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SequenceGenerator.java API Doc Glassfish v2 API 3581 Fri May 04 22:34:08 BST 2007 javax.persistence

SequenceGenerator

public class SequenceGenerator

This annotation defines a primary key generator that may be referenced by name when a generator element is specified for the {@link 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).

Example:

@SequenceGenerator(name="EMP_SEQ", allocationSize=25)

since: Java Persistence 1.0

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