public function Connection::escapeField in Drupal driver for SQL Server and SQL Azure 8

Same name and namespace in other branches

1. 8.2 drivers/lib/Drupal/Driver/Database/sqlsrv/Connection.php \Drupal\Driver\Database\sqlsrv\Connection::escapeField()
2. 3.0.x drivers/lib/Drupal/Driver/Database/sqlsrv/Connection.php \Drupal\Driver\Database\sqlsrv\Connection::escapeField()

Escapes a field name string.

Force all field names to be strictly alphanumeric-plus-underscore. For some database drivers, it may also wrap the field name in database-specific escape characters.

Parameters

string $field: An unsanitized field name.

Return value

string The sanitized field name.

Overrides Connection::escapeField

File

drivers/lib/Drupal/Driver/Database/sqlsrv/Connection.php, line 394

Definition of Drupal\Driver\Database\sqlsrv\Connection

Class

Connection

Temporary tables: temporary table support is done by means of global temporary tables (#) to avoid the use of DIRECT QUERIES. You can enable and disable the use of direct queries with $this->driver_settings->defaultDirectQuery =…

Namespace

Drupal\Driver\Database\sqlsrv

Code

public function escapeField($field) {

  // TODO: Not really clear if using a cache here is really useful as the uncached implementation
  // is fast out of the box anyways. Needs profiling.
  if ($cache = $this->cache
    ->get($field, 'schema_escapeField')) {
    return $cache->data;
  }
  if (strlen($field) > 0) {
    $result = implode('.', array_map(array(
      $this,
      'quoteIdentifier',
    ), explode('.', preg_replace('/[^A-Za-z0-9_.]+/', '', $field))));
  }
  else {
    $result = '';
  }
  $this->cache
    ->set($field, $result, 'schema_escapeField');
  return $result;
}