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| 1 | +<?php |
| 2 | +/** |
| 3 | + * Copyright © Magento, Inc. All rights reserved. |
| 4 | + * See COPYING.txt for license details. |
| 5 | + */ |
| 6 | + |
| 7 | +namespace Magento\Eav\Model\Mview; |
| 8 | + |
| 9 | +use Magento\Framework\App\ResourceConnection; |
| 10 | +use Magento\Framework\DB\Sql\Expression; |
| 11 | +use Magento\Framework\Mview\View\ChangeLogBatchWalkerInterface; |
| 12 | +use Magento\Framework\Mview\View\ChangelogInterface; |
| 13 | + |
| 14 | +/** |
| 15 | + * Class BatchIterator |
| 16 | + */ |
| 17 | +class ChangeLogBatchWalker implements ChangeLogBatchWalkerInterface |
| 18 | +{ |
| 19 | + private const GROUP_CONCAT_MAX_VARIABLE = 'group_concat_max_len'; |
| 20 | + /** ID is defined as small int. Default size of it is 5 */ |
| 21 | + private const DEFAULT_ID_SIZE = 5; |
| 22 | + |
| 23 | + /** |
| 24 | + * @var ResourceConnection |
| 25 | + */ |
| 26 | + private $resourceConnection; |
| 27 | + |
| 28 | + /** |
| 29 | + * @var array |
| 30 | + */ |
| 31 | + private $entityTypeCodes; |
| 32 | + |
| 33 | + /** |
| 34 | + * @param ResourceConnection $resourceConnection |
| 35 | + * @param array $entityTypeCodes |
| 36 | + */ |
| 37 | + public function __construct( |
| 38 | + ResourceConnection $resourceConnection, |
| 39 | + array $entityTypeCodes = [] |
| 40 | + ) { |
| 41 | + $this->resourceConnection = $resourceConnection; |
| 42 | + $this->entityTypeCodes = $entityTypeCodes; |
| 43 | + } |
| 44 | + |
| 45 | + /** |
| 46 | + * Calculate EAV attributes size |
| 47 | + * |
| 48 | + * @param ChangelogInterface $changelog |
| 49 | + * @return int |
| 50 | + * @throws \Exception |
| 51 | + */ |
| 52 | + private function calculateEavAttributeSize(ChangelogInterface $changelog): int |
| 53 | + { |
| 54 | + $connection = $this->resourceConnection->getConnection(); |
| 55 | + |
| 56 | + if (!isset($this->entityTypeCodes[$changelog->getViewId()])) { |
| 57 | + throw new \Exception('Entity type for view was not defined'); |
| 58 | + } |
| 59 | + |
| 60 | + $select = $connection->select(); |
| 61 | + $select->from( |
| 62 | + $this->resourceConnection->getTableName('eav_attribute'), |
| 63 | + new Expression('COUNT(*)') |
| 64 | + ) |
| 65 | + ->joinInner( |
| 66 | + ['type' => $connection->getTableName('eav_entity_type')], |
| 67 | + 'type.entity_type_id=eav_attribute.entity_type_id' |
| 68 | + ) |
| 69 | + ->where('type.entity_type_code = ?', $this->entityTypeCodes[$changelog->getViewId()]); |
| 70 | + |
| 71 | + return (int) $connection->fetchOne($select); |
| 72 | + } |
| 73 | + |
| 74 | + /** |
| 75 | + * Prepare group max concat |
| 76 | + * |
| 77 | + * @param int $numberOfAttributes |
| 78 | + * @return void |
| 79 | + * @throws \Exception |
| 80 | + */ |
| 81 | + private function setGroupConcatMax(int $numberOfAttributes): void |
| 82 | + { |
| 83 | + $connection = $this->resourceConnection->getConnection(); |
| 84 | + $connection->query(sprintf( |
| 85 | + 'SET SESSION %s=%s', |
| 86 | + self::GROUP_CONCAT_MAX_VARIABLE, |
| 87 | + $numberOfAttributes * (self::DEFAULT_ID_SIZE + 1) |
| 88 | + )); |
| 89 | + } |
| 90 | + |
| 91 | + /** |
| 92 | + * @inheritdoc |
| 93 | + * @throws \Exception |
| 94 | + */ |
| 95 | + public function walk(ChangelogInterface $changelog, int $fromVersionId, int $toVersion, int $batchSize) |
| 96 | + { |
| 97 | + $connection = $this->resourceConnection->getConnection(); |
| 98 | + $numberOfAttributes = $this->calculateEavAttributeSize($changelog); |
| 99 | + $this->setGroupConcatMax($numberOfAttributes); |
| 100 | + $select = $connection->select()->distinct(true) |
| 101 | + ->where( |
| 102 | + 'version_id > ?', |
| 103 | + (int) $fromVersionId |
| 104 | + ) |
| 105 | + ->where( |
| 106 | + 'version_id <= ?', |
| 107 | + $toVersion |
| 108 | + ) |
| 109 | + ->group([$changelog->getColumnName(), 'store_id']) |
| 110 | + ->limit($batchSize); |
| 111 | + |
| 112 | + $columns = [ |
| 113 | + $changelog->getColumnName(), |
| 114 | + 'attribute_ids' => new Expression('GROUP_CONCAT(attribute_id)'), |
| 115 | + 'store_id' |
| 116 | + ]; |
| 117 | + $select->from($changelog->getName(), $columns); |
| 118 | + return $connection->fetchAll($select); |
| 119 | + } |
| 120 | +} |
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