org.xvsm.remote.freepastry
Class MyAspect

java.lang.Object
  org.xvsm.core.aspect.IAspect
      org.xvsm.core.aspect.LocalAspect
          org.xvsm.remote.freepastry.MyAspect

All Implemented Interfaces:

java.io.Serializable

public class MyAspect
extends LocalAspect

Aspect, which writes the values of a write operation into the replicas, before they are written into the container.

Author:

Hannu-Daniel Goiss

See Also:

Serialized Form

Field Summary

Fields inherited from class org.xvsm.core.aspect.IAspect

properties

Constructor Summary

MyAspect()

Method Summary

void	preDestroy(ContainerRef cref, Transaction tx, java.util.List<Selector> selectors, java.util.Properties contextProperties) Called before a delete operation is executed.
void	preShift(ContainerRef cref, Transaction tx, java.util.List<Entry> entries, java.util.Properties contextProperties) Called before a shift operation is executed.
void	preTake(ContainerRef cref, Transaction tx, java.util.List<Selector> selectors, java.util.Properties contextProperties) Called before a take operation is executed.
void	preWrite(ContainerRef cref, Transaction tx, java.util.List<Entry> entries, int retrycount, java.util.Properties contextProperties) Called before a write operation is executed.

Methods inherited from class org.xvsm.core.aspect.LocalAspect

execute, postAddAspect, postDestroy, postRead, postRemoveAspect, postShift, postTake, postWrite, preAddAspect, preRead, preRemoveAspect

Methods inherited from class org.xvsm.core.aspect.IAspect

getId, getProperties, setId, setProperties

Methods inherited from class java.lang.Object

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

Constructor Detail

MyAspect

public MyAspect()

Method Detail

preDestroy

public void preDestroy(ContainerRef cref,
                       Transaction tx,
                       java.util.List<Selector> selectors,
                       java.util.Properties contextProperties)
                throws AspectNotOkException,
                       AspectRescheduleException,
                       AspectSkipException

Description copied from class: LocalAspect

Called before a delete operation is executed.

Overrides:

preDestroy in class LocalAspect

Parameters:

cref - the ContainerRef.

tx - the Transaction.

selectors - the Selectors.

contextProperties - the properties given by the client to give the aspect additional information.

Throws:

AspectNotOkException - if the aspect wants to abort the surrounding transaction.

AspectRescheduleException - if the aspect wants to reschedule just this operation.

AspectSkipException - if the aspect just want to skip to the next operation. Skip will also skip all following registered aspects on that container.

preShift

public void preShift(ContainerRef cref,
                     Transaction tx,
                     java.util.List<Entry> entries,
                     java.util.Properties contextProperties)
              throws AspectNotOkException,
                     AspectRescheduleException,
                     AspectSkipException

Description copied from class: LocalAspect

Called before a shift operation is executed.

Overrides:

preShift in class LocalAspect

Parameters:

cref - the ContainerRef.

tx - the Transaction.

entries - entries the entries to write.

contextProperties - the properties given by the client to give the aspect additional information.

Throws:

AspectNotOkException - if the aspect wants to abort the surrounding transaction.

AspectRescheduleException - if the aspect wants to reschedule just this operation.

AspectSkipException - if the aspect just want to skip to the next operation. Skip will also skip all following registered aspects on that container.

preTake

public void preTake(ContainerRef cref,
                    Transaction tx,
                    java.util.List<Selector> selectors,
                    java.util.Properties contextProperties)
             throws AspectNotOkException,
                    AspectRescheduleException,
                    AspectSkipException

Description copied from class: LocalAspect

Called before a take operation is executed.

Overrides:

preTake in class LocalAspect

Parameters:

cref - the ContainerRef.

tx - the Transaction.

selectors - the Selectors.

contextProperties - the properties given by the client to give the aspect additional information.

Throws:

AspectNotOkException - if the aspect wants to abort the surrounding transaction.

AspectRescheduleException - if the aspect wants to reschedule just this operation.

AspectSkipException - if the aspect just want to skip to the next operation. Skip will also skip all following registered aspects on that container.

preWrite

public void preWrite(ContainerRef cref,
                     Transaction tx,
                     java.util.List<Entry> entries,
                     int retrycount,
                     java.util.Properties contextProperties)
              throws AspectNotOkException,
                     AspectRescheduleException,
                     AspectSkipException

Description copied from class: LocalAspect

Called before a write operation is executed. This aspect is called whenever a blocking write tries to write.

Overrides:

preWrite in class LocalAspect

Parameters:

cref - the ContainerRef.

tx - the Transaction.

entries - the Entrys to write.

retrycount - indicates how often a read operation has been retried (0 on the first call).

contextProperties - the properties given by the client to give the aspect additional information.

Throws:

AspectNotOkException - if the aspect wants to abort the surrounding transaction.

AspectRescheduleException - if the aspect wants to reschedule just this operation.

AspectSkipException - if the aspect just want to skip to the next operation. Skip will also skip all following registered aspects on that container.