net.sf.ehcache.transaction.xa.commands
Class AbstractStoreCommand

java.lang.Object
  net.sf.ehcache.transaction.xa.commands.AbstractStoreCommand

All Implemented Interfaces:

Command

Direct Known Subclasses:

StorePutCommand, StoreRemoveCommand

public abstract class AbstractStoreCommand
extends Object
implements Command

Author:

Ludovic Orban

Constructor Summary

AbstractStoreCommand(Element oldElement, Element newElement)
Create a Store Command

Method Summary

protected Element	getNewElement() Get the new element to put in the underlying store
protected Element	getOldElement() Get the element in the underlying store at the time this command is created
boolean	prepare(Store store, SoftLockManager softLockManager, XidTransactionID transactionId, ElementValueComparator comparator) Prepare the commmand un the underlying store
void	rollback(Store store, SoftLockManager softLockManager) Rollback the prepared change

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sf.ehcache.transaction.xa.commands.Command

getObjectKey, isPut, isRemove

Constructor Detail

AbstractStoreCommand

public AbstractStoreCommand(Element oldElement,
                            Element newElement)

Create a Store Command

Parameters:

oldElement - the element in the underlying store at the time this command is created

newElement - the new element to put in the underlying store

Method Detail

getOldElement

protected Element getOldElement()

Get the element in the underlying store at the time this command is created

Returns:

the old element

getNewElement

protected Element getNewElement()

Get the new element to put in the underlying store

Returns:

the new element to put in the underlying store

prepare

public boolean prepare(Store store,
                       SoftLockManager softLockManager,
                       XidTransactionID transactionId,
                       ElementValueComparator comparator)

Prepare the commmand un the underlying store

Specified by:

prepare in interface Command

Parameters:

store - the underdyling store

softLockManager - the soft lock manager

transactionId - the transaction ID

comparator - the element value comparator

Returns:

true if prepare updated the store, false otherwise

rollback

public void rollback(Store store,
                     SoftLockManager softLockManager)

Rollback the prepared change

Specified by:

rollback in interface Command

Parameters:

store - the underlying store

softLockManager - the soft lock manager