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<?php |
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declare(strict_types=1); |
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namespace loophp\collection\Operation; |
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use Closure; |
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use Doctrine\Common\Collections\Criteria; |
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use Doctrine\Common\Collections\Expr\ClosureExpressionVisitor; |
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use Doctrine\Common\Collections\Order; |
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use Generator; |
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use loophp\collection\Contract\Operation\Sortable; |
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/** |
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* @immutable |
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* |
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* @template TKey |
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* @template T |
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*/ |
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final class Matching extends AbstractOperation |
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{ |
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/** |
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* @return Closure(Criteria): Closure(iterable<TKey, T>): Generator<TKey, T> |
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*/ |
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public function __invoke(): Closure |
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{ |
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return |
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/** |
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* @return Closure(iterable<TKey, T>): Generator<TKey, T> |
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*/ |
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static function (Criteria $criteria): Closure { |
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$expr = $criteria->getWhereExpression(); |
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$pipes = []; |
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if (null !== $expr) { |
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/** @var Closure(T): bool $filterCallback */ |
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$filterCallback = (new ClosureExpressionVisitor())->dispatch($expr); |
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$pipes[] = (new Filter())()($filterCallback); |
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} |
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$orderings = $criteria->orderings(); |
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if ([] !== $orderings) { |
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$next = null; |
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foreach (array_reverse($orderings) as $field => $ordering) { |
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$next = ClosureExpressionVisitor::sortByField($field, Order::Descending === $ordering ? -1 : 1, $next); |
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} |
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$pipes[] = (new Sort())()(Sortable::BY_VALUES)($next); |
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} |
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$offset = $criteria->getFirstResult(); |
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$length = $criteria->getMaxResults(); |
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$pipes[] = (new Limit())()($length ?? -1)($offset ?? 0); |
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/** @var Closure(iterable<TKey, T>): Generator<TKey, T> $pipe */ |
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$pipe = (new Pipe())()(...$pipes); |
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// Point free style. |
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return $pipe; |
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}; |
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} |
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} |
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loophp /
collection
