Package org.hibernate.cache

Class UpdateTimestampsCache

java.lang.Object

org.hibernate.cache.UpdateTimestampsCache

public class UpdateTimestampsCache
extends Object

Tracks the timestamps of the most recent updates to particular tables. It is important that the cache timeout of the underlying cache implementation be set to a higher value than the timeouts of any of the query caches. In fact, we recommend that the the underlying cache not be configured for expiry at all. Note, in particular, that an LRU cache expiry policy is never appropriate.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	REGION_NAME

Constructor Summary

Constructors

Constructor	Description
UpdateTimestampsCache(Settings settings, Properties props)

Method Summary

Modifier and Type	Method	Description
void	clear()
void	destroy()
TimestampsRegion	getRegion()
void	invalidate(Serializable[] spaces)
boolean	isUpToDate(Set spaces, Long timestamp)
void	preinvalidate(Serializable[] spaces)
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

REGION_NAME

public static final String REGION_NAME

Constructor Details

UpdateTimestampsCache

public UpdateTimestampsCache(Settings settings,
 Properties props)
                      throws HibernateException

Throws:

HibernateException

Method Details

preinvalidate

public void preinvalidate(Serializable[] spaces)
                   throws CacheException

Throws:

CacheException

invalidate

public void invalidate(Serializable[] spaces)
                throws CacheException

Throws:

CacheException

isUpToDate

public boolean isUpToDate(Set spaces,
 Long timestamp)
                   throws HibernateException

Throws:

HibernateException

clear

public void clear()
           throws CacheException

Throws:

CacheException

destroy

public void destroy()

getRegion

public TimestampsRegion getRegion()

toString

public String toString()

Overrides:

toString in class Object