[hibernate-issues] [JIRA] (HHH-16729) Instantiate a proxy of the correct class for ManyToOne associated to an inheritance hierarchy

Guillaume Toison ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=70121%3... ) *commented* on HHH-16729 ( https://hibernate.atlassian.net/browse/HHH-16729?atlOrigin=eyJpIjoiYWNlOW... ) Re: Instantiate a proxy of the correct class for ManyToOne associated to an inheritance hierarchy ( https://hibernate.atlassian.net/browse/HHH-16729?atlOrigin=eyJpIjoiYWNlOW... ) Thanks for replying, I am aware of Hibernate.isInstance() and Hibernate.unproxy() methods but if possible I’d like to be able to write idiomatic Java code, for instance: if (food instanceof Cheese cheese) { // use the cheese } Instead of: if (Hibernate.isInstance(food, Cheese.class)) { Cheese cheese = Hibernate.unproxy(food, Cheese.class); // use the cheese } One benefit of having the right class is that we wouldn’t need to trigger a load if we just need an instanceof test. I’ve got to admit that I’m not familiar with @Any so I’ll look into that 👍 Some of the associations I have are collections fetched using the new `@SQLSelect` so I’m sure sure if that scenario would be supported. Assuming that item now needs a discriminator, I would need to tell Hibernate where that new column would be, but JPA’s @FieldResult ` does not support it, right? @SqlResultSetMapping(name="OrderResults", entities={ @EntityResult(entityClass=com.acme.Order.class, fields={ @FieldResult(name="id", column="order_id"), @FieldResult(name="quantity", column="order_quantity"), @FieldResult(name="item", column="order_item")}) }) ( https://hibernate.atlassian.net/browse/HHH-16729#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16729#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100225- sha1:a994ca2 )