org.jboss.cache.transaction
Class MVCCTransactionContext

java.lang.Object
  org.jboss.cache.transaction.AbstractTransactionContext
      org.jboss.cache.transaction.MVCCTransactionContext

All Implemented Interfaces:

TransactionContext

public class MVCCTransactionContext
extends AbstractTransactionContext

A transaction context specially geared to dealing with MVCC.

Since:

3.0

Author:

Manik Surtani (manik AT jboss DOT org)

Constructor Summary

MVCCTransactionContext(Transaction tx)

Method Summary

void	clearLookedUpNodes() Clears the registry of looked up nodes.
Map<Fqn,NodeSPI>	getLookedUpNodes() Retrieves a map of nodes looked up within the current invocation's scope.
NodeSPI	lookUpNode(Fqn fqn) Retrieves a node from the registry of looked up nodes in the current scope.
void	putLookedUpNode(Fqn f, NodeSPI n) Puts an entry in the registry of looked up nodes in the current scope.
void	putLookedUpNodes(Map<Fqn,NodeSPI> lookedUpNodes)
void	reset() Cleans up internal state, freeing up references.

Methods inherited from class org.jboss.cache.transaction.AbstractTransactionContext

addAllLocks, addDummyNodeCreatedByCacheLoader, addLocalModification, addLock, addModification, addRemovedNode, clearLocks, getDummyNodesCreatedByCacheLoader, getLocalModifications, getLocks, getModifications, getOption, getOrderedSynchronizationHandler, getRemovedNodes, getTransaction, hasAnyModifications, hasLocalModifications, hasLock, hasModifications, isForceAsyncReplication, isForceSyncReplication, removeLock, setForceAsyncReplication, setForceSyncReplication, setOption, setOrderedSynchronizationHandler, setTransaction, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

MVCCTransactionContext

public MVCCTransactionContext(Transaction tx)
                       throws SystemException,
                              RollbackException

Throws:

SystemException

RollbackException

Method Detail

lookUpNode

public NodeSPI lookUpNode(Fqn fqn)

Retrieves a node from the registry of looked up nodes in the current scope.

This is not normally called directly since InvocationContext.lookUpNode(org.jboss.cache.Fqn) would delegate to this method if a transaction is in scope.

Parameters:

fqn - fqn to look up

Returns:

a node, or null if it cannot be found.

putLookedUpNode

public void putLookedUpNode(Fqn f,
                            NodeSPI n)

Puts an entry in the registry of looked up nodes in the current scope.

This is not normally called directly since InvocationContext.putLookedUpNode(org.jboss.cache.Fqn, org.jboss.cache.NodeSPI) would delegate to this method if a transaction is in scope.

Parameters:

f - fqn to add

n - node to add

clearLookedUpNodes

public void clearLookedUpNodes()

Clears the registry of looked up nodes.

This is not normally called directly since InvocationContext.clearLookedUpNodes() would delegate to this method if a transaction is in scope.

getLookedUpNodes

public Map<Fqn,NodeSPI> getLookedUpNodes()

Retrieves a map of nodes looked up within the current invocation's scope.

This is not normally called directly since InvocationContext.getLookedUpNodes() would delegate to this method if a transaction is in scope.

Returns:

a map of looked up nodes.

reset

public void reset()

Description copied from interface: TransactionContext

Cleans up internal state, freeing up references.

Specified by:

reset in interface TransactionContext

Overrides:

reset in class AbstractTransactionContext

putLookedUpNodes

public void putLookedUpNodes(Map<Fqn,NodeSPI> lookedUpNodes)