org.datanucleus.state

Enum LockMode

java.lang.Object

java.lang.Enum<LockMode>

org.datanucleus.state.LockMode

All Implemented Interfaces:

Serializable, Comparable<LockMode>

public enum LockMode
extends Enum<LockMode>

Locking modes for persistable objects.

Enum Constant Summary

Enum Constants

Enum Constant and Description
LOCK_NONE No locking specified.
LOCK_OPTIMISTIC_READ Optimistic locking.
LOCK_OPTIMISTIC_WRITE Optimistic locking, plus forced version update at commit.
LOCK_PESSIMISTIC_READ Pessimistic locking.
LOCK_PESSIMISTIC_WRITE Pessimistic locking, plus forced version update at commit.

Method Summary

Modifier and Type	Method and Description
static LockMode	valueOf(String name) Returns the enum constant of this type with the specified name.
static LockMode[]	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

LOCK_NONE

public static final LockMode LOCK_NONE

No locking specified. Use default type.

LOCK_OPTIMISTIC_READ

public static final LockMode LOCK_OPTIMISTIC_READ

Optimistic locking.

LOCK_OPTIMISTIC_WRITE

public static final LockMode LOCK_OPTIMISTIC_WRITE

Optimistic locking, plus forced version update at commit.

LOCK_PESSIMISTIC_READ

public static final LockMode LOCK_PESSIMISTIC_READ

Pessimistic locking.

LOCK_PESSIMISTIC_WRITE

public static final LockMode LOCK_PESSIMISTIC_WRITE

Pessimistic locking, plus forced version update at commit.

Method Detail

values

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

Returns:

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

valueOf

public static LockMode 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