vishnu.model.transactions
Class TransactionImpl

java.lang.Object
  vishnu.model.transactions.TransactionImpl

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, Transaction

public final class TransactionImpl
extends java.lang.Object
implements Transaction

Author:

Mariano Tepper and Hernan Rancati

See Also:

Serialized Form

Constructor Summary

TransactionImpl(TransactionTerminator c, UserContext userContext)

Method Summary

void	abort() Aborta la transaccion.
void	addOperation(Operation o)
void	commit() Commitea la transaccion
UserContext	getUserContext()
boolean	isAborted() Indica si la transaccion fue abortada.
boolean	isCommited() Indica si la transaccion fue commiteada.
boolean	isFinished() tells whether this transactions has nothing more to do.
boolean	isRunning() tells whether this transactions is doing something or has things to do.
java.util.List<Operation>	operationsDone() returns the sequence of operations that have been already done.
void	readExternal(java.io.ObjectInput arg0)
java.util.Collection<Shareable>	resourcesTakenForRead() returns the resources that are actually in use by the transaction in read mode.
java.util.Collection<Shareable>	resourcesTakenForWrite() returns the resources that are actually in use by the transaction in write mode.
java.util.Collection<Shareable>	resourcesWaitingForRead() returns the resources that are actually waited by the transaction in read mode.
java.util.Collection<Shareable>	resourcesWaitingForWrite() returns the resources that are actually waited by the transaction in write mode.
void	writeExternal(java.io.ObjectOutput arg0)

Methods inherited from class java.lang.Object

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

Constructor Detail

TransactionImpl

public TransactionImpl(TransactionTerminator c,
                       UserContext userContext)

Method Detail

abort

public void abort()

Description copied from interface: Transaction

Aborta la transaccion.

Specified by:

abort in interface Transaction

isAborted

public boolean isAborted()

Description copied from interface: Transaction

Indica si la transaccion fue abortada.

Specified by:

isAborted in interface Transaction

Returns:

true si la transaccion fue abortada, false si no.

commit

public void commit()

Description copied from interface: Transaction

Commitea la transaccion

Specified by:

commit in interface Transaction

isCommited

public boolean isCommited()

Description copied from interface: Transaction

Indica si la transaccion fue commiteada.

Specified by:

isCommited in interface Transaction

Returns:

true si la transaccion fue commiteada, false si no.

isFinished

public boolean isFinished()

Description copied from interface: Transaction

tells whether this transactions has nothing more to do.

Specified by:

isFinished in interface Transaction

isRunning

public boolean isRunning()

Description copied from interface: Transaction

tells whether this transactions is doing something or has things to do.

Specified by:

isRunning in interface Transaction

resourcesTakenForRead

public java.util.Collection<Shareable> resourcesTakenForRead()

Description copied from interface: Transaction

returns the resources that are actually in use by the transaction in read mode.

Specified by:

resourcesTakenForRead in interface Transaction

resourcesWaitingForRead

public java.util.Collection<Shareable> resourcesWaitingForRead()

Description copied from interface: Transaction

returns the resources that are actually waited by the transaction in read mode.

Specified by:

resourcesWaitingForRead in interface Transaction

resourcesTakenForWrite

public java.util.Collection<Shareable> resourcesTakenForWrite()

Description copied from interface: Transaction

returns the resources that are actually in use by the transaction in write mode.

Specified by:

resourcesTakenForWrite in interface Transaction

resourcesWaitingForWrite

public java.util.Collection<Shareable> resourcesWaitingForWrite()

Description copied from interface: Transaction

returns the resources that are actually waited by the transaction in write mode.

Specified by:

resourcesWaitingForWrite in interface Transaction

operationsDone

public java.util.List<Operation> operationsDone()

Description copied from interface: Transaction

returns the sequence of operations that have been already done.

Specified by:

operationsDone in interface Transaction

addOperation

public void addOperation(Operation o)

Specified by:

addOperation in interface Transaction

getUserContext

public UserContext getUserContext()

Specified by:

getUserContext in interface Transaction

writeExternal

public void writeExternal(java.io.ObjectOutput arg0)
                   throws java.io.IOException

Specified by:

writeExternal in interface java.io.Externalizable

Throws:

java.io.IOException

readExternal

public void readExternal(java.io.ObjectInput arg0)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException

Specified by:

readExternal in interface java.io.Externalizable

Throws:

java.io.IOException

java.lang.ClassNotFoundException