libjava/java/beans/beancontext/BeanContextServiceRevokedEvent.java

/* java.beans.beancontext.BeanContextServiceRevokedEvent
   Copyright (C) 1999, 2000 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
 
GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.

As a special exception, if you link this library with other files to
produce an executable, this library does not by itself cause the
resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why the
executable file might be covered by the GNU General Public License. */


package java.beans.beancontext;

/**
 * Event fired when services are revoked from a <code>BeanContextServices</code>.
 *
 * @author John Keiser
 * @since JDK1.2
 * @see java.beans.beancontext.BeanContextServiceRevokedListener
 */

public class BeanContextServiceRevokedEvent extends BeanContextEvent {
	/**
	 * The <code>Class</code> representing the service which is now
	 * available.
	 */
	protected Class serviceClass;
	private boolean invalidateRefs;

	/**
	 * Create a new service revoked event.
	 * @param services the <code>BeanContextServices</code> through
	 *        which the service was available.  This is also the source
	 *        of the event.
	 * @param serviceClass the service class that is now revoked.
	 * @param revokeNow whether the revocation is immediate for all
	 *        classes or just a suggestion.
	 */
	public BeanContextServiceRevokedEvent(BeanContextServices services, Class serviceClass, boolean revokeNow) {
		super(services);
		this.serviceClass = serviceClass;
		invalidateRefs = revokeNow;
	}

	/**
	 * Get the revoked service class.
	 * @return the service class.
	 */
	public Class getServiceClass() {
		return serviceClass;
	}

	/**
	 * Tell whether the revoked service class is the same as the specified class.
	 * Identical to <code>getServiceClass().equals(c)</code>.
	 * @param c the class to compare.
	 * @return whether the clases are equal.
	 */
	public boolean isServiceClass(Class c) {
		return serviceClass.equals(c);
	}

	/**
	 * Get the <code>BeanContextServices</code> through which the service was available.
	 * @return the <code>BeanContextServices</code> through which the
	 *         service was available.
	 */
	public BeanContextServices getSourceAsBeanContextServices() {
		return (BeanContextServices)getSource();
	}

	/**
	 * Tell whether current instances of the revoked service are usable or not.
	 * This is determined by whether the service was revoked
	 * immediately.
	 *
	 * @return whether current instances of the revoked service are
	 *         usable.
	 */
	public boolean isCurrentServiceInvalidNow() {
		return invalidateRefs;
	}
}