org.hibernate.cache.ehcache.internal.nonstop

Class NonstopAwareNaturalIdRegionAccessStrategy

java.lang.Object

org.hibernate.cache.ehcache.internal.nonstop.NonstopAwareNaturalIdRegionAccessStrategy

All Implemented Interfaces:

NaturalIdRegionAccessStrategy, RegionAccessStrategy

public class NonstopAwareNaturalIdRegionAccessStrategy
extends Object
implements NaturalIdRegionAccessStrategy

Implementation of NaturalIdRegionAccessStrategy that handles NonStopCacheException using HibernateNonstopCacheExceptionHandler

Constructor Summary

Constructors

Constructor and Description
NonstopAwareNaturalIdRegionAccessStrategy(NaturalIdRegionAccessStrategy actualStrategy, HibernateNonstopCacheExceptionHandler hibernateNonstopExceptionHandler) Constructor accepting the actual NaturalIdRegionAccessStrategy and the HibernateNonstopCacheExceptionHandler

Method Summary

Methods

Modifier and Type	Method and Description
boolean	afterInsert(Object key, Object value) Called after an item has been inserted (after the transaction completes), instead of calling release().
boolean	afterUpdate(Object key, Object value, SoftLock lock) Called after an item has been updated (after the transaction completes), instead of calling release().
void	evict(Object key) Forcibly evict an item from the cache immediately without regard for transaction isolation.
void	evictAll() Forcibly evict all items from the cache immediately without regard for transaction isolation.
Object	get(Object key, long txTimestamp) Attempt to retrieve an object from the cache.
NaturalIdRegion	getRegion() Get the wrapped naturalId cache region
boolean	insert(Object key, Object value) Called after an item has been inserted (before the transaction completes), instead of calling evict().
SoftLock	lockItem(Object key, Object version) We are going to attempt to update/delete the keyed object.
SoftLock	lockRegion() Lock the entire region
boolean	putFromLoad(Object key, Object value, long txTimestamp, Object version) Attempt to cache an object, after loading from the database.
boolean	putFromLoad(Object key, Object value, long txTimestamp, Object version, boolean minimalPutOverride) Attempt to cache an object, after loading from the database, explicitly specifying the minimalPut behavior.
void	remove(Object key) Called after an item has become stale (before the transaction completes).
void	removeAll() Called to evict data from the entire region
void	unlockItem(Object key, SoftLock lock) Called when we have finished the attempted update/delete (which may or may not have been successful), after transaction completion.
void	unlockRegion(SoftLock lock) Called after we have finished the attempted invalidation of the entire region
boolean	update(Object key, Object value) Called after an item has been updated (before the transaction completes), instead of calling evict().

Methods inherited from class java.lang.Object

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

Constructor Detail

NonstopAwareNaturalIdRegionAccessStrategy

public NonstopAwareNaturalIdRegionAccessStrategy(NaturalIdRegionAccessStrategy actualStrategy,
                                         HibernateNonstopCacheExceptionHandler hibernateNonstopExceptionHandler)

Constructor accepting the actual NaturalIdRegionAccessStrategy and the HibernateNonstopCacheExceptionHandler

Parameters:

actualStrategy - The wrapped NaturalIdRegionAccessStrategy

hibernateNonstopExceptionHandler - The exception handler

Method Detail

insert

public boolean insert(Object key,
             Object value)
               throws CacheException

Description copied from interface: NaturalIdRegionAccessStrategy

Called after an item has been inserted (before the transaction completes), instead of calling evict(). This method is used by "synchronous" concurrency strategies.

Specified by:

insert in interface NaturalIdRegionAccessStrategy

Parameters:

key - The item key

value - The item

Returns:

Were the contents of the cache actual changed by this operation?

Throws:

CacheException - Propogated from underlying Region

afterInsert

public boolean afterInsert(Object key,
                  Object value)
                    throws CacheException

Description copied from interface: NaturalIdRegionAccessStrategy

Called after an item has been inserted (after the transaction completes), instead of calling release(). This method is used by "asynchronous" concurrency strategies.

Specified by:

afterInsert in interface NaturalIdRegionAccessStrategy

Parameters:

key - The item key

value - The item

Returns:

Were the contents of the cache actual changed by this operation?

Throws:

CacheException - Propogated from underlying Region

update

public boolean update(Object key,
             Object value)
               throws CacheException

Description copied from interface: NaturalIdRegionAccessStrategy

Called after an item has been updated (before the transaction completes), instead of calling evict(). This method is used by "synchronous" concurrency strategies.

Specified by:

update in interface NaturalIdRegionAccessStrategy

Parameters:

key - The item key

value - The item

Returns:

Were the contents of the cache actual changed by this operation?

Throws:

CacheException - Propogated from underlying Region

afterUpdate

public boolean afterUpdate(Object key,
                  Object value,
                  SoftLock lock)
                    throws CacheException

Description copied from interface: NaturalIdRegionAccessStrategy

Called after an item has been updated (after the transaction completes), instead of calling release(). This method is used by "asynchronous" concurrency strategies.

