javax.persistence

Annotation Type SequenceGenerator

Contents

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

   @SequenceGenerator(name="EMP_SEQ", allocationSize=25)
    Since:
    Java Persistence 1.0

    • Element Detail

      • name

        public abstract String name
        (Required) 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
        (Optional) The name of the database sequence object from which to obtain primary key values.

        Defaults to a provider-chosen value.

        Default:
        ""

      • catalog

        public abstract String catalog
        (Optional) The catalog of the sequence generator.
        Since:
        Java Persistence 2.0
        Default:
        ""

      • schema

        public abstract String schema
        (Optional) The schema of the sequence generator.
        Since:
        Java Persistence 2.0
        Default:
        ""

      • initialValue

        public abstract int initialValue
        (Optional) The value from which the sequence object is to start generating.
        Default:
        1

      • allocationSize

        public abstract int allocationSize
        (Optional) The amount to increment by when allocating sequence numbers from the sequence.
        Default:
        50

Document created the 11/06/2005, last modified the 18/08/2025
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References

  1. View the html document Language of the document:fr Manuel PHP : https://docs.oracle.com, SequenceGenerator (Java(TM) EE 7 Specification APIs)

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