1 /* 2 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 27 28 package com.sun.org.glassfish.external.statistics; 29 30 /** 31 * The Statistic model and its sub-models specify the data models which are requried to be used to provide the performance data described by the specific attributes in the Stats models. 32 */ 33 public interface Statistic { 34 /** 35 * The name of this Statistic. 36 */ 37 String getName(); 38 39 /** 40 * The unit of measurement for this Statistic. 41 * Valid values for TimeStatistic measurements are "HOUR", "MINUTE", "SECOND", "MILLISECOND", "MICROSECOND" and "NANOSECOND". 42 */ 43 String getUnit(); 44 45 /** 46 * A human-readable description of the Statistic. 47 */ 48 String getDescription(); 49 50 /** 51 * The time of the first measurement represented as a long, whose value is the number of milliseconds since January 1, 1970, 00:00:00. 52 */ 53 long getStartTime(); 54 55 /** 56 * The time of the last measurement represented as a long, whose value is the number of milliseconds since January 1, 1970, 00:00:00. 57 */ 58 long getLastSampleTime(); 59 }