Hello,

first: I'm an absolute hibernate beginner. I'd bee searching the web for quite a while concerning this topic but haven't found an answer. I'd like to know if ithe following scenario is possible with hibernate:
I'd like to implement a service that persists an object X from my domain model. Therefore I annotate X to be persisted with hibernate. X has got a reference to a non-hibernate object Y. Within the table, only the id attribute of Y should be stored but no other attributes. The Y object should be somehow loaded when calling X.getY(). The external API has got a Method like YService.getY(yId).


Resulting table columns for X shoud look like these:

id string number yId


So I hope that anybody understoods my problem and can help me to find a solution or at least tell be if storing id attributes of external referenced objects are possible or not.

Regards
Felix

Hello,

did you try making the Y attribute Transient (with the @Transient annotation)?
If you only want to store Y's id you can create an attribute Yid in class X, and store that attribute in the DB instead of Y.

You can use @PrePersist and @PostLoad events to load Yid and your real Y respectively.

Hope that helps in some way.
Greetings