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Example code of dromru/iterable-dbal

Informations about the package iterable-dbal

iterable-dbal

Latest Stable Version Tests Coverage Status Minimum PHP Version

Проблема

Зачастую код получения данных пачками из БД перемешивается с логикой обработки этих данных. Такой код часто дублируется и усложняет поддержку.

Решение

iterable-dbal - пакет, который предоставляет набор классов для разбиения пакетных sql-запросов на раздельные. Приспособлен для использования в связке с doctrine/dbal.

P.S. Реализован с использованием генераторов.

Примеры использования

Допустим необходимо итерировать по существующим записям в БД с идентификаторами в промежутке от 1 до 1 000 000 000. Когда весь 1 000 000 000 из БД в память не влезает (жирный запрос), можно использовать \Drom\IterableUtils\Dbal\BatchedMinMaxQueryIterator для того чтобы выполнить N облегчённых запросов - эта логика скрыта внутри итератора.

Если требуется итерировать по существующей коллекции идентификаторов, но необходимо получать набор связанных данных, то можно использовать \Drom\IterableUtils\Dbal\BatchedIdsQueryIterator для того чтобы выполнить N облегчённых запросов.

All versions of iterable-dbal with dependencies

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Requires php Version >=7.4
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