/**
* Assume all data is now valid, and only FK values remain to be translated.
*
* @param DB\Table $table The table into which to import data.
* @param array $column_map array of DB names to import names.
* @return integer The number of rows imported.
*/
public function import_data($table, $column_map)
{
global $wpdb;
$change_tracker = new \WordPress\Tabulate\DB\ChangeTracker($wpdb);
$change_tracker->open_changeset('CSV import.', true);
$count = 0;
$headers = $this->remap($column_map);
for ($row_num = 1; $row_num <= $this->row_count(); $row_num++) {
$row = array();
foreach ($this->data[$row_num] as $col_num => $value) {
if (!isset($headers[$col_num])) {
continue;
}
$db_column_name = $headers[$col_num];
$column = $table->get_column($db_column_name);
// Get actual foreign key value
if ($column->is_foreign_key()) {
if (empty($value)) {
// Ignore empty-string FKs.
continue;
} else {
$fk_rows = $this->get_fk_rows($column->get_referenced_table(), $value);
$foreign_row = array_shift($fk_rows);
$value = $foreign_row->get_primary_key();
}
}
// All other values are used as they are
$row[$db_column_name] = $value;
}
$pk_name = $table->get_pk_column()->get_name();
$pk_value = isset($row[$pk_name]) ? $row[$pk_name] : null;
$table->save_record($row, $pk_value);
$count++;
}
$change_tracker->close_changeset();
return $count;
}