ostore.update
Class Action

java.lang.Object
  |
  +--ostore.update.Action

All Implemented Interfaces:

QuickSerializable

Direct Known Subclasses:

ActionAppendBlocks, ActionExpand, ActionReplaceBlocks, ActionSetMetadata, ActionTruncate

public abstract class Action

extends Object

implements QuickSerializable

The Action class is the base class for internal actions in the OceanStore system.

Version:

$Id: Action.java,v 1.22 2002/07/25 06:03:07 eaton Exp $

Author:

Patrick R. Eaton

Constructor Summary

protected	Action()
protected	Action(InputBuffer buffer)

Method Summary

abstract long	getLength() Return the length of data modified (in bytes).
void	serialize(OutputBuffer buffer) Add the object to the buffer.
abstract String	toString() Return a representation of this action as a string.

Methods inherited from class java.lang.Object

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

Constructor Detail

Action

protected Action()

Action

protected Action(InputBuffer buffer)
          throws QSException

Method Detail

serialize

public void serialize(OutputBuffer buffer)

Description copied from interface: QuickSerializable

Add the object to the buffer.

Specified by:

serialize in interface QuickSerializable

Parameters:

buffer - the output buffer to add the object to

getLength

public abstract long getLength()

Return the length of data modified (in bytes).

Returns:

length of data modified (in bytes).

toString

public abstract String toString()

Return a representation of this action as a string.

Overrides:

toString in class Object

Returns:

a string representation of this action