javax.persistence
Enum PessimisticLockScope

java.lang.Object
  java.lang.Enum<PessimisticLockScope>
      javax.persistence.PessimisticLockScope

All Implemented Interfaces:

Serializable, Comparable<PessimisticLockScope>

public enum PessimisticLockScope
extends Enum<PessimisticLockScope>

Defines the values of the javax.persistence.lock.scope property for pessimistic locking. This property may be passed as an argument to the methods of the EntityManager, Query, and TypedQuery interfaces that allow lock modes to be specified or used with the NamedQuery annotation.

Since:

JPA 2.0 version.

Author:

Florent Benoit

See Also:

JPA 2.0 specification

Enum Constant Summary

EXTENDED
In addition to the behavior for PessimisticLockScope.NORMAL, element collections and relationships owned by the entity that are contained in join tables will be locked if the javax.persistence.lock.scope property is specified with a value of PessimisticLockScope.EXTENDED.

NORMAL
This value defines the default behavior for pessimistic locking.

Method Summary

static PessimisticLockScope	valueOf(String name) Returns the enum constant of this type with the specified name.
static PessimisticLockScope[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

NORMAL

public static final PessimisticLockScope NORMAL

This value defines the default behavior for pessimistic locking.

EXTENDED

public static final PessimisticLockScope EXTENDED

In addition to the behavior for PessimisticLockScope.NORMAL, element collections and relationships owned by the entity that are contained in join tables will be locked if the javax.persistence.lock.scope property is specified with a value of PessimisticLockScope.EXTENDED.

Method Detail

values

public static PessimisticLockScope[] 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 (PessimisticLockScope c : PessimisticLockScope.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static PessimisticLockScope 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.

Returns:

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