javax.persistence
Annotation Type SequenceGenerator


@Target(value={TYPE,METHOD,FIELD})
@Retention(value=RUNTIME)
public @interface SequenceGenerator

This annotation defines a primary key generator that may be referenced by name when a generator element is specified for the GeneratedValue annotation. A sequence 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).

Author:
Emmanuel Bernard

Required Element Summary
 String name
          A unique generator name that can be referenced by one or more classes to be the generator for primary key values
 
Optional Element Summary
 int allocationSize
          The amount to increment by when allocating sequence numbers from the sequence
 int initialValue
          The value from which the sequence object is to start generating
 String sequenceName
          The name of the database sequence object from which to obtain primary key values Defaults to a provider-chosen value
 

Element Detail

name

public abstract String name
A unique generator name that can be referenced by one or more classes to be the generator for primary key values

sequenceName

public abstract String sequenceName
The name of the database sequence object from which to obtain primary key values Defaults to a provider-chosen value

Default:
""

initialValue

public abstract int initialValue
The value from which the sequence object is to start generating

Default:
1

allocationSize

public abstract int allocationSize
The amount to increment by when allocating sequence numbers from the sequence

Default:
50