Embedded Value Objects can't be instanciated by hibernate
---------------------------------------------------------
Key: EJB-74
URL: http://jira.andromda.org/browse/EJB-74
Project: EJB Cartridge
Type: Bug
Environment: Application Server: JBoss 4.2.0
Reporter: D. S.
Assigned to: Vance Karimi
s. Forum
http://galaxy.andromda.org/forum/viewtopic.php?t=4626&start=0&postdays=0&postorder=asc
I am using EJB3-Cartridge to generate data access layer for my application. The
domain model contains the datatype money, which I want to generate as Embedded
Value Object. Money datatype should have additionally some methods like add()
and changeCurrency(). EJB3-Cartridge generate this classes:
Code:
public abstract class Money
implements java.io.Serializable
{
...
}
Code:
public class MoneyImpl
extends Money
{
...
}
The entities using the money datatype reference the abstract class money
Code:
public class Bill
implements java.io.Serializable
{
...
@javax.persistence.Embedded
public Money getAmount()
{
return _amount;
}
}
If I try to get the entity from the database the following error occurs:
javax.persistence.PersistenceException: org.hibernate.InstantiationException:
Cannot instantiate abstract class or interface: Money
Is it possible to generate, like by entities, an embedded abstract class
MoneyEmbedded and embeddable class Money, where the additionally methods should
be implemented?
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