Specified by:

afterUpdate in interface NaturalIdRegionAccessStrategy

Parameters:

key - The item key

value - The item

lock - The lock previously obtained from RegionAccessStrategy.lockItem(java.lang.Object, java.lang.Object)

Returns:

Were the contents of the cache actual changed by this operation?

Throws:

CacheException - Propogated from underlying Region

getRegion

public NaturalIdRegion getRegion()

Description copied from interface: NaturalIdRegionAccessStrategy

Get the wrapped naturalId cache region

Specified by:

getRegion in interface NaturalIdRegionAccessStrategy

Returns:

The underlying region

evict

public void evict(Object key)
           throws CacheException

Description copied from interface: RegionAccessStrategy

Forcibly evict an item from the cache immediately without regard for transaction isolation.

Specified by:

evict in interface RegionAccessStrategy

Parameters:

key - The key of the item to remove

Throws:

CacheException - Propogated from underlying Region

evictAll

public void evictAll()
              throws CacheException

Description copied from interface: RegionAccessStrategy

Forcibly evict all items from the cache immediately without regard for transaction isolation.

Specified by:

evictAll in interface RegionAccessStrategy

Throws:

CacheException - Propogated from underlying Region

get

public Object get(Object key,
         long txTimestamp)
           throws CacheException

Description copied from interface: RegionAccessStrategy

Attempt to retrieve an object from the cache. Mainly used in attempting to resolve entities/collections from the second level cache.

Specified by:

get in interface RegionAccessStrategy

Parameters:

key - The key of the item to be retrieved.

txTimestamp - a timestamp prior to the transaction start time

Returns:

the cached object or null

Throws:

CacheException - Propogated from underlying Region

lockItem

public SoftLock lockItem(Object key,
                Object version)
                  throws CacheException

Description copied from interface: RegionAccessStrategy

We are going to attempt to update/delete the keyed object. This method is used by "asynchronous" concurrency strategies.

The returned object must be passed back to RegionAccessStrategy.unlockItem(java.lang.Object, org.hibernate.cache.spi.access.SoftLock), to release the lock. Concurrency strategies which do not support client-visible locks may silently return null.

Specified by:

lockItem in interface RegionAccessStrategy

Parameters:

key - The key of the item to lock

version - The item's current version value

Returns:

A representation of our lock on the item; or null.

Throws:

CacheException - Propogated from underlying Region

lockRegion

public SoftLock lockRegion()
                    throws CacheException

Description copied from interface: RegionAccessStrategy

Lock the entire region

Specified by:

lockRegion in interface RegionAccessStrategy

Returns:

A representation of our lock on the item; or null.

Throws:

CacheException - Propogated from underlying Region

putFromLoad

public boolean putFromLoad(Object key,
                  Object value,
                  long txTimestamp,
                  Object version,
                  boolean minimalPutOverride)
                    throws CacheException

Description copied from interface: RegionAccessStrategy

Attempt to cache an object, after loading from the database, explicitly specifying the minimalPut behavior.

Specified by:

putFromLoad in interface RegionAccessStrategy

Parameters:

key - The item key

value - The item

txTimestamp - a timestamp prior to the transaction start time

version - the item version number

minimalPutOverride - Explicit minimalPut flag

Returns:

true if the object was successfully cached

Throws:

CacheException - Propogated from underlying Region

putFromLoad

public boolean putFromLoad(Object key,
                  Object value,
                  long txTimestamp,
                  Object version)
                    throws CacheException

Description copied from interface: RegionAccessStrategy

Attempt to cache an object, after loading from the database.

Specified by:

putFromLoad in interface RegionAccessStrategy

Parameters:

key - The item key

value - The item

txTimestamp - a timestamp prior to the transaction start time

version - the item version number

Returns:

true if the object was successfully cached

Throws:

CacheException - Propogated from underlying Region

remove

public void remove(Object key)
            throws CacheException

Description copied from interface: RegionAccessStrategy

Called after an item has become stale (before the transaction completes). This method is used by "synchronous" concurrency strategies.

Specified by:

remove in interface RegionAccessStrategy

Parameters:

key - The key of the item to remove

Throws:

CacheException - Propogated from underlying Region

removeAll

public void removeAll()
               throws CacheException

Description copied from interface: RegionAccessStrategy

Called to evict data from the entire region

Specified by:

removeAll in interface RegionAccessStrategy

Throws:

CacheException - Propogated from underlying Region

unlockItem

public void unlockItem(Object key,
              SoftLock lock)
                throws CacheException

Description copied from interface: RegionAccessStrategy

Called when we have finished the attempted update/delete (which may or may not have been successful), after transaction completion. This method is used by "asynchronous" concurrency strategies.

Specified by:

unlockItem in interface RegionAccessStrategy

Parameters:

key - The item key

lock - The lock previously obtained from RegionAccessStrategy.lockItem(java.lang.Object, java.lang.Object)

Throws:

CacheException - Propogated from underlying Region

unlockRegion

public void unlockRegion(SoftLock lock)
                  throws CacheException

Description copied from interface: RegionAccessStrategy

Called after we have finished the attempted invalidation of the entire region

Specified by:

unlockRegion in interface RegionAccessStrategy

Parameters:

lock - The lock previously obtained from RegionAccessStrategy.lockRegion()

Throws:

CacheException - Propogated from underlying Region