Hi,
I have following problem... I have POJO object with simple fields like

Problem is, that in DB property1, property2... HAS TO BE mapped to standalone table (let's say StringPropertyTable), with foreign key to "parent table", key = "property1"/"property2", value = value of the property. How can I do that mapping in Hibernate? I thought discriminator is the key for this problem, but I can not figure out, how can I tell Hibernate that this one-to-many relation filtered by "key" is in fact one-to-one relation... POJO object and DB schema cannot be modified! Thanks for any suggestions.

I'm thinking this should work just fine:

@Entity
class MainEntity {
.
.
.

@OneToMany
@JoinColumn(name="whatever")
private StringPropertiesEntity stringProperties ;

.
.
.
}

class StringPropertiesEntity {

@(Annotations)
private int id ;

@Column(name="key")
private String key ;

@Column(name="value")
private String value ;

/// getters/setters ///
}