net.sf.ehcache.transaction
Class TransactionIDFactoryImpl

java.lang.Object
  net.sf.ehcache.transaction.AbstractTransactionIDFactory
      net.sf.ehcache.transaction.TransactionIDFactoryImpl

All Implemented Interfaces:

TransactionIDFactory

public class TransactionIDFactoryImpl
extends AbstractTransactionIDFactory

A TransactionIDFactory implementation with uniqueness across a single JVM

Author:

Ludovic Orban

Constructor Summary

TransactionIDFactoryImpl()

Method Summary

TransactionID	createTransactionID() Create a unique transaction ID
XidTransactionID	createXidTransactionID(Xid xid, Ehcache cache) Create a transaction ID based on a XID for uniqueness
protected ConcurrentMap<TransactionID,Decision>	getTransactionStates() Return the map of transaction states.
boolean	isExpired(TransactionID transactionID) Check if the transaction ID expired, ie: that the transaction died abnormally
Boolean	isPersistent() Return true if the factory state is persistent (survives JVM restart).
TransactionID	restoreTransactionID(TransactionIDSerializedForm serializedForm) Restore a transaction ID from its serialized form
XidTransactionID	restoreXidTransactionID(XidTransactionIDSerializedForm serializedForm) Restore a XID transaction ID from its serialized form

Methods inherited from class net.sf.ehcache.transaction.AbstractTransactionIDFactory

clear, getAllTransactionIDs, getAllXidTransactionIDsFor, isDecisionCommit, markForCommit, markForRollback

Methods inherited from class java.lang.Object

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

Constructor Detail

TransactionIDFactoryImpl

public TransactionIDFactoryImpl()

Method Detail

createTransactionID

public TransactionID createTransactionID()

Create a unique transaction ID

Returns:

a transaction ID

restoreTransactionID

public TransactionID restoreTransactionID(TransactionIDSerializedForm serializedForm)

Restore a transaction ID from its serialized form

Parameters:

serializedForm - the TransactionID serialized form

Returns:

the restored TransactionID

createXidTransactionID

public XidTransactionID createXidTransactionID(Xid xid,
                                               Ehcache cache)

Create a transaction ID based on a XID for uniqueness

Parameters:

xid - the XID

Returns:

a transaction ID

restoreXidTransactionID

public XidTransactionID restoreXidTransactionID(XidTransactionIDSerializedForm serializedForm)

Restore a XID transaction ID from its serialized form

Parameters:

serializedForm - the XidTransactionID serialized form

Returns:

the restored XidTransactionID

getTransactionStates

protected ConcurrentMap<TransactionID,Decision> getTransactionStates()

Description copied from class: AbstractTransactionIDFactory

Return the map of transaction states.

Specified by:

getTransactionStates in class AbstractTransactionIDFactory

Returns:

the map of transaction states

isPersistent

public Boolean isPersistent()

Description copied from interface: TransactionIDFactory

Return true if the factory state is persistent (survives JVM restart).

This is a tri-state return:

• Boolean.TRUE : persistent
• Boolean.FALSE : not persistent
• null : not yet determined

Returns:

true is state is persistent

isExpired

public boolean isExpired(TransactionID transactionID)

Description copied from interface: TransactionIDFactory

Check if the transaction ID expired, ie: that the transaction died abnormally

Returns:

true if the transaction ID expired and should be cleaned up, false otherwise