public function SelectExtender::forUpdate in Drupal 8

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/Database/Query/SelectExtender.php \Drupal\Core\Database\Query\SelectExtender::forUpdate()

Add FOR UPDATE to the query.

FOR UPDATE prevents the rows retrieved by the SELECT statement from being modified or deleted by other transactions until the current transaction ends. Other transactions that attempt UPDATE, DELETE, or SELECT FOR UPDATE of these rows will be blocked until the current transaction ends.

Parameters

$set: IF TRUE, FOR UPDATE will be added to the query, if FALSE then it won't.

Return value

\Drupal\Core\Database\Query\ConditionInterface The called object.

Overrides SelectInterface::forUpdate

File

core/lib/Drupal/Core/Database/Query/SelectExtender.php, line 432

Class

SelectExtender

The base extender class for Select queries.

Namespace

Drupal\Core\Database\Query

Code

public function forUpdate($set = TRUE) {
  $this->query
    ->forUpdate($set);
  return $this;
}