beancontextservicerevokedevent.java

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/*
 * @(#)BeanContextServiceRevokedEvent.java	1.9 03/01/23
 *
 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package java.beans.beancontext;

import java.beans.beancontext.BeanContextEvent;

import java.beans.beancontext.BeanContextServices;

/**
 * <p>
 * This event type is used by the 
 * <code>BeanContextServiceRevokedListener</code> in order to
 * identify the service being revoked.
 * </p>
 */
public class BeanContextServiceRevokedEvent extends BeanContextEvent {

    /**
     * Construct a <code>BeanContextServiceEvent</code>.
     * @param bcs the <code>BeanContextServices</code> 
     * from which this service is being revoked
     * @param sc the service that is being revoked
     * @param invalidate <code>true</code> for immediate revocation 
     */
    public BeanContextServiceRevokedEvent(BeanContextServices bcs, Class sc, boolean invalidate) {
	super((BeanContext)bcs);

	serviceClass    = sc;
	invalidateRefs  = invalidate;
    }

    /**
     * Gets the source as a reference of type <code>BeanContextServices</code>
     * @return the <code>BeanContextServices</code> from which 
     * this service is being revoked
     */
    public BeanContextServices getSourceAsBeanContextServices() {
	return (BeanContextServices)getBeanContext();
    }

    /**
     * Gets the service class that is the subject of this notification
     * @return A <code>Class</code> reference to the 
     * service that is being revoked
     */
    public Class getServiceClass() { return serviceClass; }

    /**
     * Checks this event to determine whether or not
     * the service being revoked is of a particular class.
     * @param service the service of interest (should be non-null)
     * @return <code>true</code> if the service being revoked is of the
     * same class as the specified service
     */
    public boolean isServiceClass(Class service) {
	return serviceClass.equals(service);
    }

    /**
     * Reports if the current service is being forcibly revoked,
     * in which case the references are now invalidated and unusable.
     * @return <code>true</code> if current service is being forcibly revoked
     */
    public boolean isCurrentServiceInvalidNow() { return invalidateRefs; }

    /**
     * fields
     */

    /**
     * A <code>Class</code> reference to the service that is being revoked.
     */
    protected Class			 serviceClass;
    private   boolean			 invalidateRefs;
}