public String addFromCollection(QueryTranslatorImpl q) throws QueryException {
Type collectionElementType = getPropertyType();
if (collectionElementType == null) {
throw new QueryException(
"must specify 'elements' for collection valued property in from clause: " + path);
}
if (collectionElementType.isEntityType()) {
// an association
QueryableCollection collectionPersister = q.getCollectionPersister(collectionRole);
Queryable entityPersister = (Queryable) collectionPersister.getElementPersister();
String clazz = entityPersister.getEntityName();
final String elementName;
if (collectionPersister.isOneToMany()) {
elementName = collectionName;
// allow index() function:
q.decoratePropertyMapping(elementName, collectionPersister);
} else { // many-to-many
q.addCollection(collectionName, collectionRole);
elementName = q.createNameFor(clazz);
addJoin(elementName, (AssociationType) collectionElementType);
}
q.addFrom(elementName, clazz, joinSequence);
currentPropertyMapping = new CollectionPropertyMapping(collectionPersister);
return elementName;
} else {
// collections of values
q.addFromCollection(collectionName, collectionRole, joinSequence);
return collectionName;
}
}
