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package org.apache.catalina;
import java.util.EventObject;
/**
* General event for notifying listeners of significant changes on a component
* that implements the Lifecycle interface. In particular, this will be useful
* on Containers, where these events replace the ContextInterceptor concept in
* Tomcat 3.x.
*
* @author Craig R. McClanahan
* @version $Revision: 1.3 $ $Date: 2007/05/05 05:31:51 $
*/
public final class LifecycleEvent
extends EventObject {
// ----------------------------------------------------------- Constructors
/**
* Construct a new LifecycleEvent with the specified parameters.
*
* @param lifecycle Component on which this event occurred
* @param type Event type (required)
*/
public LifecycleEvent(Lifecycle lifecycle, String type) {
this(lifecycle, type, null);
}
/**
* Construct a new LifecycleEvent with the specified parameters.
*
* @param lifecycle Component on which this event occurred
* @param type Event type (required)
* @param data Event data (if any)
*/
public LifecycleEvent(Lifecycle lifecycle, String type, Object data) {
super(lifecycle);
this.lifecycle = lifecycle;
this.type = type;
this.data = data;
}
// ----------------------------------------------------- Instance Variables
/**
* The event data associated with this event.
*/
private Object data = null;
/**
* The Lifecycle on which this event occurred.
*/
private Lifecycle lifecycle = null;
/**
* The event type this instance represents.
*/
private String type = null;
// ------------------------------------------------------------- Properties
/**
* Return the event data of this event.
*/
public Object getData() {
return (this.data);
}
/**
* Return the Lifecycle on which this event occurred.
*/
public Lifecycle getLifecycle() {
return (this.lifecycle);
}
/**
* Return the event type of this event.
*/
public String getType() {
return (this.type);
}
}
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