Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/ValueKey.java @ 4269:0c766c475805

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Add Panel and Tree UI classes for dispayling the measurement station info The new ui classes are using the new extracted base class InfoPanel and InfoTree which are in common with the gauge info.
author Björn Ricks <bjoern.ricks@intevation.de>
date Fri, 26 Oct 2012 12:22:06 +0200
parents 6dc847194625
children
rev   line source
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1 package de.intevation.flys.importer;
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2
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3 import java.math.BigDecimal;
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4
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5 import java.util.Comparator;
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6
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7 public class ValueKey
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8 {
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9 public static final double EPSILON = 1e-6;
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10
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11 public static final Comparator<ValueKey> EPSILON_COMPARATOR =
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12 new Comparator<ValueKey>()
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13 {
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14 public int compare(ValueKey x, ValueKey y) {
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15 int cmp = ValueKey.compare(x.a, y.a);
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16 if (cmp != 0) return cmp;
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17 return ValueKey.compare(x.b, y.b);
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18 }
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19 };
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20
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21 public static int compare(BigDecimal a, BigDecimal b) {
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22 if (a == null && b == null) return 0;
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23 if (a != null && b == null) return +1;
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24 if (a == null && b != null) return -1;
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25
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26 double diff = a.doubleValue() - b.doubleValue();
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27 if (diff < -EPSILON) return -1;
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28 return diff > EPSILON ? +1 : 0;
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29 }
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30
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31 protected BigDecimal a;
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32 protected BigDecimal b;
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33
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34 public ValueKey() {
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35 }
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36
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37 public ValueKey(BigDecimal a, BigDecimal b) {
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38 this.a = a;
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39 this.b = b;
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40 }
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41
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42 @Override
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43 public int hashCode() {
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44 return ((a != null ? a.hashCode() : 0) << 16)
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45 | (b != null ? b.hashCode() : 0);
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46 }
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47
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48 @Override
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49 public boolean equals(Object other) {
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50 if (!(other instanceof ValueKey)) {
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51 return false;
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52 }
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53 ValueKey o = (ValueKey)other;
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54 return !(
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55 (a == null && o.a != null)
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56 || (a != null && o.a == null)
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57 || (a != null && !a.equals(o.a))
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58 || (b == null && o.b != null)
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59 || (b != null && o.b == null)
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60 || (b != null && !b.equals(o.b)));
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61 }
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62 }
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63 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org