/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source 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 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Sam
*/
package javax.management.j2ee.statistics;
/**
* A statistic about a managed object.
*/
public interface Statistic
{
/**
* Returns the name of this statistics, corresponding to the name of the {@link Stats}
* attribute that provides the value.
*/
public String getName();
/**
* Returns the unit of measurement for this statistic.
*
* TimeStatistic returns one of "HOUR", "MINUTE",
* "SECOND", "MILLISECOND", "MICROSECOND", or "NANOSECOND".
* @return
*/
public String getUnit();
/**
* A description of the statistic.
*/
public String getDescription();
/**
* Returns the time that the first measurement was taken for this statistic,
* the number of milliseconds sinch 00:00 January 1, 1970.
*/
public long getStartTime();
/**
* Returns the time that the last measurement was taken for this statistic,
* the number of milliseconds sinch 00:00 January 1, 1970.
*/
public long getLastSampleTime();
}