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oracle.toplink.descriptors
Class TimestampLockingPolicy

java.lang.Object
oracle.toplink.descriptors.VersionLockingPolicy
oracle.toplink.descriptors.TimestampLockingPolicy

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, oracle.toplink.internal.descriptors.OptimisticLockingPolicy

public class TimestampLockingPolicy

extends VersionLockingPolicy

Purpose: Used to allow a single version timestamp to be used for optimistic locking.

Since:

TOPLink/Java 2.0

See Also:

Serialized Form

Field Summary

static int	LOCAL_TIME
static int	SERVER_TIME

Fields inherited from class oracle.toplink.descriptors.VersionLockingPolicy

IN_CACHE, IN_OBJECT

Constructor Summary

TimestampLockingPolicy()
Create a new TimestampLockingPolicy.

TimestampLockingPolicy(java.lang.String fieldName)
Create a new TimestampLockingPolicy.

Method Summary

void	setUsesServerTime(boolean usesServerTime) Set if policy uses server time.
void	useLocalTime() set this policy to get the time from the local machine.
void	useServerTime() set this policy to get the time from the server.
boolean	usesLocalTime() Return true if policy uses local time.
boolean	usesServerTime() Return true if policy uses server time.

Methods inherited from class oracle.toplink.descriptors.VersionLockingPolicy

getWriteLockFieldName, isCascaded, isStoredInCache, isStoredInObject, setIsCascaded, setIsStoredInCache, setWriteLockField, setWriteLockFieldName, storeInCache, storeInObject

Methods inherited from class java.lang.Object

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

Field Detail

SERVER_TIME

public static final int SERVER_TIME

See Also:

Constant Field Values

LOCAL_TIME

public static final int LOCAL_TIME

See Also:

Constant Field Values

Constructor Detail

TimestampLockingPolicy

public TimestampLockingPolicy()

Create a new TimestampLockingPolicy. Defaults to using the time retrieved from the server.

TimestampLockingPolicy

public TimestampLockingPolicy(java.lang.String fieldName)

Create a new TimestampLockingPolicy. Defaults to using the time retrieved from the server.

Parameters:

fieldName - the field where the write lock value will be stored.

Method Detail

setUsesServerTime

public void setUsesServerTime(boolean usesServerTime)

Set if policy uses server time.

useLocalTime

public void useLocalTime()

set this policy to get the time from the local machine.

useServerTime

public void useServerTime()

set this policy to get the time from the server.

usesLocalTime

public boolean usesLocalTime()

Return true if policy uses local time.

usesServerTime

public boolean usesServerTime()

Return true if policy uses server time.

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