org.jboss.cache
Class TransactionEntry

java.lang.Object
  |
  +--org.jboss.cache.TransactionEntry

Direct Known Subclasses:

OptimisticTransactionEntry

public class TransactionEntry

extends java.lang.Object

This is the value (key being the GlobalTransaction) in the transaction table of TreeCache.
A TransactionEntry maintains

• Handle to local Transactions: there can be more than 1 local TX associated with a GlobalTransaction
• List of modifications (Modification)
• List of nodes that were created as part of lock acquisition. These nodes can be safely deleted when a transaction is rolled back
• List of locks (IdentityLock) that have been acquired by this transaction so far

Version:

$Revision: 1.1.1.1 $

Author:

Bela Ban Apr 14, 2003

Field Summary

protected java.util.List	locks List of locks acquired by the transaction (IdentityLock)
protected javax.transaction.Transaction	ltx Local transaction
protected java.util.List	modification_list List of modifications (MethodCall).
protected java.util.List	nodes List of nodes created.
protected java.util.List	undo_list List.

Constructor Summary

TransactionEntry()

Method Summary

void	addLock(IdentityLock l)
void	addLocks(java.util.Collection newLocks)
void	addModification(org.jgroups.blocks.MethodCall m)
void	addNode(Fqn fqn)
void	addUndoOperation(org.jgroups.blocks.MethodCall m)
java.util.List	getLocks()
java.util.List	getModifications()
java.util.List	getNodes()
javax.transaction.Transaction	getTransaction() Returns a list of local transactions associated with this TransactionEntry
java.util.List	getUndoOperations()
void	releaseAllLocks(java.lang.Object owner)
void	setTransaction(javax.transaction.Transaction tx)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

ltx

protected javax.transaction.Transaction ltx

Local transaction

modification_list

protected java.util.List modification_list

List of modifications (MethodCall). They will be replicated on TX commit

undo_list

protected java.util.List undo_list

List. List of compensating MethodCall objects which revert the ones in modification_list. For each entry in the modification list, we have a corresponding entry in this list. A rollback will simply iterate over this list in reverse to undo the modifications. Note that these undo-ops will never be replicated.

nodes

protected java.util.List nodes

List of nodes created. Elements are fully qualified names (Fqns)

locks

protected java.util.List locks

List of locks acquired by the transaction (IdentityLock)

Constructor Detail

TransactionEntry

public TransactionEntry()

Method Detail

addModification

public void addModification(org.jgroups.blocks.MethodCall m)

getModifications

public java.util.List getModifications()

addUndoOperation

public void addUndoOperation(org.jgroups.blocks.MethodCall m)

getUndoOperations

public java.util.List getUndoOperations()

addNode

public void addNode(Fqn fqn)

getNodes

public java.util.List getNodes()

setTransaction

public void setTransaction(javax.transaction.Transaction tx)

getTransaction

public javax.transaction.Transaction getTransaction()

Returns a list of local transactions associated with this TransactionEntry

Returns:

addLock

public void addLock(IdentityLock l)

addLocks

public void addLocks(java.util.Collection newLocks)

Parameters:

newLocks - Collection

getLocks

public java.util.List getLocks()

releaseAllLocks

public void releaseAllLocks(java.lang.Object owner)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object