public function 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

drupal/core/lib/Drupal/Core/Database/Query/SelectExtender.php, line 265
Definition of Drupal\Core\Database\Query\SelectExtender

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;
}