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<?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 MySQL database driver.
*/
class MySqlDriver implements Nette\Database\Driver
{
use Nette\SmartObject;
public const
ERROR_ACCESS_DENIED = 1045,
ERROR_DUPLICATE_ENTRY = 1062,
ERROR_DATA_TRUNCATED = 1265;
/** @var Nette\Database\Connection */
private $connection;
/**
* Driver options:
* - charset => character encoding to set (default is utf8 or utf8mb4 since MySQL 5.5.3)
* - sqlmode => see http://dev.mysql.com/doc/refman/5.0/en/server-sql-mode.html
*/
public function initialize(Nette\Database\Connection $connection, array $options): void
{
$this->connection = $connection;
$charset = $options['charset']
?? (version_compare($connection->getPdo()->getAttribute(\PDO::ATTR_SERVER_VERSION), '5.5.3', '>=') ? 'utf8mb4' : 'utf8');
if ($charset) {
$connection->query('SET NAMES ?', $charset);
}
if (isset($options['sqlmode'])) {
$connection->query('SET sql_mode=?', $options['sqlmode']);
}
}
public function convertException(\PDOException $e): Nette\Database\DriverException
{
$code = $e->errorInfo[1] ?? null;
if (in_array($code, [1216, 1217, 1451, 1452, 1701], true)) {
return Nette\Database\ForeignKeyConstraintViolationException::from($e);
} elseif (in_array($code, [1062, 1557, 1569, 1586], true)) {
return Nette\Database\UniqueConstraintViolationException::from($e);
} elseif ($code >= 2001 && $code <= 2028) {
return Nette\Database\ConnectionException::from($e);
} elseif (in_array($code, [1048, 1121, 1138, 1171, 1252, 1263, 1566], true)) {
return Nette\Database\NotNullConstraintViolationException::from($e);
} else {
return Nette\Database\DriverException::from($e);
}
}
/********************* SQL ****************d*g**/
public function delimite(string $name): string
{
// @see http://dev.mysql.com/doc/refman/5.0/en/identifiers.html
return '`' . str_replace('`', '``', $name) . '`';
}
public function formatDateTime(\DateTimeInterface $value): string
{
return $value->format("'Y-m-d H:i:s'");
}
public function formatDateInterval(\DateInterval $value): string
{
return $value->format("'%r%h:%I:%S'");
}
public function formatLike(string $value, int $pos): string
{
$value = str_replace('\\', '\\\\', $value);
$value = addcslashes(substr($this->connection->quote($value), 1, -1), '%_');
return ($pos <= 0 ? "'%" : "'") . $value . ($pos >= 0 ? "%'" : "'");
}
public function applyLimit(string &$sql, ?int $limit, ?int $offset): void
{
if ($limit < 0 || $offset < 0) {
throw new Nette\InvalidArgumentException('Negative offset or limit.');
} elseif ($limit !== null || $offset) {
// see http://dev.mysql.com/doc/refman/5.0/en/select.html
$sql .= ' LIMIT ' . ($limit ?? '18446744073709551615')
. ($offset ? ' OFFSET ' . $offset : '');
}
}
/********************* reflection ****************d*g**/
public function getTables(): array
{
$tables = [];
foreach ($this->connection->query('SHOW FULL TABLES') as $row) {
$tables[] = [
'name' => $row[0],
'view' => ($row[1] ?? null) === 'VIEW',
];
}
return $tables;
}
public function getColumns(string $table): array
{
$columns = [];
foreach ($this->connection->query('SHOW FULL COLUMNS FROM ' . $this->delimite($table)) as $row) {
$row = array_change_key_case((array) $row, CASE_LOWER);
$type = explode('(', $row['type']);
$columns[] = [
'name' => $row['field'],
'table' => $table,
'nativetype' => strtoupper($type[0]),
'size' => isset($type[1]) ? (int) $type[1] : null,
'nullable' => $row['null'] === 'YES',
'default' => $row['default'],
'autoincrement' => $row['extra'] === 'auto_increment',
'primary' => $row['key'] === 'PRI',
'vendor' => (array) $row,
];
}
return $columns;
}
public function getIndexes(string $table): array
{
$indexes = [];
foreach ($this->connection->query('SHOW INDEX FROM ' . $this->delimite($table)) as $row) {
$id = $row['Key_name'];
$indexes[$id]['name'] = $id;
$indexes[$id]['unique'] = !$row['Non_unique'];
$indexes[$id]['primary'] = $row['Key_name'] === 'PRIMARY';
$indexes[$id]['columns'][$row['Seq_in_index'] - 1] = $row['Column_name'];
}
return array_values($indexes);
}
public function getForeignKeys(string $table): array
{
$keys = [];
$query = 'SELECT CONSTRAINT_NAME, COLUMN_NAME, REFERENCED_TABLE_NAME, REFERENCED_COLUMN_NAME FROM information_schema.KEY_COLUMN_USAGE '
. 'WHERE TABLE_SCHEMA = DATABASE() AND REFERENCED_TABLE_NAME IS NOT NULL AND TABLE_NAME = ' . $this->connection->quote($table);
foreach ($this->connection->query($query) as $id => $row) {
$keys[$id]['name'] = $row['CONSTRAINT_NAME'];
$keys[$id]['local'] = $row['COLUMN_NAME'];
$keys[$id]['table'] = $row['REFERENCED_TABLE_NAME'];
$keys[$id]['foreign'] = $row['REFERENCED_COLUMN_NAME'];
}
return array_values($keys);
}
public function getColumnTypes(\PDOStatement $statement): array
{
$types = [];
$count = $statement->columnCount();
for ($col = 0; $col < $count; $col++) {
$meta = $statement->getColumnMeta($col);
if (isset($meta['native_type'])) {
$types[$meta['name']] = $type = Nette\Database\Helpers::detectType($meta['native_type']);
if ($type === Nette\Database\IStructure::FIELD_TIME) {
$types[$meta['name']] = Nette\Database\IStructure::FIELD_TIME_INTERVAL;
}
}
}
return $types;
}
public function isSupported(string $item): bool
{
// MULTI_COLUMN_AS_OR_COND due to mysql bugs:
// - http://bugs.mysql.com/bug.php?id=31188
// - http://bugs.mysql.com/bug.php?id=35819
// and more.
return $item === self::SUPPORT_SELECT_UNGROUPED_COLUMNS || $item === self::SUPPORT_MULTI_COLUMN_AS_OR_COND;
}
}
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