@Override
public AssociationKey getAssociationKey() {
final AssociationType type = getType();
if (type.isAnyType()) {
return new AssociationKey(
JoinHelper.getLHSTableName(type, attributeNumber(), (OuterJoinLoadable) getSource()),
JoinHelper.getLHSColumnNames(
type, attributeNumber(), 0, (OuterJoinLoadable) getSource(), sessionFactory()));
}
final Joinable joinable = type.getAssociatedJoinable(sessionFactory());
if (type.getForeignKeyDirection() == ForeignKeyDirection.FOREIGN_KEY_FROM_PARENT) {
final String lhsTableName;
final String[] lhsColumnNames;
if (joinable.isCollection()) {
final QueryableCollection collectionPersister = (QueryableCollection) joinable;
lhsTableName = collectionPersister.getTableName();
lhsColumnNames = collectionPersister.getElementColumnNames();
} else {
final OuterJoinLoadable entityPersister = (OuterJoinLoadable) source();
lhsTableName = getLHSTableName(type, attributeNumber(), entityPersister);
lhsColumnNames =
getLHSColumnNames(type, attributeNumber(), entityPersister, sessionFactory());
}
return new AssociationKey(lhsTableName, lhsColumnNames);
} else {
return new AssociationKey(joinable.getTableName(), getRHSColumnNames(type, sessionFactory()));
}
}
/** Used to detect circularities in the joined graph, note that this method is side-effecty */
protected boolean isDuplicateAssociation(
final String lhsTable, final String[] lhsColumnNames, final AssociationType type) {
final String foreignKeyTable;
final String[] foreignKeyColumns;
if (type.getForeignKeyDirection() == ForeignKeyDirection.FOREIGN_KEY_FROM_PARENT) {
foreignKeyTable = lhsTable;
foreignKeyColumns = lhsColumnNames;
} else {
foreignKeyTable = type.getAssociatedJoinable(getFactory()).getTableName();
foreignKeyColumns = JoinHelper.getRHSColumnNames(type, getFactory());
}
return isDuplicateAssociation(foreignKeyTable, foreignKeyColumns);
}