| /* AttributeChangeNotificationFilter.java -- Filter on attribute name |
| Copyright (C) 2007 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., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 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 javax.management; |
| |
| import java.io.Serializable; |
| |
| import java.util.Vector; |
| |
| /** |
| * Performs filtering of {@link AttributeChangeNotification}s |
| * based on a list of attribute names. |
| * |
| * @author Andrew John Hughes (gnu_andrew@member.fsf.org) |
| * @since 1.5 |
| */ |
| public class AttributeChangeNotificationFilter |
| implements NotificationFilter, Serializable |
| { |
| |
| /** |
| * Compatible with JDK 1.5 |
| */ |
| private static final long serialVersionUID = -6347317584796410029L; |
| |
| /** |
| * Lists the names of the attributes that may pass |
| * through the filter. |
| */ |
| private final Vector<String> enabledAttributes = new Vector<String>(); |
| |
| /** |
| * Blocks all {@link AttributeChangeNotification}s |
| * by emptying the list of enabled attributes. |
| */ |
| public void disableAllAttributes() |
| { |
| enabledAttributes.clear(); |
| } |
| |
| /** |
| * Removes the specified attribute name from the list |
| * of enabled attributes, thus preventing |
| * {@link AttributeChangeNotification}s for this attribute |
| * from passing through the filter. If the attribute is |
| * not enabled, this has no effect. |
| * |
| * @param name the name of the attribute to disable. |
| */ |
| public void disableAttribute(String name) |
| { |
| enabledAttributes.remove(name); |
| } |
| |
| /** |
| * Adds the specified attribute name to the list |
| * of enabled attributes, thus allowing |
| * {@link AttributeChangeNotification}s for this attribute |
| * to pass through the filter. If the attribute is |
| * enabled, this has no effect. |
| * |
| * @param name the name of the attribute to enable. |
| */ |
| public void enableAttribute(String name) |
| { |
| if (!enabledAttributes.contains(name)) |
| enabledAttributes.add(name); |
| } |
| |
| /** |
| * Returns the list of enabled attributes for this |
| * filter. |
| * |
| * @return the list of enabled attributes. |
| */ |
| public Vector<String> getEnabledAttributes() |
| { |
| return enabledAttributes; |
| } |
| |
| /** |
| * Returns true if the specified notification is an |
| * {@link AttributeChangeNotification} and the name of the |
| * attribute concerned is in the list of enabled attributes |
| * for this filter. |
| * |
| * @param notif the notification being filtered. |
| * @return true if the notification is an |
| * {@link AttributeChangeNotification} for an |
| * enabled attribute. |
| */ |
| public boolean isNotificationEnabled(Notification notif) |
| { |
| if (notif instanceof AttributeChangeNotification) |
| { |
| AttributeChangeNotification n = |
| (AttributeChangeNotification) notif; |
| return enabledAttributes.contains(n.getAttributeName()); |
| } |
| return false; |
| } |
| |
| } |