UpdateTimestampsCache (Hibernate Core Aggregator 3.6.10.Final API)

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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.

Author:

Gavin King, Mikheil Kapanadze

Field Summary

Fields
Modifier and Type Field and Description

static String REGION_NAME

Constructor Summary

Constructors
Constructor and Description

UpdateTimestampsCache(Settings settings, Properties props)

Method Summary

Methods
Modifier and Type	Method and 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 Detail
- REGION_NAME
```
public static final String REGION_NAME
```

Constructor Detail

UpdateTimestampsCache

public UpdateTimestampsCache(Settings settings,
                     Properties props)
                      throws HibernateException

Throws:: HibernateException

Method Detail

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

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