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Code Issues Releases Wiki Activity

- implemented applyLimit() in PDO driver

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This commit is contained in:
David Grudl
2008-11-07 10:47:57 +00:00
parent d08a5d3856
commit 9f8b19f1fb
4 changed files with 32 additions and 4 deletions
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31
dibi/drivers/pdo.php
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@@ -305,7 +305,36 @@ class DibiPdoDriver extends DibiObject implements IDibiDriver
*/
public function applyLimit(&$sql, $limit, $offset)
{
throw new NotSupportedException('PDO does not support applying limit or offset.');
if ($limit < 0 && $offset < 1) return;
switch ($this->connection->getAttribute(PDO::ATTR_DRIVER_NAME)) {
case 'mysql':
$sql .= ' LIMIT ' . ($limit < 0 ? '18446744073709551615' : (int) $limit)
. ($offset > 0 ? ' OFFSET ' . (int) $offset : '');
break;
case 'pgsql':
if ($limit >= 0) $sql .= ' LIMIT ' . (int) $limit;
if ($offset > 0) $sql .= ' OFFSET ' . (int) $offset;
break;
case 'sqlite':
case 'sqlite2':
case 'oci':
$sql .= ' LIMIT ' . $limit . ($offset > 0 ? ' OFFSET ' . (int) $offset : '');
break;
case 'odbc':
case 'mssql':
if ($offset < 1) {
$sql = 'SELECT TOP ' . (int) $limit . ' * FROM (' . $sql . ')';
break;
}
// intentionally break omitted
default:
throw new NotSupportedException('PDO or driver does not support applying limit or offset.');
}
}