org.axonframework.domain
Class SystemEvent

java.lang.Object
  org.axonframework.domain.EventBase
      org.axonframework.domain.ApplicationEvent
          org.axonframework.domain.SystemEvent

All Implemented Interfaces:

Serializable, Event

public abstract class SystemEvent
extends ApplicationEvent

System events are a special type of application event. They notify the application of a state change of an application component.

In addition to the information provided by the ApplicationEvent, system events also provide information about the exception that caused the event.

Since:

0.4

Author:

Allard Buijze

See Also:

Serialized Form

Constructor Summary

protected	SystemEvent(Object source) Initialize a system event with the given source, and without an explicit cause.
protected	SystemEvent(Object source, Throwable cause) Initialize a system event with the given source and cause.

Method Summary

Throwable

getCause() Returns the cause that was attached to this event.

Methods inherited from class org.axonframework.domain.ApplicationEvent

getSource, getSourceDescription, getSourceType

Methods inherited from class org.axonframework.domain.EventBase

addMetaData, equals, getEventIdentifier, getEventRevision, getMetaData, getMetaDataValue, getTimestamp, hashCode, setEventRevision

Methods inherited from class java.lang.Object

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

Constructor Detail

SystemEvent

protected SystemEvent(Object source)

Initialize a system event with the given source, and without an explicit cause.

Parameters:

source - The instance that reported this event. May be null.

SystemEvent

protected SystemEvent(Object source,
                      Throwable cause)

Initialize a system event with the given source and cause.

Parameters:

source - The instance that reported this event. May be null.

cause - The exception that cause this event to be dispatched

Method Detail

getCause

public Throwable getCause()

Returns the cause that was attached to this event. Can return null.

Returns:

the cause that was attached to this event. Can return null.