Module persistence.api
Package javax.persistence

Annotation Type JoinTable

@Target(FIELD) @Retention(RUNTIME) public @interface JoinTable
Used in the mapping of associations. It is specified on the owning side of an association.

A join table is typically used in the mapping of many-to-many and unidirectional one-to-many associations. It may also be used to map bidirectional many-to-one/one-to-many associations, unidirectional many-to-one relationships, and one-to-one associations (both bidirectional and unidirectional).

When a join table is used in mapping a relationship with an embeddable class on the owning side of the relationship, the containing entity rather than the embeddable class is considered the owner of the relationship.

If the JoinTable annotation is missing, the default values of the annotation elements apply. The name of the join table is assumed to be the table names of the associated primary tables concatenated together (owning side first) using an underscore. 


    Example:

    @JoinTable(
        name="CUST_PHONE",
        joinColumns=
            @JoinColumn(name="CUST_ID", referencedColumnName="ID"),
        inverseJoinColumns=
            @JoinColumn(name="PHONE_ID", referencedColumnName="ID")
    )
Since:
Java Persistence 1.0
See Also:

  • Optional Element Summary

    Optional Elements
    Modifier and Type
    Optional Element
    Description
    String
    catalog
    (Optional) The catalog of the table.
    ForeignKey
    foreignKey
    (Optional) Used to specify or control the generation of a foreign key constraint for the columns corresponding to the joinColumns element when table generation is in effect.
    Index[]
    indexes
    (Optional) Indexes for the table.
    ForeignKey
    inverseForeignKey
    (Optional) Used to specify or control the generation of a foreign key constraint for the columns corresponding to the inverseJoinColumns element when table generation is in effect.
    JoinColumn[]
    inverseJoinColumns
    (Optional) The foreign key columns of the join table which reference the primary table of the entity that does not own the association.
    JoinColumn[]
    joinColumns
    (Optional) The foreign key columns of the join table which reference the primary table of the entity owning the association.
    String
    name
    (Optional) The name of the join table.
    String
    schema
    (Optional) The schema of the table.
    UniqueConstraint[]
    uniqueConstraints
    (Optional) Unique constraints that are to be placed on the table.

  • Element Details

    • name

      String name
      (Optional) The name of the join table. Defaults to the concatenated names of the two associated primary entity tables, separated by an underscore.
      Returns:
      The name
      Default:
      ""

    • catalog

      String catalog
      (Optional) The catalog of the table. Defaults to the default catalog.
      Returns:
      The catalog
      Default:
      ""

    • schema

      String schema
      (Optional) The schema of the table. Defaults to the default schema for user.
      Returns:
      The schema
      Default:
      ""

    • joinColumns

      JoinColumn[] joinColumns
      (Optional) The foreign key columns of the join table which reference the primary table of the entity owning the association. (I.e. the owning side of the association). Uses the same defaults as for JoinColumn.
      Returns:
      The join columns
      Default:
      {}

    • inverseJoinColumns

      JoinColumn[] inverseJoinColumns
      (Optional) The foreign key columns of the join table which reference the primary table of the entity that does not own the association. (I.e. the inverse side of the association). Uses the same defaults as for JoinColumn.
      Returns:
      The inverse join cols
      Default:
      {}

    • uniqueConstraints

      UniqueConstraint[] uniqueConstraints
      (Optional) Unique constraints that are to be placed on the table. These are only used if table generation is in effect. Defaults to no additional constraints.
      Returns:
      The unique constraints
      Default:
      {}

    • indexes

      Index[] indexes
      (Optional) Indexes for the table. These are only used if table generation is in effect.
      Returns:
      The indexes
      Default:
      {}

    • foreignKey

      ForeignKey foreignKey
      (Optional) Used to specify or control the generation of a foreign key constraint for the columns corresponding to the joinColumns element when table generation is in effect.
      Returns:
      The foreign key
      Since:
      Java Persistence 2.1
      Default:
      @javax.persistence.ForeignKey(PROVIDER_DEFAULT)

    • inverseForeignKey

      ForeignKey inverseForeignKey
      (Optional) Used to specify or control the generation of a foreign key constraint for the columns corresponding to the inverseJoinColumns element when table generation is in effect.
      Returns:
      The inverse fk
      Since:
      Java Persistence 2.1
      Default:
      @javax.persistence.ForeignKey(PROVIDER_DEFAULT)