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<?php |
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/** |
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* This file is part of Cycle ORM package. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Cycle\Database\Injection; |
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use Cycle\Database\Driver\CompilerInterface; |
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use Cycle\Database\Query\Interpolator; |
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use Cycle\Database\Query\QueryParameters; |
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use Cycle\Database\Query\SelectQuery; |
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/** |
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* This fragment is used to inject a whole select statement into |
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* FROM and SELECT parts of the query. |
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* |
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* Examples: |
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* |
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* ``` |
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* $subQuery = new SubQuery($queryBuilder->select()->from(['users']),'u'); |
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* $query = $queryBuilder->select()->from($subQuery); |
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* ``` |
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* |
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* Will provide SQL like this: SELECT * FROM (SELECT * FROM users) AS u |
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* |
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* ``` |
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* $subQuery = new SubQuery($queryBuilder->select()->from(['users']),'u'); |
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* $query = $queryBuilder->select($subQuery)->from(['employee']); |
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* ``` |
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* |
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* Will provide SQL like this: SELECT *, (SELECT * FROM users) AS u FROM employee |
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*/ |
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class SubQuery implements FragmentInterface |
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{ |
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private SelectQuery $query; |
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private string $alias; |
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/** @var ParameterInterface[] */ |
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private array $parameters; |
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public function __construct(SelectQuery $query, string $alias) |
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{ |
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$this->query = $query; |
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$this->alias = $alias; |
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$parameters = new QueryParameters(); |
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$this->query->sqlStatement($parameters); |
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$this->parameters = $parameters->getParameters(); |
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} |
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public function getType(): int |
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{ |
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return CompilerInterface::SUBQUERY; |
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} |
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public function getTokens(): array |
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{ |
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return \array_merge( |
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[ |
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'alias' => $this->alias, |
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'parameters' => $this->parameters, |
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], |
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$this->query->getTokens(), |
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); |
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} |
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public function getQuery(): SelectQuery |
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{ |
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return $this->query; |
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} |
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public function __toString(): string |
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{ |
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$parameters = new QueryParameters(); |
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return Interpolator::interpolate( |
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$this->query->sqlStatement($parameters), |
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$parameters->getParameters(), |
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); |
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} |
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} |
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cycle /
database
