/**
* Returns either all data type definitions, or a specific one.
*
* @param string|null $type
* (optional) If specified, the type whose definition should be returned.
*
* @return string[][]|string[]|null
* If $type was not given, an array containing all data types. Otherwise,
* the definition for the given type, or NULL if it is unknown.
*
* @see \Drupal\search_api\Utility::getDefaultDataTypes()
* @see \Drupal\search_api\DataTypePluginManager::getCustomDataTypes()
*/
public function getDataTypeDefinitions($type = NULL)
{
if (!isset($this->dataTypes)) {
$default_types = Utility::getDefaultDataTypes();
$custom_data_types = [];
foreach ($this->getCustomDataTypes() as $name => $custom_data_type) {
$custom_data_types[$name] = array('label' => $custom_data_type->label(), 'description' => $custom_data_type->getDescription(), 'fallback' => $custom_data_type->getFallbackType());
}
$this->dataTypes = array_merge($default_types, $custom_data_types);
}
if (isset($type)) {
return isset($this->dataTypes[$type]) ? $this->dataTypes[$type] : NULL;
}
return $this->dataTypes;
}
