org.sapia.ubik.rmi.server.gc
Class CommandGc

java.lang.Object
  org.sapia.ubik.rmi.server.command.Command
      org.sapia.ubik.rmi.server.RMICommand
          org.sapia.ubik.rmi.server.gc.CommandGc

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, Executable

public class CommandGc
extends RMICommand

This command is sent by clients (ClientGC instances) that wish to notify the server that they have garbage-collected remote references. The server-side GC (ServerGC) updates the reference count for all object identifiers it receives (which are passed in through this command).

Author:

Yanick Duchesne 2002-09-11

See Also:

Serialized Form

Field Summary

Fields inherited from class org.sapia.ubik.rmi.server.RMICommand

_config, _vmId

Constructor Summary

CommandGc()
Do not call; used for externalization only.

Method Summary

java.lang.Object	execute() Executes this command.
void	readExternal(java.io.ObjectInput in)
void	writeExternal(java.io.ObjectOutput out)

Methods inherited from class org.sapia.ubik.rmi.server.RMICommand

getConnection, getServerAddress, getVmId, init

Methods inherited from class java.lang.Object

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

Constructor Detail

CommandGc

public CommandGc()

Do not call; used for externalization only.

Method Detail

execute

public java.lang.Object execute()
                         throws java.lang.Throwable

Description copied from class: RMICommand

Executes this command.

Specified by:

execute in interface Executable

Specified by:

execute in class RMICommand

Returns:

any value returned by this method.

Throws:

java.lang.Throwable - if an error occurs while executing this command

See Also:

RMICommand.execute()

readExternal

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

Specified by:

readExternal in interface java.io.Externalizable

Overrides:

readExternal in class RMICommand

Throws:

java.io.IOException

java.lang.ClassNotFoundException

See Also:

RMICommand.readExternal(ObjectInput)

writeExternal

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

Specified by:

writeExternal in interface java.io.Externalizable

Overrides:

writeExternal in class RMICommand

Throws:

java.io.IOException

See Also:

RMICommand.writeExternal(ObjectOutput)