public String[] getColumnNames() {
		Set<String> attrNameSet = getColumns().keySet();
		return attrNameSet.toArray(new String[attrNameSet.size()]);
	}
public String [ ] getColumnNames ( ) { Set < String > attrNameSet = getColumns ( ) . keySet ( ) ; return attrNameSet . toArray ( new String [ attrNameSet . size ( ) ] ) ; }
Return column names of this record.