayMax && _arrayTypeCounts;
}
std::string typeCountsToString(const std::map<value::TypeTags, size_t>& typeCounts) {
std::ostringstream os;
os << "{";
bool first = true;
for (auto [tag, count] : typeCounts) {
if (!first)
os << ", ";
os << tag << ": " << count;
first = false;
}
os << "}";
return os.str();
}
std::string ArrayHistogram::toString() const {
std::ostringstream os;
os << "{\n";
os << " scalar: " << _scalar.toString();
os << ",\n typeCounts: " << typeCountsToString(_typeCounts);
if (isArray()) {
os << ",\n arrayUnique: " << _arrayUnique->toString();
os << ",\n arrayMin: " << _arrayMin->toString();
os << ",\n arrayMax: " << _arrayMax->toString();
os << ",\n arrayTypeCounts: " << typeCountsToString(*_arrayTypeCounts);
}
os << "\n}\n";
return os.str();
}
const ScalarHistogram& ArrayHistogram::getScalar() const {
return _scalar;
}
const ScalarHistogram& ArrayHistogram::getArrayUnique() const {
invariant(isArray());
return *_arrayUnique;
}
const ScalarHistogram& ArrayHistogram::getArrayMin() const {
invariant(isArray());
return *_arrayMin;
}
const ScalarHistogram& ArrayHistogram::getArrayMax() const {
invariant(isArray());
return *_arrayMax;
}
const std::map<value::TypeTags, size_t>& ArrayHistogram::getTypeCounts() const {
return _typeCounts;
}
const std::map<value::TypeTags, size_t>& ArrayHistogram::getArrayTypeCounts() const {
invariant(isArray());
return *_arrayTypeCounts;
}
} // namespace mongo::ce
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