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Java > Open Source Codes > com > jeantessier > metrics > ContextAccumulatorMeasurement


1 /*
2  * Copyright (c) 2001-2005, Jean Tessier
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * * Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  *
12  * * Redistributions in binary form must reproduce the above copyright
13  * notice, this list of conditions and the following disclaimer in the
14  * documentation and/or other materials provided with the distribution.
15  *
16  * * Neither the name of Jean Tessier nor the names of his contributors
17  * may be used to endorse or promote products derived from this software
18  * without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32
33 package com.jeantessier.metrics;
34
35 /**
36  * <p>Accumulates entries in context, filtering with regular
37  * expressions. If no regular expressions are given, matches
38  * everything for the given measurement, which must implement
39  * the <code>CollectionMeasurement</code> interface. Regular
40  * expressions matching using <code>Perl5Util</code> from
41  * Jakarta-ORO. This measurement will use
42  * <code>Perl5Util.group(1)</code> if not null, otherwise the
43  * full string.</p>
44  *
45  * <p>This is the syntax for initializing this type of
46  * measurement:</p>
47  *
48  * <pre>
49  * &lt;init&gt;
50  * measurement name [perl regular expression]
51  * ...
52  * &lt;/init&gt;
53  * </pre>
54  */
55 public class ContextAccumulatorMeasurement extends AccumulatorMeasurement {
56     public ContextAccumulatorMeasurement(MeasurementDescriptor descriptor, Metrics context, String JavaDoc initText) {
57         super(descriptor, context, initText);
58     }
59     
60     public void accept(MeasurementVisitor visitor) {
61         visitor.visitContextAccumulatorMeasurement(this);
62     }
63
64     protected void populateValues() {
65         filterMetrics(getContext());
66     }
67 }
68
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