one-to-one with property-ref always non-lazy -------------------------------------------- Key: HIBERNATE-119 URL: https://issues.jboss.org/browse/HIBERNATE-119 Project: Hibernate Integration Issue Type: Feature Request Reporter: Sandeep Vaid Assignee: Steve Ebersole I have one-to-one relationship between Product and ProductBasic. PRODUCT ------> PRODUCTID(PK) PRODUCT ------> PID, CODE, STARTTIME (Composite-key) and PID is FK In product.hbm.xml <one-to-one name="productBasic" cascade="save-update" property-ref="activeProduct" constrained="true"> <formula>PRODUCTID</formula> </one-to-one> ProductBasic.hbm.xml as : <properties name="activeProduct"> <many-to-one name="product" class="Product" insert="false" update="false" lazy="proxy" /> </properties> When i am using property-ref, and try to load all Products, it fetches ProductBasic also as : select * from PRODUCT; //suppose it return 2 records with productId as 100 and 101 respectively. select * from PRODUCTBASIC where productId='100' select * from PRODUCTBASIC where productId='101' How can i fetch ProductBasic in a Non-Lazy manner in this case. I found few information regarding my problem as : https://forum.hibernate.org/viewtopic.php?f=25&t=969713 NOTE: Without property-ref, we can load one-to-one lazily (by sepcifying constrained="true")....... outer-join="true" It's shows the message as : DEBUG - total objects hydrated: 1 DEBUG - resolving associations for [model.Product#1] DEBUG - loading entity: [model.ProductName#1] DEBUG - creating new proxy for entity DEBUG - done materializing entity [model.Product#1] Now the thing now remaining in this is to load one-to-one lazily with property-ref. EntityType.resolve() line 382 if ( isReferenceToPrimaryKey() ) { return resolveIdentifier( (Serializable) value, session ); } else { return loadByUniqueKey( getAssociatedEntityName(), uniqueKeyPropertyName, value, session ); } and in loadByUniqueKey() method, there is a comment : //TODO: implement caching?! proxies?! I think this is the culprit