Issue #3306204 by mkalkbrenner, drunken monkey: Added a new query option for...

Search API 1.x, dev (xxxx-xx-xx):

---------------------------------

- #3306204 by mkalkbrenner, drunken monkey: Added a new query option for

  passing non-standard language filters to the backends.

- #3262092 by attilatilman, japerry, drunken monkey, Berdir: Fixed several

  problems regarding Drupal 10 compatibility.

- #3292775 by Berdir, drunken monkey: Fixed most deprecations preventing Drupal

    // Only set the languages using $query->setLanguages() if the condition

    // would be placed directly on the query, as an AND condition.

    $query = $this->getQuery();

    $direct_language_condition = $this->realField === 'search_api_language'

      && $this->operator == 'in'

      && $query->getGroupType($this->options['group'])

      && $query->getGroupOperator() == 'AND';

    if ($direct_language_condition) {

    $op_in_required = $this->operator == 'in'

      && $query->getGroupType($this->options['group']) === 'AND'

      && $query->getGroupOperator() === 'AND';

    if ($this->realField === 'search_api_language' && $op_in_required) {

      $query->setLanguages($this->value);

    }

    else {

      parent::query();

    }

    // Also add a query option for any direct language filter including all

    // included languages, in case any component needs this information in

    // addition to the filter we placed.

    if ($op_in_required && $this->value) {

      $query->setOption('search_api_included_languages', array_values($this->value));

    }

  }

}

   *     should be returned along with the results by the backend, if possible.

   *     For backends that support retrieving fields values, this allows them to

   *     only retrieve the values that are actually needed.

   *   - search_api_included_languages: A list of all languages that should be

   *     included in the query, in case there were any restrictions. This is

   *     mostly helpful if getLanguages() returns NULL but there might still be

   *     just a subset of all available languages included.

   *   However, contrib modules might introduce arbitrary other keys with their

   *   own, special meaning. (Usually they should be prefixed with the module

   *   name, though, to avoid conflicts.)