org.jboss.cache.transaction
Class TransactionTable

java.lang.Object
  org.jboss.cache.transaction.TransactionTable

public class TransactionTable
extends Object

Maintains the mapping between a local Transaction and a GlobalTransaction. Also stores TransactionEntry instances under a given transaction.

Version:

$Revision: 5190 $

Author:

Bela Ban Apr 14, 2003

Field Summary

protected Map<Transaction,GlobalTransaction>	tx_map Mapping between local (javax.transaction.Transaction) and GlobalTransactions.
protected Map<GlobalTransaction,TransactionEntry>	txs Mappings between GlobalTransactions and modifications.

Constructor Summary

TransactionTable()

Method Summary

void	addCacheLoaderModification(GlobalTransaction gtx, MethodCall m)
void	addLock(GlobalTransaction gtx, NodeLock l) Adds a lock to the global transaction.
void	addLocks(GlobalTransaction gtx, Collection<NodeLock> locks) Adds a collection of locks to the global transaction.
void	addModification(GlobalTransaction gtx, MethodCall m) Adds a motification to the global transaction.
void	addUndoOperation(GlobalTransaction gtx, MethodCall m) Adds an undo operation to the global transaction.
void	cleanup(GlobalTransaction gtx)
TransactionEntry	get(GlobalTransaction gtx) Returns the local transaction entry for the global transaction.
GlobalTransaction	get(Transaction tx) Returns the global transaction associated with the local transaction.
Transaction	getLocalTransaction(GlobalTransaction gtx) Returns the local transaction associated with a GlobalTransaction.
int	getNumGlobalTransactions() Returns the number of global transactions.
int	getNumLocalTransactions() Returns the number of local transactions.
boolean	isNodeRemovedInTx(GlobalTransaction gtx, Fqn fqn)
void	put(GlobalTransaction tx, TransactionEntry entry) Associates the global transaction with a transaction entry.
void	put(Transaction tx, GlobalTransaction gtx) Associates the global transaction with the local transaction.
void	recordNodeLock(GlobalTransaction gtx, NodeLock lock) Add the lock to the list of locks maintained for this transaction (needed for release of locks on commit or rollback)
TransactionEntry	remove(GlobalTransaction tx) Removes a global transation, returns the old transaction entry.
GlobalTransaction	remove(Transaction tx) Removes a local transation, returns the global transaction entry.
String	toString() Returns summary debug information.
String	toString(boolean print_details) Returns detailed debug information.

Methods inherited from class java.lang.Object

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

Field Detail

tx_map

protected Map<Transaction,GlobalTransaction> tx_map

Mapping between local (javax.transaction.Transaction) and GlobalTransactions. New: a local TX can have a number of GTXs

txs

protected Map<GlobalTransaction,TransactionEntry> txs

Mappings between GlobalTransactions and modifications.

Constructor Detail

TransactionTable

public TransactionTable()

Method Detail

getNumLocalTransactions

public int getNumLocalTransactions()

Returns the number of local transactions.

getNumGlobalTransactions

public int getNumGlobalTransactions()

Returns the number of global transactions.

get

public GlobalTransaction get(Transaction tx)

Returns the global transaction associated with the local transaction. Returns null if tx is null or it was not found.

getLocalTransaction

public Transaction getLocalTransaction(GlobalTransaction gtx)

Returns the local transaction associated with a GlobalTransaction. Not very efficient as the values have to be iterated over, don't use frequently

Parameters:

gtx - The GlobalTransaction

Returns:

Transaction. The local transaction associated with a given GlobalTransaction). This will be null if no local transaction is associated with a given GTX

put

public void put(Transaction tx,
                GlobalTransaction gtx)

Associates the global transaction with the local transaction.

get

public TransactionEntry get(GlobalTransaction gtx)

Returns the local transaction entry for the global transaction. Returns null if tx is null or it was not found.

put

public void put(GlobalTransaction tx,
                TransactionEntry entry)

Associates the global transaction with a transaction entry.

remove

public TransactionEntry remove(GlobalTransaction tx)

Removes a global transation, returns the old transaction entry.

remove

public GlobalTransaction remove(Transaction tx)

Removes a local transation, returns the global transaction entry.

addModification

public void addModification(GlobalTransaction gtx,
                            MethodCall m)

Adds a motification to the global transaction.

addCacheLoaderModification

public void addCacheLoaderModification(GlobalTransaction gtx,
                                       MethodCall m)

addUndoOperation

public void addUndoOperation(GlobalTransaction gtx,
                             MethodCall m)

Adds an undo operation to the global transaction.

addLock

public void addLock(GlobalTransaction gtx,
                    NodeLock l)

Adds a lock to the global transaction.

addLocks

public void addLocks(GlobalTransaction gtx,
                     Collection<NodeLock> locks)

Adds a collection of locks to the global transaction.

cleanup

public void cleanup(GlobalTransaction gtx)

toString

public String toString()

Returns summary debug information.

Overrides:

toString in class Object

toString

public String toString(boolean print_details)

Returns detailed debug information.

recordNodeLock

public void recordNodeLock(GlobalTransaction gtx,
                           NodeLock lock)

Add the lock to the list of locks maintained for this transaction (needed for release of locks on commit or rollback)

isNodeRemovedInTx

public boolean isNodeRemovedInTx(GlobalTransaction gtx,
                                 Fqn fqn)