Bug 347368

Description Nan Li 2011-05-26 16:22:34 EDT

Build Identifier: I20110519-1138

1. Define type mappings as the following:

@Entity
public class Phone {
	@Id
	private String type;
	private Integer num;
}

@Embeddable
public class EmbeddableType {

	@JoinTable(name= "Emp_Phone") <- uses JoinTable strategy
	@ManyToOne
	private Phone phone;
}

@Entity
public class Employee {

	@ElementCollection
	private Collection<EmbeddableType> emType;
}

2. Create a mapping file and add the entity Employee to it

3. Right-click the attribute "emType" of Employee entity in the JPA structure pane and add it to the mapping xml

4. Select phone(Association Override) under Value section in the JPA Deatils view and then select "Override default" checkbox

Save the changes and a UnsupportedOperationException will be thrown saying
 
java.lang.UnsupportedOperationException: An element collection containing a nested relationship mapping using a JoinTable is not supported 

A full stack trace is attached. A couple of things needs to be considered here:

1. If we don't support JoinTable strategy, we should hide association mappings using this strategy from the "Attribute overrides" list or disable the "Override default" checkbox to prevent users from overriding these association mappings.
2. We'd better give users a validation message instead of an exception. 

Reproducible: Always