1/*
2 * Copyright (c) 2009, 2013, 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
28package 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 */
33public 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}
60