Current File : //www/varak.net/losik.varak.net/vendor/nette/database/src/Database/Drivers/SqlsrvDriver.php
<?php
/**
* This file is part of the Nette Framework (https://nette.org)
* Copyright (c) 2004 David Grudl (https://davidgrudl.com)
*/
declare(strict_types=1);
namespace Nette\Database\Drivers;
use Nette;
/**
* Supplemental SQL Server 2005 and later database driver.
*/
class SqlsrvDriver implements Nette\Database\Driver
{
use Nette\SmartObject;
/** @var Nette\Database\Connection */
private $connection;
/** @var string */
private $version;
public function initialize(Nette\Database\Connection $connection, array $options): void
{
$this->connection = $connection;
$this->version = $connection->getPdo()->getAttribute(\PDO::ATTR_SERVER_VERSION);
}
public function convertException(\PDOException $e): Nette\Database\DriverException
{
return Nette\Database\DriverException::from($e);
}
/********************* SQL ****************d*g**/
public function delimite(string $name): string
{
/** @see https://msdn.microsoft.com/en-us/library/ms176027.aspx */
return '[' . str_replace(']', ']]', $name) . ']';
}
public function formatDateTime(\DateTimeInterface $value): string
{
/** @see https://msdn.microsoft.com/en-us/library/ms187819.aspx */
return $value->format("'Y-m-d\\TH:i:s'");
}
public function formatDateInterval(\DateInterval $value): string
{
throw new Nette\NotSupportedException;
}
public function formatLike(string $value, int $pos): string
{
/** @see https://msdn.microsoft.com/en-us/library/ms179859.aspx */
$value = strtr($value, ["'" => "''", '%' => '[%]', '_' => '[_]', '[' => '[[]']);
return ($pos <= 0 ? "'%" : "'") . $value . ($pos >= 0 ? "%'" : "'");
}
public function applyLimit(string &$sql, ?int $limit, ?int $offset): void
{
if ($limit < 0 || $offset < 0) {
throw new Nette\InvalidArgumentException('Negative offset or limit.');
} elseif (version_compare($this->version, '11', '<')) { // 11 == SQL Server 2012
if ($offset) {
throw new Nette\NotSupportedException('Offset is not supported by this database.');
} elseif ($limit !== null) {
$sql = preg_replace('#^\s*(SELECT(\s+DISTINCT|\s+ALL)?|UPDATE|DELETE)#i', '$0 TOP ' . $limit, $sql, 1, $count);
if (!$count) {
throw new Nette\InvalidArgumentException('SQL query must begin with SELECT, UPDATE or DELETE command.');
}
}
} elseif ($limit !== null || $offset) {
// requires ORDER BY, see https://technet.microsoft.com/en-us/library/gg699618(v=sql.110).aspx
$sql .= ' OFFSET ' . (int) $offset . ' ROWS '
. 'FETCH NEXT ' . (int) $limit . ' ROWS ONLY';
}
}
/********************* reflection ****************d*g**/
public function getTables(): array
{
$tables = [];
foreach ($this->connection->query("
SELECT
name,
CASE type
WHEN 'U' THEN 0
WHEN 'V' THEN 1
END AS [view]
FROM
sys.objects
WHERE
type IN ('U', 'V')
") as $row) {
$tables[] = [
'name' => $row->name,
'view' => (bool) $row->view,
];
}
return $tables;
}
public function getColumns(string $table): array
{
$columns = [];
foreach ($this->connection->query("
SELECT
c.name AS name,
o.name AS [table],
UPPER(t.name) AS nativetype,
NULL AS size,
c.is_nullable AS nullable,
OBJECT_DEFINITION(c.default_object_id) AS [default],
c.is_identity AS autoincrement,
CASE WHEN i.index_id IS NULL
THEN 0
ELSE 1
END AS [primary]
FROM
sys.columns c
JOIN sys.objects o ON c.object_id = o.object_id
LEFT JOIN sys.types t ON c.user_type_id = t.user_type_id
LEFT JOIN sys.key_constraints k ON o.object_id = k.parent_object_id AND k.type = 'PK'
LEFT JOIN sys.index_columns i ON k.parent_object_id = i.object_id AND i.index_id = k.unique_index_id AND i.column_id = c.column_id
WHERE
o.type IN ('U', 'V')
AND o.name = {$this->connection->quote($table)}
") as $row) {
$row = (array) $row;
$row['vendor'] = $row;
$row['nullable'] = (bool) $row['nullable'];
$row['autoincrement'] = (bool) $row['autoincrement'];
$row['primary'] = (bool) $row['primary'];
$columns[] = $row;
}
return $columns;
}
public function getIndexes(string $table): array
{
$indexes = [];
foreach ($this->connection->query("
SELECT
i.name AS name,
CASE WHEN i.is_unique = 1 OR i.is_unique_constraint = 1
THEN 1
ELSE 0
END AS [unique],
i.is_primary_key AS [primary],
c.name AS [column]
FROM
sys.indexes i
JOIN sys.index_columns ic ON i.object_id = ic.object_id AND i.index_id = ic.index_id
JOIN sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
JOIN sys.tables t ON i.object_id = t.object_id
WHERE
t.name = {$this->connection->quote($table)}
ORDER BY
i.index_id,
ic.index_column_id
") as $row) {
$id = $row['name'];
$indexes[$id]['name'] = $id;
$indexes[$id]['unique'] = (bool) $row['unique'];
$indexes[$id]['primary'] = (bool) $row['primary'];
$indexes[$id]['columns'][] = $row['column'];
}
return array_values($indexes);
}
public function getForeignKeys(string $table): array
{
// Does't work with multicolumn foreign keys
$keys = [];
foreach ($this->connection->query("
SELECT
fk.name AS name,
cl.name AS local,
tf.name AS [table],
cf.name AS [column]
FROM
sys.foreign_keys fk
JOIN sys.foreign_key_columns fkc ON fk.object_id = fkc.constraint_object_id
JOIN sys.tables tl ON fkc.parent_object_id = tl.object_id
JOIN sys.columns cl ON fkc.parent_object_id = cl.object_id AND fkc.parent_column_id = cl.column_id
JOIN sys.tables tf ON fkc.referenced_object_id = tf.object_id
JOIN sys.columns cf ON fkc.referenced_object_id = cf.object_id AND fkc.referenced_column_id = cf.column_id
WHERE
tl.name = {$this->connection->quote($table)}
") as $row) {
$keys[$row->name] = (array) $row;
}
return array_values($keys);
}
public function getColumnTypes(\PDOStatement $statement): array
{
$types = [];
$count = $statement->columnCount();
for ($col = 0; $col < $count; $col++) {
$meta = $statement->getColumnMeta($col);
if (
isset($meta['sqlsrv:decl_type'])
&& $meta['sqlsrv:decl_type'] !== 'timestamp'
) { // timestamp does not mean time in sqlsrv
$types[$meta['name']] = Nette\Database\Helpers::detectType($meta['sqlsrv:decl_type']);
} elseif (isset($meta['native_type'])) {
$types[$meta['name']] = Nette\Database\Helpers::detectType($meta['native_type']);
}
}
return $types;
}
public function isSupported(string $item): bool
{
return $item === self::SUPPORT_SUBSELECT;
}
}
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