public interface BidirectionalEntityReference extends EntityReference
EntityReferenceAliases
for this object is the same as
for its target EntityReference, and can be looked up via
AliasResolutionContext.resolveEntityReferenceAliases(String)
using the value returned by getQuerySpaceUid()
.
This relies on reference lookups against the EntityReference instances, therefore this allows representation of the
circularity but with a little protection against potential stack overflows. This is unfortunately still a cyclic
graph. An alternative approach is to make the graph acyclic (DAG) would be to follow the process I adopted in the
original HQL Antlr v3 work with regard to always applying an alias to the "persister reference", even where that
meant creating a generated, unique identifier as the alias. That allows other parts of the tree to refer to the
"persister reference" by that alias without the need for potentially cyclic graphs (think ALIAS_REF in the current
ORM parser). Those aliases can then be mapped/catalogued against the "persister reference" for retrieval as needed.Modifier and Type | Method and Description |
---|---|
String |
getQuerySpaceUid()
The query space UID returned using
getQuerySpaceUid() must
be the same as returned by #getTargetEntityReference()#getQuerySpaceUid() |
EntityReference |
getTargetEntityReference()
Get the targeted EntityReference
|
getEntityPersister, getIdentifierDescription
getBidirectionalEntityReferences, getFetches, getPropertyPath, resolveEntityReference
EntityReference getTargetEntityReference()
String getQuerySpaceUid()
getQuerySpaceUid()
must
be the same as returned by #getTargetEntityReference()#getQuerySpaceUid()
getQuerySpaceUid
in interface EntityReference
getQuerySpaceUid
in interface FetchSource
Copyright © 2017 JBoss by Red Hat. All rights reserved.