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