stella.io
Class CacheChangedEvent

java.lang.Object
  java.util.EventObject
      stella.io.CacheChangedEvent

All Implemented Interfaces:

Serializable

public class CacheChangedEvent
extends EventObject

An event signaling that the value mapped to a specific key in a polling server's cache has changed. Registered listeners get an event of this type passed to their CacheChangedListener.newValue(stella.io.CacheChangedEvent) method. Note that this event also carries the value of the key to allow the listener to judge whether the event was received accidently.

This event is a purely internal one. No rmi-transport is ever intended. Therefore, alle definitions are found in this package, and this event class only extends the generic EventObject class rather than the {stella.rmi.RmiEvent} class. Additionally, the appropriate caster interface does not implement the genric Caster interface.

See Also:

Serialized Form

Field Summary

private String	key The key in the cache, i.e.
private String	value The new value in the cache, i.e.

Fields inherited from class java.util.EventObject

source

Constructor Summary

CacheChangedEvent(Object src, String cachekey, String newval)
Constructs a new cache changed event.

Method Summary

String	getCommand() The accessor method for the cache key, i.e.
String	getReply() The accessor method for the new cache value, i.e.

Methods inherited from class java.util.EventObject

getSource, toString

Methods inherited from class java.lang.Object

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

Field Detail

key

private String key

The key in the cache, i.e. the serial command sent.

value

private String value

The new value in the cache, i.e. the serial reply.

Constructor Detail

CacheChangedEvent

public CacheChangedEvent(Object src,
                         String cachekey,
                         String newval)

Constructs a new cache changed event. Both String arguments allow the null value.

Parameters:

src - The event source.

cachekey - The key in the cache look-up table, i.e. the serial command.

newval - The new value, i.e. the serial reply.

Method Detail

getCommand

public String getCommand()

The accessor method for the cache key, i.e. the serial command.

getReply

public String getReply()

The accessor method for the new cache value, i.e. the serial reply.