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<?php
namespace ipl\Orm;
use Generator;
use ipl\Sql\Expression;
use ipl\Sql\ExpressionInterface;
use RuntimeException;
class ResolvedExpression extends Expression
{
/** @var Generator */
protected $resolvedColumns;
/**
* Create a resolved database expression
*
* @param ExpressionInterface $expr The original expression
* @param Generator $resolvedColumns The generator as returned by {@see Resolver::requireAndResolveColumns()}
*/
public function __construct(ExpressionInterface $expr, Generator $resolvedColumns)
{
parent::__construct($expr->getStatement(), $expr->getColumns(), ...$expr->getValues());
$this->resolvedColumns = $resolvedColumns;
}
/**
* @throws RuntimeException In case the columns are not qualified yet
*/
public function getColumns()
{
if ($this->resolvedColumns->valid()) {
throw new RuntimeException('Columns are not yet qualified');
}
return parent::getColumns();
}
/**
* Get the resolved column generator
*
* @return Generator
*/
public function getResolvedColumns()
{
return $this->resolvedColumns;
}
}
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