boolean retVal = startMapKeyColumn(attrs);
// check if name is not set, set it to default: the
// concatenation of the name of the referencing property
// or field name, "-", "KEY"
FieldMapping fm = (FieldMapping) peekElement();
MappingInfo info = fm.getKeyMapping().getValueInfo();
List cols = info.getColumns();
Column col = (Column)cols.get(0);
if (col.getName() == null)
col.setName(fm.getName() + "_" + "KEY");
return retVal;