javax.persistence

Annotation Type PrimaryKeyJoinColumns

Contents

  • @Target(value={TYPE,METHOD,FIELD})
 @Retention(value=RUNTIME)
public @interface PrimaryKeyJoinColumns
    Groups PrimaryKeyJoinColumn annotations. It is used to map composite foreign keys. 
        Example: ValuedCustomer subclass

    @Entity
    @Table(name="VCUST")
    @DiscriminatorValue("VCUST")
    @PrimaryKeyJoinColumns({
        @PrimaryKeyJoinColumn(name="CUST_ID", 
            referencedColumnName="ID"),
        @PrimaryKeyJoinColumn(name="CUST_TYPE",
            referencedColumnName="TYPE")
    })
    public class ValuedCustomer extends Customer { ... }
    Since:
    Java Persistence 1.0
    See Also:
    ForeignKey

    • Element Detail

      • value

        public abstract PrimaryKeyJoinColumn[] value
        One or more PrimaryKeyJoinColumn annotations.

      • 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 PrimaryKeyJoinColumn 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:
        Java Persistence 2.1
        Default:
        @javax.persistence.ForeignKey(javax.persistence.ConstraintMode.PROVIDER_DEFAULT)

Document created the 11/06/2005, last modified the 18/08/2025
Source of the printed document:https://www.gaudry.be/en/java-api-javaee-rf-javax/persistence/PrimaryKeyJoinColumns.html

The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.

References

  1. View the html document Language of the document:fr Manuel PHP : https://docs.oracle.com, PrimaryKeyJoinColumns (Java(TM) EE 7 Specification APIs)

These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author of this site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.