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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Db\Query; |
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use Closure; |
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use Throwable; |
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use Yiisoft\Db\Exception\Exception; |
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use Yiisoft\Db\Exception\InvalidConfigException; |
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use Yiisoft\Db\Query\Data\DataReaderInterface; |
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use function current; |
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use function key; |
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use function next; |
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use function reset; |
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/** |
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* Represents the result of a batch query execution. |
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* |
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* A batch query is a group of many SQL statements that are executed together as a single unit. |
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*/ |
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class BatchQueryResult implements BatchQueryResultInterface |
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{ |
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protected int $batchSize = 100; |
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private int|string|null $key = null; |
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/** |
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* @var DataReaderInterface|null The data reader associated with this batch query. |
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*/ |
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protected DataReaderInterface|null $dataReader = null; |
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/** |
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* @var array|null The data retrieved in the current batch. |
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*/ |
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private array|null $batch = null; |
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private Closure|null $populateMethod = null; |
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/** |
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* @var mixed The value for the current iteration. |
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*/ |
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private mixed $value; |
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public function __construct(private QueryInterface $query, private bool $each = false) |
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{ |
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} |
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public function __destruct() |
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{ |
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$this->reset(); |
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} |
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public function reset(): void |
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{ |
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$this->dataReader = null; |
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$this->batch = null; |
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$this->value = null; |
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$this->key = null; |
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} |
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public function rewind(): void |
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{ |
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$this->reset(); |
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$this->next(); |
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} |
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public function next(): void |
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{ |
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if ($this->batch === null || !$this->each || (next($this->batch) === false)) { |
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$this->batch = $this->fetchData(); |
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reset($this->batch); |
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} |
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if ($this->each) { |
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$this->value = current($this->batch); |
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if ($this->query->getIndexBy() !== null) { |
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$this->key = key($this->batch); |
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} elseif (key($this->batch) !== null) { |
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$this->key = $this->key === null ? 0 : (int) $this->key + 1; |
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} else { |
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$this->key = null; |
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} |
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} else { |
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$this->value = $this->batch; |
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$this->key = $this->key === null ? 0 : (int) $this->key + 1; |
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} |
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} |
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/** |
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* Fetches the next batch of data. |
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* |
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* @throws Exception |
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* @throws InvalidConfigException |
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* @throws Throwable |
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* |
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* @return array The data fetched. |
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*/ |
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protected function fetchData(): array |
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{ |
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if ($this->dataReader === null) { |
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$this->dataReader = $this->query->createCommand()->query(); |
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} |
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$rows = $this->getRows(); |
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if ($this->populateMethod !== null) { |
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return (array) ($this->populateMethod)($rows, $this->query->getIndexBy()); |
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} |
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return $rows; |
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} |
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/** |
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* Reads and collects rows for batch. |
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*/ |
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protected function getRows(): array |
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{ |
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$rows = []; |
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$count = 0; |
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do { |
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$this->dataReader?->next(); |
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/** @psalm-var array|bool $row */ |
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$row = $this->dataReader?->current(); |
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} while ($row && ($rows[] = $row) && ++$count < $this->batchSize); |
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return $rows; |
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} |
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public function key(): int|string|null |
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{ |
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return $this->key; |
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} |
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public function current(): mixed |
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{ |
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return $this->value; |
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} |
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public function valid(): bool |
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{ |
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return !empty($this->batch); |
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} |
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public function getQuery(): QueryInterface|null |
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{ |
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return $this->query; |
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} |
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public function getBatchSize(): int |
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{ |
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return $this->batchSize; |
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} |
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public function batchSize(int $value): self |
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{ |
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$this->batchSize = $value; |
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return $this; |
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} |
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public function setPopulatedMethod(Closure|null $populateMethod = null): static |
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{ |
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$this->populateMethod = $populateMethod; |
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return $this; |
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} |
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} |
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yiisoft /
db
