protected Joins join(Joins joins, ClassMapping elem) {
ValueMapping vm = field.getElementMapping();
ForeignKey fk = vm.getForeignKey(elem);
ClassMapping owner = field.getDefiningMapping();
while (fk.getPrimaryKeyTable() != owner.getTable()) {
joins = owner.joinSuperclass(joins, false);
owner = owner.getJoinablePCSuperclassMapping();
if (owner == null) throw new InternalException();
}
return joins.joinRelation(field.getName(), fk, elem, vm.getSelectSubclasses(), true, true);
}
public Joins join(Joins joins, boolean forceOuter) {
ValueMapping elem = field.getElementMapping();
ClassMapping[] clss = elem.getIndependentTypeMappings();
if (clss.length != 1) throw RelationStrategies.unjoinable(elem);
if (forceOuter)
return joins.outerJoinRelation(
field.getName(),
elem.getForeignKey(clss[0]),
clss[0],
elem.getSelectSubclasses(),
true,
true);
return joins.joinRelation(
field.getName(),
elem.getForeignKey(clss[0]),
clss[0],
elem.getSelectSubclasses(),
true,
true);
}