com.ibm.tspaces
Class TupleSpaceEvent

java.lang.Object
  |
  +--com.ibm.tspaces.TupleSpaceEvent

public class TupleSpaceEvent

extends java.lang.Object

This class implements tuplespace event. The event contains an id which indicates the type of event it is and which other Event variables are relavent for the event.

Author:

Matthias Eichstaedt

Field Summary

TupleSpaceEvent	evt The next event.
int	id The type of this event.
java.lang.String	source The space name where the event was triggered.
SuperTuple	superTuple A tuple.
static int	TUPLE_ADD The add-tuple constant.
static int	TUPLE_REMOVE The removed-tuple constant.
static int	UPDATE The update constant.

Constructor Summary

TupleSpaceEvent(java.lang.String source, int id, SuperTuple superTuple)
Constructs an event from the specified tuplespace, event type, and tuple

Method Summary

boolean	add() Checks if this is an add event.
int	getID() Return the type of this event.
SuperTuple	getTuple() Return the tuple of this event.
boolean	remove() Checks if this is a remove event.
java.lang.String	toString() Return a string representation of this event.
boolean	update() Checks if this is an update event.

Methods inherited from class java.lang.Object

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

Field Detail

TUPLE_ADD

public static final int TUPLE_ADD

The add-tuple constant.

TUPLE_REMOVE

public static final int TUPLE_REMOVE

The removed-tuple constant.

UPDATE

public static final int UPDATE

The update constant. Use this constant whenever its neither add nor delete. ;-)

source

public java.lang.String source

The space name where the event was triggered.

id

public int id

The type of this event.

superTuple

public SuperTuple superTuple

A tuple.

evt

public TupleSpaceEvent evt

The next event. Used when putting events into a linked list.

Constructor Detail

TupleSpaceEvent

public TupleSpaceEvent(java.lang.String source,
                       int id,
                       SuperTuple superTuple)

Constructs an event from the specified tuplespace, event type, and tuple

Parameters:

source - - the space name from which the event was triggered

id - - the event type

Method Detail

add

public boolean add()

Checks if this is an add event.

Returns:

boolean - true if this in an add event

remove

public boolean remove()

Checks if this is a remove event.

Returns:

boolean - true if this in a remove event

update

public boolean update()

Checks if this is an update event.

Returns:

boolean - true if this in an update event

getID

public int getID()

Return the type of this event.

Returns:

int - type of this event

getTuple

public SuperTuple getTuple()

Return the tuple of this event.

Returns:

Tuple - this tuple

toString

public java.lang.String toString()

Return a string representation of this event.

Overrides:

toString in class java.lang.Object

Parameters:

String - - string representation