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<?php
/**
* SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OC\Files\Search\QueryOptimizer;
use OC\Files\Search\SearchBinaryOperator;
use OC\Files\Search\SearchComparison;
use OCP\Files\Search\ISearchBinaryOperator;
use OCP\Files\Search\ISearchComparison;
use OCP\Files\Search\ISearchOperator;
/**
* transform IN (1000+ element) into (IN (1000 elements) OR IN(...))
*/
class SplitLargeIn extends ReplacingOptimizerStep {
public function processOperator(ISearchOperator &$operator): bool {
if (
$operator instanceof ISearchComparison &&
$operator->getType() === ISearchComparison::COMPARE_IN &&
count($operator->getValue()) > 1000
) {
$chunks = array_chunk($operator->getValue(), 1000);
$chunkComparisons = array_map(function (array $values) use ($operator) {
return new SearchComparison(ISearchComparison::COMPARE_IN, $operator->getField(), $values);
}, $chunks);
$operator = new SearchBinaryOperator(ISearchBinaryOperator::OPERATOR_OR, $chunkComparisons);
return true;
}
parent::processOperator($operator);
return false;
}
}
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