beancontextservicerevokedevent.java

俄罗斯高人Mamaich的Pocket gcc编译器（运行在PocketPC上）的全部源代码。

/* 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.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.

As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module.  An independent module is a module which is not derived from
or based on this library.  If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so.  If you do not wish to do so, delete this
exception statement from your version. */


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;
	}
}