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<?php namespace Give\Framework\Migrations\Contracts; /** * Extend this class when you need database migration to run in batches. * * @since 4.0.0 / abstract class BatchMigration extends BaseMigration { /* * Get the number of items per batch * * @since 4.0.0 / abstract public function getBatchSize(): int; /* * * Get the total items count * * @since 4.0.0 / abstract public function getItemsCount(): int; /* * * Get the first and the last item ID for a batch * * @since 4.0.0 * * @return array{0: int, 1: int} the first value is the first id and the second value is the last id of a batch / abstract public function getBatchItemsAfter($lastId): ?array; /* * Run batch * * @param $firstId - first item ID in batch * @param $lastId - last item ID in batch * * @since 4.0.0 / abstract public function runBatch($firstId, $lastId); /* * Last step of the migration process * * The purpose of this method is to check if we have new items that came during the migration. * * @since 4.0.0 * * @param $lastProcessedId * * @return bool - true if there are new items, otherwise false */ abstract public function hasMoreItemsToBatch($lastProcessedId): ?bool; }