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Java Platform, Enterprise Edition v5.0 API Specifications
JoinColumns (Java EE 5 SDK) - Java Platform, Enterprise Edition v5.0 API Specifications
javax.persistence
Annotation Type JoinColumns
@Target(value={METHOD,FIELD})
@Retention(value=RUNTIME)
public @interface JoinColumns
Defines mapping for the 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:
- Java Persistence 1.0
value
public abstract JoinColumn[] value
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