--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/javax/management/NotificationFilterSupport.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,163 @@
+/*
+ * Copyright 1999-2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package javax.management;
+
+
+import java.util.List;
+import java.util.Vector;
+
+/**
+ * Provides an implementation of the {@link javax.management.NotificationFilter} interface.
+ * The filtering is performed on the notification type attribute.
+ * <P>
+ * Manages a list of enabled notification types.
+ * A method allows users to enable/disable as many notification types as required.
+ * <P>
+ * Then, before sending a notification to a listener registered with a filter,
+ * the notification broadcaster compares this notification type with all notification types
+ * enabled by the filter. The notification will be sent to the listener
+ * only if its filter enables this notification type.
+ * <P>
+ * Example:
+ * <BLOCKQUOTE>
+ * <PRE>
+ * NotificationFilterSupport myFilter = new NotificationFilterSupport();
+ * myFilter.enableType("my_example.my_type");
+ * myBroadcaster.addListener(myListener, myFilter, null);
+ * </PRE>
+ * </BLOCKQUOTE>
+ * The listener <CODE>myListener</CODE> will only receive notifications the type of which equals/starts with "my_example.my_type".
+ *
+ * @see javax.management.NotificationBroadcaster#addNotificationListener
+ *
+ * @since 1.5
+ */
+public class NotificationFilterSupport implements NotificationFilter {
+
+    /* Serial version */
+    private static final long serialVersionUID = 6579080007561786969L;
+
+    /**
+     * @serial {@link Vector} that contains the enabled notification types.
+     *         The default value is an empty vector.
+     */
+    private List<String> enabledTypes = new Vector<String>();
+
+
+    /**
+     * Invoked before sending the specified notification to the listener.
+     * <BR>This filter compares the type of the specified notification with each enabled type.
+     * If the notification type matches one of the enabled types,
+     * the notification should be sent to the listener and this method returns <CODE>true</CODE>.
+     *
+     * @param notification The notification to be sent.
+     * @return <CODE>true</CODE> if the notification should be sent to the listener, <CODE>false</CODE> otherwise.
+     */
+    public synchronized boolean isNotificationEnabled(Notification notification) {
+
+        String type = notification.getType();
+
+        if (type == null) {
+            return false;
+        }
+        try {
+            for (String prefix : enabledTypes) {
+                if (type.startsWith(prefix)) {
+                    return true;
+                }
+            }
+        } catch (java.lang.NullPointerException e) {
+            // Should never occurs...
+            return false;
+        }
+        return false;
+    }
+
+    /**
+     * Enables all the notifications the type of which starts with the specified prefix
+     * to be sent to the listener.
+     * <BR>If the specified prefix is already in the list of enabled notification types,
+     * this method has no effect.
+     * <P>
+     * Example:
+     * <BLOCKQUOTE>
+     * <PRE>
+     * // Enables all notifications the type of which starts with "my_example" to be sent.
+     * myFilter.enableType("my_example");
+     * // Enables all notifications the type of which is "my_example.my_type" to be sent.
+     * myFilter.enableType("my_example.my_type");
+     * </PRE>
+     * </BLOCKQUOTE>
+     *
+     * Note that:
+     * <BLOCKQUOTE><CODE>
+     * myFilter.enableType("my_example.*");
+     * </CODE></BLOCKQUOTE>
+     * will no match any notification type.
+     *
+     * @param prefix The prefix.
+     * @exception java.lang.IllegalArgumentException The prefix parameter is null.
+     */
+    public synchronized void enableType(String prefix)
+            throws IllegalArgumentException {
+
+        if (prefix == null) {
+            throw new IllegalArgumentException("The prefix cannot be null.");
+        }
+        if (!enabledTypes.contains(prefix)) {
+            enabledTypes.add(prefix);
+        }
+    }
+
+    /**
+     * Removes the given prefix from the prefix list.
+     * <BR>If the specified prefix is not in the list of enabled notification types,
+     * this method has no effect.
+     *
+     * @param prefix The prefix.
+     */
+    public synchronized void disableType(String prefix) {
+        enabledTypes.remove(prefix);
+    }
+
+    /**
+     * Disables all notification types.
+     */
+    public synchronized void disableAllTypes() {
+        enabledTypes.clear();
+    }
+
+
+    /**
+     * Gets all the enabled notification types for this filter.
+     *
+     * @return The list containing all the enabled notification types.
+     */
+    public synchronized Vector<String> getEnabledTypes() {
+        return (Vector<String>)enabledTypes;
+    }
+
+}