protected function DatabaseCacheTagsChecksum::getTagInvalidationCounts in Drupal 9

Same name and namespace in other branches

1. 8 core/lib/Drupal/Core/Cache/DatabaseCacheTagsChecksum.php \Drupal\Core\Cache\DatabaseCacheTagsChecksum::getTagInvalidationCounts()

Fetches invalidation counts for cache tags.

Parameters

string[] $tags: The list of tags to fetch invalidations for.

Return value

int[] List of invalidation counts keyed by the respective cache tag.

Overrides CacheTagsChecksumTrait::getTagInvalidationCounts

File

core/lib/Drupal/Core/Cache/DatabaseCacheTagsChecksum.php, line 58

Class

DatabaseCacheTagsChecksum

Cache tags invalidations checksum implementation that uses the database.

Namespace

Drupal\Core\Cache

Code

protected function getTagInvalidationCounts(array $tags) {
  try {
    return $this->connection
      ->query('SELECT [tag], [invalidations] FROM {cachetags} WHERE [tag] IN ( :tags[] )', [
      ':tags[]' => $tags,
    ])
      ->fetchAllKeyed();
  } catch (\Exception $e) {

    // If the table does not exist yet, create.
    if (!$this
      ->ensureTableExists()) {
      $this
        ->catchException($e);
    }
  }
  return [];
}