JoinColumns

@Target(value={METHOD,FIELD})
 @Retention(value=RUNTIME)
public @interface JoinColumns

Specifies the mapping for composite foreign keys. This annotation groups 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; }

Since:: 1.0
See Also:: JoinColumn, ForeignKey

Required Element Summary

Required Elements
Modifier and Type Required Element and Description

JoinColumn[] value
The join columns that map the relationship.

Required Elements
Modifier and Type	Required Element and Description
`JoinColumn[]`	`value` The join columns that map the relationship.

Optional Element Summary

Optional Elements
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.

- Element Detail
  - value
```
public abstract JoinColumn[] value
```
    The join columns that map the relationship.
- - foreignKey
```
public abstract ForeignKey foreignKey
```
    (Optional) Used to specify or control the generation of a foreign key constraint when table generation is in effect. If both this element and the 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.
    
    Since:
    
    2.1
    
    Default:
    
    @jakarta.persistence.ForeignKey(jakarta.persistence.ConstraintMode.PROVIDER_DEFAULT)

Annotation Type JoinColumns

Required Element Summary

Optional Element Summary

Element Detail

value

foreignKey