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<?php
namespace Laminas\Db\Adapter\Driver\Pdo\Feature;
use Closure;
use Laminas\Db\Adapter\Driver\Feature\AbstractFeature;
use Laminas\Db\Adapter\Driver\Pdo;
use function stripos;
/**
* OracleRowCounter
*/
class OracleRowCounter extends AbstractFeature
{
/**
* @return string
*/
public function getName()
{
return 'OracleRowCounter';
}
/**
* @return int
*/
public function getCountForStatement(Pdo\Statement $statement)
{
$countStmt = clone $statement;
$sql = $statement->getSql();
if ($sql === '' || stripos($sql, 'select') === false) {
return;
}
$countSql = 'SELECT COUNT(*) as "count" FROM (' . $sql . ')';
$countStmt->prepare($countSql);
$result = $countStmt->execute();
$countRow = $result->getResource()->fetch(\PDO::FETCH_ASSOC);
unset($statement, $result);
return $countRow['count'];
}
/**
* @param string $sql
* @return null|int
*/
public function getCountForSql($sql)
{
if (stripos($sql, 'select') === false) {
return;
}
$countSql = 'SELECT COUNT(*) as count FROM (' . $sql . ')';
/** @var \PDO $pdo */
$pdo = $this->driver->getConnection()->getResource();
$result = $pdo->query($countSql);
$countRow = $result->fetch(\PDO::FETCH_ASSOC);
return $countRow['count'];
}
/**
* @param Pdo\Statement|string $context
* @return Closure
*/
public function getRowCountClosure($context)
{
return function () use ($context) {
return $context instanceof Pdo\Statement
? $this->getCountForStatement($context)
: $this->getCountForSql($context);
};
}
}