@Target(value={METHOD,FIELD})
@Retention(value=RUNTIME)
public @interface JoinColumns
JoinColumn annotations for the same relationship.
When the JoinColumns annotation is used,
both the name and the referencedColumnName elements
must be specified in each such JoinColumn annotation.
Example:
@ManyToOne
@JoinColumns({
@JoinColumn(name="ADDR_ID", referencedColumnName="ID"),
@JoinColumn(name="ADDR_ZIP", referencedColumnName="ZIP")
})
public Address getAddress() { return address; }
JoinColumn,
ForeignKey| Modifier and Type | Required Element and Description |
|---|---|
JoinColumn[] |
value
The join columns that map the relationship.
|
| Modifier and Type | Optional Element and Description |
|---|---|
ForeignKey |
foreignKey
(Optional) Used to specify or control the generation of a
foreign key constraint when table generation is in effect.
|
public abstract JoinColumn[] value
public abstract ForeignKey foreignKey
foreignKey element
of any of the JoinColumn elements are specified,
the behavior is undefined. If no foreign key annotation element
is specified in either location, the persistence provider's
default foreign key strategy will apply.