// no way to know if a mapping is for an attribute (can be a relation, too)
// we take as indicator the fact that are is a "1"
Pattern p = Pattern.compile(".*\\.1\\.([0-9]+)$" );
@SuppressWarnings("unchecked")
Iterator<CrosswalkDBO> it = directory.enumerateCrosswalks();
List<GNExplainInfoDTO> list = new ArrayList<GNExplainInfoDTO>();
while (it.hasNext()) {