/*

 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package javax.management.monitor;

// jmx imports

//

import javax.management.ObjectName;

/**

 * Exposes the remote management interface of monitor MBeans.

 *

 *

 * @since 1.5

 */

public interface MonitorMBean {

    /**

     * Starts the monitor.

     */

    public void start();

    /**

     * Stops the monitor.

     */

    public void stop();

    // GETTERS AND SETTERS

    //--------------------

    /**

     * Adds the specified object in the set of observed MBeans.

     *

     * @param object The object to observe.

     * @exception java.lang.IllegalArgumentException the specified object is null.

     *

     */

    public void addObservedObject(ObjectName object) throws java.lang.IllegalArgumentException;

    /**

     * Removes the specified object from the set of observed MBeans.

     *

     * @param object The object to remove.

     *

     */

    public void removeObservedObject(ObjectName object);

    /**

     * Tests whether the specified object is in the set of observed MBeans.

     *

     * @param object The object to check.

     * @return <CODE>true</CODE> if the specified object is in the set, <CODE>false</CODE> otherwise.

     *

     */

    public boolean containsObservedObject(ObjectName object);

    /**

     * Returns an array containing the objects being observed.

     *

     * @return The objects being observed.

     *

     */

    public ObjectName[] getObservedObjects();

    /**

     * Gets the object name of the object being observed.

     *

     * @return The object being observed.

     *

     * @see #setObservedObject

     *

     * @deprecated As of JMX 1.2, replaced by {@link #getObservedObjects}

     */

    @Deprecated

    public ObjectName getObservedObject();

    /**

     * Sets the object to observe identified by its object name.

     *

     * @param object The object to observe.

     *

     * @see #getObservedObject

     *

     * @deprecated As of JMX 1.2, replaced by {@link #addObservedObject}

     */

    @Deprecated

    public void setObservedObject(ObjectName object);

    /**

     * Gets the attribute being observed.

     *

     * @return The attribute being observed.

     *

     * @see #setObservedAttribute

     */

    public String getObservedAttribute();

    /**

     * Sets the attribute to observe.

     *

     * @param attribute The attribute to observe.

     *

     * @see #getObservedAttribute

     */

    public void setObservedAttribute(String attribute);

    /**

     * Gets the granularity period (in milliseconds).

     *

     * @return The granularity period.

     *

     * @see #setGranularityPeriod

     */

    public long getGranularityPeriod();

    /**

     * Sets the granularity period (in milliseconds).

     *

     * @param period The granularity period.

     * @exception java.lang.IllegalArgumentException The granularity

     * period is less than or equal to zero.

     *

     * @see #getGranularityPeriod

     */

    public void setGranularityPeriod(long period) throws java.lang.IllegalArgumentException;

    /**

     * Tests if the monitor MBean is active.

     * A monitor MBean is marked active when the {@link #start start} method is called.

     * It becomes inactive when the {@link #stop stop} method is called.

     *

     * @return <CODE>true</CODE> if the monitor MBean is active, <CODE>false</CODE> otherwise.

     */

    public boolean isActive();

}