Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/importer/ImportRange.java @ 500:d50cd3a632e0

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Importer: Use BigDecimals in hashing to prevent numerical problems. Cache ranges globally, too. flys-backend/trunk@1854 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 08 May 2011 22:41:07 +0000
parents cce054f27dac
children 2c99995395f5
rev   line source
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1 package de.intevation.flys.importer;
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2
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3 import de.intevation.flys.model.Range;
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4 import de.intevation.flys.model.River;
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5
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6 import java.math.BigDecimal;
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7
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8 import org.apache.log4j.Logger;
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9
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10 public class ImportRange
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11 implements Comparable<ImportRange>
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12 {
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13 private static Logger log = Logger.getLogger(ImportRange.class);
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14
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15 protected BigDecimal a;
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16 protected BigDecimal b;
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17
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18 protected Range peer;
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19
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20 public ImportRange() {
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21 }
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22
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23 public ImportRange(BigDecimal a, BigDecimal b) {
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24 this.a = a;
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25 this.b = b;
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26 }
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27
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28 private static final int compare(BigDecimal a, BigDecimal b) {
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29 if (a == null && b == null) {
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30 return 0;
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31 }
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32 if (a == null && b != null) {
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33 return -1;
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34 }
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35 if (a != null && b == null) {
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36 return +1;
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37 }
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38 return a.compareTo(b);
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39 }
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40
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41 public int compareTo(ImportRange other) {
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42 int cmp = compare(a, other.a);
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43 if (cmp != 0) return cmp;
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44 return compare(b, other.b);
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45 }
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46
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47 public BigDecimal getA() {
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48 return a;
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49 }
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51 public void setA(BigDecimal a) {
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52 this.a = a;
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53 }
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54
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55 public BigDecimal getB() {
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56 return b;
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57 }
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58
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59 public void setB(BigDecimal b) {
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60 this.b = b;
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61 }
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62
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63 public Range getPeer(River river) {
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64 if (peer == null) {
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65 peer = ImporterSession.getInstance().getRange(river, a, b);
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66 }
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67 return peer;
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68 }
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69 }
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70 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org