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 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) 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 cacheName)

Create a new ReadCommittedSoftLockFactoryImpl instance for a cache

Parameters:

cacheName - the name of the cache

Method Detail

createSoftLock

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

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

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