/**
* Extracts value and original type from a single piece of data.
*
* @param \Drupal\Core\TypedData\TypedDataInterface $data
* The piece of data from which to extract information.
* @param \Drupal\search_api\Item\FieldInterface $field
* The field into which to put the extracted data.
*/
public static function extractField(TypedDataInterface $data, FieldInterface $field)
{
$values = static::extractFieldValues($data);
// If the data type of the field is a custom one, then the value can be
// altered by the data type plugin.
$data_type_manager = \Drupal::service('plugin.manager.search_api.data_type');
if ($data_type_manager->hasDefinition($field->getType())) {
/** @var \Drupal\search_api\DataType\DataTypeInterface $data_type_plugin */
$data_type_plugin = $data_type_manager->createInstance($field->getType());
foreach ($values as $i => $value) {
$values[$i] = $data_type_plugin->getValue($value);
}
}
$field->setValues($values);
$field->setOriginalType($data->getDataDefinition()->getDataType());
}
/**
* Processes a single field's value.
*
* Calls process() either for each value, or each token, depending on the
* type. Also takes care of extracting list values and of fusing returned
* tokens back into a one-dimensional array.
*
* @param \Drupal\search_api\Item\FieldInterface $field
* The field to process.
*/
protected function processField(FieldInterface $field)
{
$values = $field->getValues();
$type = $field->getType();
foreach ($values as $i => &$value) {
// We restore the field's type for each run of the loop since we need the
// unchanged one as long as the current field value hasn't been updated.
$type = $field->getType();
if ($type == 'tokenized_text') {
foreach ($value as &$tokenized_value) {
$this->processFieldValue($tokenized_value['value'], $type);
}
} else {
$this->processFieldValue($value, $type);
}
if ($type == 'tokenized_text') {
$value = $this->normalizeTokens($value);
} elseif ($value === '') {
unset($values[$i]);
}
}
// We're also setting the type here as it could have changed.
$field->setType($type);
$field->setValues($values);
}
