hibernate a instanceOf

[Tomas Hubalek]

Nechtel jsi spis pouzit Class.isAssignableFrom? Hibernate Ti primo v
dokumentaci nezarucuje, ze kdyz mu das nejakou tridu, tak primo ji
dostanes. Hodne casto dostanes nejakeho jejich potomka.

> -----Original Message-----
> From: konference-bounces na java.cz 
> [mailto:konference-bounces na java.cz] On Behalf Of Ivan Polak
> Sent: Thursday, March 11, 2010 12:47 PM
> To: Java
> Subject: hibernate a instanceOf
> 
> Zdravim konferenciu,
> 
> mam v hibernate nasledovne objekty:
> 
> objekt Customer :
> 
> @Entity
> @Table(name="customer")
> @Inheritance(strategy = InheritanceType.SINGLE_TABLE) 
> @DiscriminatorColumn(name = "customer_type",
> discriminatorType=DiscriminatorType.STRING)
> public abstract class Customer extends BaseObject { ....
> }
> 
> a od neho odvodeny objekt Shipper:
> 
> @Entity
> @DiscriminatorValue("S")
> public class Shipper extends Customer {
> ...}
> 
> potrebujem pouzit nasledovny test:
> 
> returnValue = Class.forName(className).isInstance(o);
> 
> kde className je premenna typu String s hodnotou "com.project.Shipper"
> a Objekt o je cez Hibernate vytiahnuty objekt z DB, 
> zobraznene vo watch okne: Customer_$$_javassist_145 (...).
> 
> preco je returnValue FALSE, ked by podla mna malo byt TRUE ?
> 
> dakujem
> 
> Ivan
>