JPA Enum

GenerationType

java.lang.Object
  ∟ java.lang.Enum<javax.persistence.GenerationType>
    ∟ javax.persistence.GenerationType
Defines the types of primary key generation strategies.
See Also:
GeneratedValue
Since:
JPA 1.0
The Auto Generated Values article explains how to use GenerationType.

Enum Constants

AUTO
Indicates that the persistence provider should pick an appropriate strategy for the particular database.
The AUTO generation strategy may expect a database resource to exist, or it may attempt to create one. A vendor may provide documentation on how to create such resources in the event that it does not support schema generation or cannot create the schema resource at runtime.
Since:
JPA 1.0
IDENTITY
Indicates that the persistence provider must assign primary keys for the entity using a database identity column.
Since:
JPA 1.0
SEQUENCE
Indicates that the persistence provider must assign primary keys for the entity using a database sequence.
Since:
JPA 1.0
TABLE
Indicates that the persistence provider must assign primary keys for the entity using an underlying database table to ensure uniqueness.
Since:
JPA 1.0

Public Static Enum Methods:

GenerationType[] values()
Returns an array containing the constants of this enum type, in the order they are declared.
This method may be used to iterate over the constants as follows: 
      for (GenerationType c : GenerationType.values())
        System.out.println(c);
Return:
an array containing the constants of this enum type, in the order they are declared
GenerationType valueOf(String name)
Returns the enum constant of this type with the specified name.
The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
Parameters:
name - the name of the enum constant to be returned.
Return:
the enum constant with the specified name
Throws:
IllegalArgumentException - if this enum type has no constant with the specified name
NullPointerException - if the argument is null

Method inherited from class java.lang.Enum

compareTo, compareTo, describeConstable, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Method inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait