public function prepareRow($row)
{
parent::prepareRow($row);
// The more reliable field for relating a data set to its data sources
// is actually on the data source itself, linking back to this data set,
// rather than the data source reference field on this data set. If this
// backreference field has a value, use it instead.
$connection = Database::getConnection('default', $this->sourceConnection);
if (!$connection->schema()->fieldExists('content_type_data_file', 'field_data_file_data_set_nid')) {
$this->queueMessage("No back reference in Deims D6 database", MigrationBase::MESSAGE_INFORMATIONAL);
} else {
$query = $connection->select('content_type_data_file', 'c');
$query->addField('c', 'nid');
$query->condition('field_data_file_data_set_nid', $row->nid);
$query->distinct();
$results = $query->execute()->fetchCol();
if (!empty($results)) {
$row->field_dataset_datafile_ref = $results;
}
}
}
public function prepareRow($row)
{
parent::prepareRow($row);
}
