class DatabaseEventSubscriber

Same name and namespace in other branches
  1. 11.x core/modules/system/tests/modules/database_test/src/EventSubscriber/DatabaseEventSubscriber.php \Drupal\database_test\EventSubscriber\DatabaseEventSubscriber

Responds to database API events.

Hierarchy

  • class \Drupal\database_test\EventSubscriber\DatabaseEventSubscriber extends \Symfony\Component\EventDispatcher\EventSubscriberInterface

Expanded class hierarchy of DatabaseEventSubscriber

1 file declares its use of DatabaseEventSubscriber
DatabaseEventTest.php in core/tests/Drupal/KernelTests/Core/Database/DatabaseEventTest.php

File

core/modules/system/tests/modules/database_test/src/EventSubscriber/DatabaseEventSubscriber.php, line 13

Namespace

Drupal\database_test\EventSubscriber
View on git.drupalcode.org
View source 
class DatabaseEventSubscriber implements EventSubscriberInterface {
  
  /**
   * A counter of started statement executions.
   */
  public int $countStatementStarts = 0;
  
  /**
   * A counter of finished statement executions.
   */
  public int $countStatementEnds = 0;
  
  /**
   * A counter of failed statement executions.
   */
  public int $countStatementFailures = 0;
  
  /**
   * A map of statements being executed.
   */
  public array $statementIdsInExecution = [];
  
  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents() : array {
    return [
      StatementExecutionStartEvent::class => 'onStatementExecutionStart',
      StatementExecutionEndEvent::class => 'onStatementExecutionEnd',
      StatementExecutionFailureEvent::class => 'onStatementExecutionFailure',
    ];
  }
  
  /**
   * Subscribes to a statement execution started event.
   *
   * @param \Drupal\Core\Database\Event\StatementExecutionStartEvent $event
   *   The database event.
   */
  public function onStatementExecutionStart(StatementExecutionStartEvent $event) : void {
    $this->statementIdsInExecution[$event->statementObjectId] = TRUE;
    $this->countStatementStarts++;
  }
  
  /**
   * Subscribes to a statement execution finished event.
   *
   * @param \Drupal\Core\Database\Event\StatementExecutionEndEvent $event
   *   The database event.
   */
  public function onStatementExecutionEnd(StatementExecutionEndEvent $event) : void {
    unset($this->statementIdsInExecution[$event->statementObjectId]);
    $this->countStatementEnds++;
  }
  
  /**
   * Subscribes to a statement execution failure event.
   *
   * @param \Drupal\Core\Database\Event\StatementExecutionFailureEvent $event
   *   The database event.
   */
  public function onStatementExecutionFailure(StatementExecutionFailureEvent $event) : void {
    unset($this->statementIdsInExecution[$event->statementObjectId]);
    $this->countStatementFailures++;
  }

}

Members

Title Modifiers Object type Summary
DatabaseEventSubscriber::$countStatementEnds public property A counter of finished statement executions.
DatabaseEventSubscriber::$countStatementFailures public property A counter of failed statement executions.
DatabaseEventSubscriber::$countStatementStarts public property A counter of started statement executions.
DatabaseEventSubscriber::$statementIdsInExecution public property A map of statements being executed.
DatabaseEventSubscriber::getSubscribedEvents public static function
DatabaseEventSubscriber::onStatementExecutionEnd public function Subscribes to a statement execution finished event.
DatabaseEventSubscriber::onStatementExecutionFailure public function Subscribes to a statement execution failure event.
DatabaseEventSubscriber::onStatementExecutionStart public function Subscribes to a statement execution started event.

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