@Target(value={TYPE,METHOD,FIELD}) @Retention(value=RUNTIME) public @interface TableGenerator
GeneratedValue
annotation. A table generator may be specified on the entity class or on the
primary key field or property. The scope of the generator name is global to the persistence unit (across
all generator types).
Example 1: @Entity public class Employee { ... @TableGenerator( name="empGen", table="ID_GEN", pkColumnName="GEN_KEY", valueColumnName="GEN_VALUE", pkColumnValue="EMP_ID", allocationSize=1) @Id @GeneratedValue(strategy=TABLE, generator="empGen") int id; ... } Example 2: @Entity public class Address { ... @TableGenerator( name="addressGen", table="ID_GEN", pkColumnName="GEN_KEY", valueColumnName="GEN_VALUE", pkColumnValue="ADDR_ID") @Id @GeneratedValue(strategy=TABLE, generator="addressGen") int id; ... }
GeneratedValue
Modifier and Type | Required Element and Description |
---|---|
String |
name
(Required) A unique generator name that can be referenced by one or more classes to be the generator
for id values.
|
Modifier and Type | Optional Element and Description |
---|---|
int |
allocationSize
(Optional) The amount to increment by when allocating id numbers from the generator.
|
String |
catalog
(Optional) The catalog of the table.
|
Index[] |
indexes
(Optional) Indexes for the table.
|
int |
initialValue
(Optional) The initial value to be used to initialize the column that stores the last value generated.
|
String |
pkColumnName
(Optional) Name of the primary key column in the table.
|
String |
pkColumnValue
(Optional) The primary key value in the generator table that distinguishes this set of generated values
from others that may be stored in the table.
|
String |
schema
(Optional) The schema of the table.
|
String |
table
(Optional) Name of table that stores the generated id values.
|
UniqueConstraint[] |
uniqueConstraints
(Optional) Unique constraints that are to be placed on the table.
|
String |
valueColumnName
(Optional) Name of the column that stores the last value generated.
|
public abstract String name
public abstract String table
public abstract String catalog
public abstract String schema
public abstract String pkColumnName
public abstract String valueColumnName
public abstract String pkColumnValue
public abstract int initialValue
public abstract int allocationSize
public abstract UniqueConstraint[] uniqueConstraints
public abstract Index[] indexes
Copyright © 2016. All rights reserved.