FeedClearHandler.php in Feeds 8.3

Namespace

Drupal\feeds

File

src/FeedClearHandler.php

<?php

namespace Drupal\feeds;

use Drupal\feeds\Event\ClearEvent;
use Drupal\feeds\Event\FeedsEvents;
use Drupal\feeds\Event\InitEvent;

/**
 * Deletes the items of a feed.
 */
class FeedClearHandler extends FeedHandlerBase {

  /**
   * {@inheritdoc}
   */
  public function startBatchClear(FeedInterface $feed) {
    $feed
      ->lock();
    $feed
      ->clearStates();
    $batch = [
      'title' => $this
        ->t('Deleting items from: %title', [
        '%title' => $feed
          ->label(),
      ]),
      'init_message' => $this
        ->t('Deleting items from: %title', [
        '%title' => $feed
          ->label(),
      ]),
      'operations' => [
        [
          [
            $this,
            'clear',
          ],
          [
            $feed,
          ],
        ],
      ],
      'progress_message' => $this
        ->t('Deleting items from: %title', [
        '%title' => $feed
          ->label(),
      ]),
      'error_message' => $this
        ->t('An error occored while clearing %title.', [
        '%title' => $feed
          ->label(),
      ]),
    ];
    $this
      ->batchSet($batch);
  }

  /**
   * Deletes all items from a feed.
   *
   * @param \Drupal\feeds\FeedInterface $feed
   *   The feed entity from which to delete all items.
   * @param array $context
   *   Status of the batch.
   */
  public function clear(FeedInterface $feed, array &$context) {
    try {
      $this
        ->dispatchEvent(FeedsEvents::INIT_CLEAR, new InitEvent($feed));
      $this
        ->dispatchEvent(FeedsEvents::CLEAR, new ClearEvent($feed));
    } catch (\Exception $exception) {

      // Do nothing yet.
    }

    // Clean up.
    $context['finished'] = $feed
      ->progressClearing();
    if (isset($exception)) {
      $context['finished'] = StateInterface::BATCH_COMPLETE;
    }
    if ($context['finished'] === StateInterface::BATCH_COMPLETE) {
      $feed
        ->finishClear();
      $feed
        ->save();
      $feed
        ->unlock();
    }
    else {
      $feed
        ->saveStates();
    }
    if (isset($exception)) {
      throw $exception;
    }
  }

}

Classes

Name	Description
FeedClearHandler	Deletes the items of a feed.