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@Target(value=TYPE) @Retention(value=RUNTIME) public @interface SecondaryTable
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 { ... }
- Since:
- Java Persistence 1.0
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Required Element Summary
Required Elements Modifier and Type Required Element and Description String
name
(Required) The name of the table.
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Optional Element Summary
Optional Elements Modifier and Type Optional Element and 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 thepkJoinColumns
element when table generation is in effect.Index[]
indexes
(Optional) Indexes for the table.PrimaryKeyJoinColumn[]
pkJoinColumns
(Optional) The columns that are used to join with the primary table.String
schema
(Optional) The schema of the table.UniqueConstraint[]
uniqueConstraints
(Optional) Unique constraints that are to be placed on the table.
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Element Detail
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name
public abstract String name
(Required) The name of the table.
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-
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catalog
public abstract String catalog
(Optional) The catalog of the table.Defaults to the default catalog.
- Default:
- ""
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-
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schema
public abstract String schema
(Optional) The schema of the table.Defaults to the default schema for user.
- Default:
- ""
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pkJoinColumns
public abstract 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:
- {}
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foreignKey
public abstract ForeignKey foreignKey
(Optional) Used to specify or control the generation of a foreign key constraint for the columns corresponding to thepkJoinColumns
element when table generation is in effect. If both this element and theforeignKey
element of any of thepkJoinColumns
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)
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uniqueConstraints
public abstract 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 theColumn
andJoinColumn
annotations and constraints entailed by primary key mappings.Defaults to no additional constraints.
- Default:
- {}
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indexes
public abstract Index[] indexes
(Optional) Indexes for the table. These are only used if table generation is in effect.- Since:
- Java Persistence 2.1
- Default:
- {}
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Document créé le 19/04/2008, dernière modification le 18/08/2025
Source du document imprimé : https://www.gaudry.be/java-api-javaee-rf-javax/persistence/SecondaryTable.html
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