|
1
32
33 package com.jeantessier.metrics;
34
35 import java.util.*;
36
37 public class MetricsComparator implements Comparator {
38 public static final int DESCENDING = -1;
39 public static final int ASCENDING = 1;
40
41 private String  name;
42 private int direction;
43 private int dispose;
44
45 public MetricsComparator(String name) {
46 this(name, StatisticalMeasurement.DISPOSE_IGNORE);
47 }
48
49 public MetricsComparator(String name, int dispose) {
50 setName(name);
51 setDispose(dispose);
52 setDirection(ASCENDING);
53 }
54
55 public String getName() {
56 return name;
57 }
58
59 public void setName(String name) {
60 this.name = name;
61 }
62
63 public int getDirection() {
64 return direction;
65 }
66
67 public void setDirection(int direction) {
68 this.direction = direction;
69 }
70
71 public int getDispose() {
72 return dispose;
73 }
74
75 public void setDispose(int dispose) {
76 this.dispose = dispose;
77 }
78
79 public void sortOn(String name, int dispose) {
80 if (name.equals(this.name) && dispose == this.dispose) {
81 reverse();
82 } else {
83 setName(name);
84 setDirection(ASCENDING);
85 setDispose(dispose);
86 }
87 }
88
89 public void reverse() {
90 direction *= -1;
91 }
92
93 public int compare(Object o1, Object o2) {
94 int result;
95
96 Metrics metrics1 = (Metrics) o1;
97 Metrics metrics2 = (Metrics) o2;
98
99 if ("name".equals(name)) {
100 result = metrics1.getName().compareTo(metrics2.getName());
101 } else {
102 Measurement m1 = metrics1.getMeasurement(name);
103 Measurement m2 = metrics2.getMeasurement(name);
104
105 if (m1 == null && m2 != null) {
106 result = -1;
107 } else if (m1 != null && m2 == null) {
108 result = 1;
109 } else if (m1 == m2) {
110 result = 0;
111 } else {
112 double v1 = extractValue(m1);
113 double v2 = extractValue(m2);
114
115 if (Double.isNaN(v1) && !Double.isNaN(v2)) {
116 result = 1 * getDirection();
117 } else if (!Double.isNaN(v1) && Double.isNaN(v2)) {
118 result = -1 * getDirection();
119 } else if (Double.isNaN(v1) && Double.isNaN(v2)) {
120 result = 0;
121 } else if (v1 < v2) {
122 result = -1;
123 } else if (v1 > v2) {
124 result = 1;
125 } else {
126 result = 0;
127 }
128 }
129 }
130
131 result *= getDirection();
132
133 return result;
134 }
135
136 private double extractValue(Measurement m) {
137 double result = Double.NaN;
138
139 if (m instanceof StatisticalMeasurement) {
140 StatisticalMeasurement sm = (StatisticalMeasurement) m;
141 switch (getDispose()) {
142 case StatisticalMeasurement.DISPOSE_MINIMUM:
143 result = sm.getMinimum();
144 break;
145
146 case StatisticalMeasurement.DISPOSE_MEDIAN:
147 result = sm.getMedian();
148 break;
149
150 case StatisticalMeasurement.DISPOSE_AVERAGE:
151 result = sm.getAverage();
152 break;
153
154 case StatisticalMeasurement.DISPOSE_STANDARD_DEVIATION:
155 result = sm.getStandardDeviation();
156 break;
157
158 case StatisticalMeasurement.DISPOSE_MAXIMUM:
159 result = sm.getMaximum();
160 break;
161
162 case StatisticalMeasurement.DISPOSE_SUM:
163 result = sm.getSum();
164 break;
165
166 case StatisticalMeasurement.DISPOSE_NB_DATA_POINTS:
167 result = sm.getNbDataPoints();
168 break;
169
170 default:
171 case StatisticalMeasurement.DISPOSE_IGNORE:
172 break;
173 }
174 } else {
175 result = m.doubleValue();
176 }
177
178 return result;
179 }
180 }
181 |
Popular Tags |
Java API By Example, From Geeks To Geeks.