01: /*
02: * JBoss, Home of Professional Open Source.
03: * Copyright 2006, Red Hat Middleware LLC, and individual contributors
04: * as indicated by the @author tags. See the copyright.txt file in the
05: * distribution for a full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * published by the Free Software Foundation; either version 2.1 of
10: * the License, or (at your option) any later version.
11: *
12: * This software is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this software; if not, write to the Free
19: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21: */
22: package javax.management.j2ee.statistics;
23:
24: /**
25: * The Statistic model and its sub-models specify the data models which are requried to be used to provide the performance
26: * data described by the specific attributes in the Stats models.
27: *
28: * @author thomas.diesler@jboss.org
29: */
30: public interface Statistic {
31: /**
32: * The name of this Statistic.
33: */
34: public String getName();
35:
36: /**
37: * The unit of measurement for this Statistic. Valid values for TimeStatistic measurements are "HOUR", "MINUTE", "SECOND", "MILLISECOND", "MICROSECOND" and "NANOSECOND".
38: */
39: public String getUnit();
40:
41: /**
42: * A human-readable description of the Statistic.
43: */
44: public String getDescription();
45:
46: /**
47: * The time of the first measurement represented as a long, whose value is the number of milliseconds since January 1, 1970, 00:00:00.
48: */
49: public long getStartTime();
50:
51: /**
52: * The time of the last measurement represented as a long, whose value is the number of milliseconds since January 1, 1970, 00:00:00.
53: */
54: public long getLastSampleTime();
55: }
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