Jakarta Persistence (JPA) Annotation Type

jakarta.persistence.SecondaryTable

Implemented Interfaces:
Annotation
Target:
Type
Specifies a secondary table for the annotated entity class. Specifying one or more secondary tables indicates that the data for the entity class is stored across multiple tables.

If no SecondaryTable annotation is specified, it is assumed that all persistent fields or properties of the entity are mapped to the primary table. If no primary key join columns are specified, the join columns are assumed to reference the primary key columns of the primary table, and have the same names and types as the referenced primary key columns of the primary table.

Example 1: Single secondary table with a single primary key column. 

 @Entity
 @Table(name = "CUSTOMER")
 @SecondaryTable(name = "CUST_DETAIL",
                 pkJoinColumns = @PrimaryKeyJoinColumn(name = "CUST_ID"))
 public class Customer { ... }

Example 2: Single secondary table with multiple primary key columns. 

 @Entity
 @Table(name = "CUSTOMER")
 @SecondaryTable(name = "CUST_DETAIL",
                 pkJoinColumns = {
                     @PrimaryKeyJoinColumn(name = "CUST_ID"),
                     @PrimaryKeyJoinColumn(name = "CUST_TYPE")})
 public class Customer { ... }

This annotation may not be applied to a class annotated MappedSuperclass or Embeddable.

Since:
Jakarta Persistence (JPA) 1.0

Annotation Elements

String name
(Required) The name of the table.
Since:
Jakarta Persistence (JPA) 1.0
String catalog
(Optional) The catalog of the table.

Defaults to the default catalog.

Default:
""
Since:
Jakarta Persistence (JPA) 1.0
String schema
(Optional) The schema of the table.

Defaults to the default schema for user.

Default:
""
Since:
Jakarta Persistence (JPA) 1.0
PrimaryKeyJoinColumn[] pkJoinColumns
(Optional) The columns that are used to join with the primary table.

Defaults to the column(s) of the same name(s) as the primary key column(s) in the primary table.

Default:
{}
Since:
Jakarta Persistence (JPA) 1.0
ForeignKey foreignKey
(Optional) Used to specify or control the generation of a foreign key constraint for the columns corresponding to the pkJoinColumns element when table generation is in effect.
If both this element and the #foreignKey element of any of the pkJoinColumns elements are specified, the behavior is undefined. If no foreign key annotation element is specified in either location, a default foreign key strategy is selected by the persistence provider.
Default:
@ForeignKey(ConstraintMode.PROVIDER_DEFAULT)
Since:
Jakarta Persistence (JPA) 2.1
UniqueConstraint[] uniqueConstraints
(Optional) Unique constraints that are to be placed on the table.
These are typically only used if table generation is in effect. These constraints apply in addition to any constraints specified by Column and JoinColumn annotations and constraints entailed by primary key mappings.

Defaults to no additional constraints.

Default:
{}
Since:
Jakarta Persistence (JPA) 1.0
Index[] indexes
(Optional) Indexes for the table.
These are only used if table generation is in effect.
Default:
{}
Since:
Jakarta Persistence (JPA) 2.1
CheckConstraint[] check
(Optional) Check constraints to be applied to the table.
These are only used if table generation is in effect.
Default:
{}
Since:
Jakarta Persistence (JPA) 3.2
String comment
(Optional) A comment to be applied to the table.
This is only used if table generation is in effect.
Default:
""
Since:
Jakarta Persistence (JPA) 3.2
String options
(Optional) A SQL fragment appended to the generated DDL statement which creates this table.
This is only used if table generation is in effect.
Default:
""
Since:
Jakarta Persistence (JPA) 3.2

Additional JDK methods inherited from java.lang.annotation.Annotation

annotationType(), equals(Object), hashCode(), toString()