org.hibernate.cache.jbc2.entity
Class OptimisticReadOnlyAccess

java.lang.Object
  org.hibernate.cache.jbc2.entity.TransactionalAccess
      org.hibernate.cache.jbc2.entity.OptimisticTransactionalAccess
          org.hibernate.cache.jbc2.entity.OptimisticReadOnlyAccess

All Implemented Interfaces:

EntityRegionAccessStrategy

public class OptimisticReadOnlyAccess
extends OptimisticTransactionalAccess

This defines the strategy for read-only access to enity data in an optimistic-locking JBossCache using its 2.x APIs

The read-only access to a JBossCache really is still transactional, just with the extra semantic or guarantee that we will not update data.

Author:

Brian Stansberry

Field Summary

Fields inherited from class org.hibernate.cache.jbc2.entity.TransactionalAccess

region

Constructor Summary

OptimisticReadOnlyAccess(EntityRegionImpl region)

Method Summary

boolean	afterUpdate(Object key, Object value, Object currentVersion, Object previousVersion, SoftLock lock)
SoftLock	lockItem(Object key, Object version)
SoftLock	lockRegion()
void	unlockItem(Object key, SoftLock lock)
void	unlockRegion(SoftLock lock)
boolean	update(Object key, Object value, Object currentVersion, Object previousVersion)

Methods inherited from class org.hibernate.cache.jbc2.entity.TransactionalAccess

afterInsert, evict, evictAll, get, getRegion, insert, putFromLoad, putFromLoad, remove, removeAll

Methods inherited from class java.lang.Object

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

Constructor Detail

OptimisticReadOnlyAccess

public OptimisticReadOnlyAccess(EntityRegionImpl region)

Method Detail

lockItem

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

Specified by:

lockItem in interface EntityRegionAccessStrategy

Overrides:

lockItem in class TransactionalAccess

Throws:

CacheException

lockRegion

public SoftLock lockRegion()
                    throws CacheException

Specified by:

lockRegion in interface EntityRegionAccessStrategy

Overrides:

lockRegion in class TransactionalAccess

Throws:

CacheException

unlockItem

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

Specified by:

unlockItem in interface EntityRegionAccessStrategy

Overrides:

unlockItem in class TransactionalAccess

Throws:

CacheException

unlockRegion

public void unlockRegion(SoftLock lock)
                  throws CacheException

Specified by:

unlockRegion in interface EntityRegionAccessStrategy

Overrides:

unlockRegion in class TransactionalAccess

Throws:

CacheException

update

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

Specified by:

update in interface EntityRegionAccessStrategy

Overrides:

update in class TransactionalAccess

Throws:

CacheException

afterUpdate

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

Specified by:

afterUpdate in interface EntityRegionAccessStrategy

Overrides:

afterUpdate in class TransactionalAccess

Throws:

CacheException