net.sf.ehcache.transaction
Class ReadCommittedSoftLockFactoryImpl

java.lang.Object
  net.sf.ehcache.transaction.ReadCommittedSoftLockFactoryImpl

All Implemented Interfaces:

SoftLockFactory

public class ReadCommittedSoftLockFactoryImpl
extends Object
implements SoftLockFactory

A SoftLockFactory implementation which creates soft locks with Read-Committed isolation level

Author:

Ludovic Orban

Constructor Summary

ReadCommittedSoftLockFactoryImpl(String cacheManagerName, String cacheName)
Create a new ReadCommittedSoftLockFactoryImpl instance for a cache

Method Summary

Set<SoftLock>	collectAllSoftLocksForTransactionID(TransactionID transactionID) Get a the soft locks of the specified transaction ID
Set<TransactionID>	collectExpiredTransactionIDs() Get a Set of TransactionIDs for which the soft locks have expired
SoftLock	createSoftLock(TransactionID transactionID, Object key, Element newElement, Element oldElement, boolean pinned) Create a new, unlocked soft lock
Set<Object>	getKeysInvisibleInContext(LocalTransactionContext currentTransactionContext) Get a Set of keys protected by soft locks which must not be visible to a transaction context according to the isolation level.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReadCommittedSoftLockFactoryImpl

public ReadCommittedSoftLockFactoryImpl(String cacheManagerName,
                                        String cacheName)

Create a new ReadCommittedSoftLockFactoryImpl instance for a cache

Parameters:

cacheManagerName - the name of the cache manager

cacheName - the name of the cache

Method Detail

createSoftLock

public SoftLock createSoftLock(TransactionID transactionID,
                               Object key,
                               Element newElement,
                               Element oldElement,
                               boolean pinned)

Create a new, unlocked soft lock

Specified by:

createSoftLock in interface SoftLockFactory

Parameters:

transactionID - the transaction ID under which the soft lock will operate

key - the key of the Element this soft lock is protecting

newElement - the new Element

oldElement - the actual Element

pinned - true if the element that is going to be replaced by a soft lock is pinned

Returns:

the soft lock

getKeysInvisibleInContext

public Set<Object> getKeysInvisibleInContext(LocalTransactionContext currentTransactionContext)

Get a Set of keys protected by soft locks which must not be visible to a transaction context according to the isolation level.

Specified by:

getKeysInvisibleInContext in interface SoftLockFactory

Parameters:

currentTransactionContext - the transaction context

Returns:

a Set of keys invisible to the context

collectExpiredTransactionIDs

public Set<TransactionID> collectExpiredTransactionIDs()

Get a Set of TransactionIDs for which the soft locks have expired

Specified by:

collectExpiredTransactionIDs in interface SoftLockFactory

Returns:

a Set of TransactionIDs for which the soft locks have expired

collectAllSoftLocksForTransactionID

public Set<SoftLock> collectAllSoftLocksForTransactionID(TransactionID transactionID)

Get a the soft locks of the specified transaction ID

Specified by:

collectAllSoftLocksForTransactionID in interface SoftLockFactory

Parameters:

transactionID - the transaction ID

Returns:

a Set of SoftLocks