The serializer service is passed as new parameter to DatabaseBackendFactory and DatabaseBackend constructors

[github-actions]

https://www.drupal.org/node/3014688

Introduced in branch/version: 10.3.x / 10.3.0

The serializer service is passed now as a new parameter to DatabaseBackendFactory and DatabaseBackend constructors. Note that, for backward compatibility reasons, the parameter is optional. In Drupal 11.0.x it will be mandatory and the position in constructor signature will change.

Before

In services file:

cache.backend.database:
  class: Drupal\Core\Cache\DatabaseBackendFactory
  arguments: ['@database', '@cache_tags.invalidator.checksum', '@settings']

Service classes:

class DatabaseBackendFactory implements CacheFactoryInterface {
  ...
  public function __construct(Connection $connection, CacheTagsChecksumInterface $checksum_provider, Settings $settings = NULL) {
    ...
  }
  ...
}

class DatabaseBackend implements CacheBackendInterface {
  ...
  public function __construct(Connection $connection, CacheTagsChecksumInterface $checksum_provider, $bin, $max_rows = NULL) {
    ...
  }
  ...
}

After

In services file:

cache.backend.database:
  class: Drupal\Core\Cache\DatabaseBackendFactory
  arguments: ['@database', '@cache_tags.invalidator.checksum', '@settings', '@serialization.phpserialize']

Service classes:

class DatabaseBackendFactory implements CacheFactoryInterface {
  ...
  public function __construct(Connection $connection, CacheTagsChecksumInterface $checksum_provider, Settings $settings = NULL, ObjectAwareSerializationInterface $serializer = NULL) {
    ...
  }
  ...
}

class DatabaseBackend implements CacheBackendInterface {
  ...
  public function __construct(Connection $connection, CacheTagsChecksumInterface $checksum_provider, $bin, ObjectAwareSerializationInterface $serializer = NULL, $max_rows = NULL) {
    ...
  }
  ...
}

Other change notices for same issue

• The database cache backend supports specifying a serializer
• ObjectAwareSerializationInterface is introduced for serializers that can serialize and deserialize PHP objects