org.eclipse.jetty.monitor.jmx
Class EventTrigger

java.lang.Object
  org.eclipse.jetty.monitor.jmx.EventTrigger

Direct Known Subclasses:

AggregateEventTrigger, AndEventTrigger, AttrEventTrigger, OrEventTrigger

public abstract class EventTrigger
extends java.lang.Object

EventTrigger Abstract base class for all EventTrigger implementations. Used to determine whether the necessary conditions for triggering an event are present.

Constructor Summary

EventTrigger()
Construct an event trigger

Method Summary

java.lang.String	getID() Retrieve the identification string of the event trigger
abstract EventState<?>	getState(long timestamp) Retrieve the event state associated with specified invocation of the event trigger match method
abstract boolean	match(long timestamp) Abstract method to verify if the event trigger conditions are in the appropriate state for an event to be triggered

Methods inherited from class java.lang.Object

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

Constructor Detail

EventTrigger

public EventTrigger()

Construct an event trigger

Method Detail

getID

public java.lang.String getID()

Retrieve the identification string of the event trigger

Returns:

unique identification string

match

public abstract boolean match(long timestamp)
                       throws java.lang.Exception

Abstract method to verify if the event trigger conditions are in the appropriate state for an event to be triggered

Returns:

true to trigger an event

Throws:

java.lang.Exception

getState

public abstract EventState<?> getState(long timestamp)

Retrieve the event state associated with specified invocation of the event trigger match method

Parameters:

timestamp - time stamp associated with invocation

Returns:

event state or null if not found