Mercurial > dive4elements > river
comparison backend/src/main/java/org/dive4elements/river/importer/ImportRange.java @ 7730:e1b831fe435a slt-simplify-cross-sections
Merged default into slt-simplify-cross-sections branch and updated package and class names.
| author | Tom Gottfried <tom@intevation.de> |
|---|---|
| date | Mon, 20 Jan 2014 14:04:20 +0100 |
| parents | 4b26fd60105f |
| children | 9d2e69f971f5 |
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| 5084:ca45dd039b54 | 7730:e1b831fe435a |
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| 1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde | |
| 2 * Software engineering by Intevation GmbH | |
| 3 * | |
| 4 * This file is Free Software under the GNU AGPL (>=v3) | |
| 5 * and comes with ABSOLUTELY NO WARRANTY! Check out the | |
| 6 * documentation coming with Dive4Elements River for details. | |
| 7 */ | |
| 8 | |
| 9 package org.dive4elements.river.importer; | |
| 10 | |
| 11 import org.dive4elements.river.model.Range; | |
| 12 import org.dive4elements.river.model.River; | |
| 13 | |
| 14 import java.math.BigDecimal; | |
| 15 | |
| 16 import org.apache.log4j.Logger; | |
| 17 | |
| 18 /** A range that is about to be imported. */ | |
| 19 public class ImportRange | |
| 20 implements Comparable<ImportRange> | |
| 21 { | |
| 22 /** Private logger. */ | |
| 23 private static Logger log = Logger.getLogger(ImportRange.class); | |
| 24 | |
| 25 protected BigDecimal a; | |
| 26 protected BigDecimal b; | |
| 27 | |
| 28 protected Range peer; | |
| 29 | |
| 30 public ImportRange() { | |
| 31 } | |
| 32 | |
| 33 public ImportRange(BigDecimal a, BigDecimal b) { | |
| 34 | |
| 35 // enforce a<b and set only a for zero-length ranges | |
| 36 if (a != null && b == null) { | |
| 37 this.a = a; | |
| 38 this.b = null; | |
| 39 } | |
| 40 else if (a == null && b != null) { | |
| 41 this.a = b; | |
| 42 this.b = null; | |
| 43 } | |
| 44 else if (a == null && b == null) { | |
| 45 throw new IllegalArgumentException("Both a and b are null."); | |
| 46 } | |
| 47 else if (a == b) { | |
| 48 this.a = a; | |
| 49 this.b = null; | |
| 50 } | |
| 51 else { | |
| 52 if (a.compareTo(b) > 0) { | |
| 53 BigDecimal t = a; a = b; b = t; | |
| 54 } | |
| 55 this.a = a; | |
| 56 this.b = b; | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 private static final int compare(BigDecimal a, BigDecimal b) { | |
| 61 if (a == null && b == null) { | |
| 62 return 0; | |
| 63 } | |
| 64 if (a == null && b != null) { | |
| 65 return -1; | |
| 66 } | |
| 67 if (a != null && b == null) { | |
| 68 return +1; | |
| 69 } | |
| 70 return a.compareTo(b); | |
| 71 } | |
| 72 | |
| 73 public int compareTo(ImportRange other) { | |
| 74 int cmp = compare(a, other.a); | |
| 75 if (cmp != 0) return cmp; | |
| 76 return compare(b, other.b); | |
| 77 } | |
| 78 | |
| 79 public BigDecimal getA() { | |
| 80 return a; | |
| 81 } | |
| 82 | |
| 83 public void setA(BigDecimal a) { | |
| 84 if (this.b != null && a.compareTo(b) >= 0) { | |
| 85 throw new IllegalArgumentException("a (" + a + ") must be smaller than b (" + b + ")."); | |
| 86 } | |
| 87 this.a = a; | |
| 88 } | |
| 89 | |
| 90 public BigDecimal getB() { | |
| 91 return b; | |
| 92 } | |
| 93 | |
| 94 public void setB(BigDecimal b) { | |
| 95 if (b != null && b.compareTo(a) <= 0) { | |
| 96 throw new IllegalArgumentException("b (" + b + ") must be greater than a (" + a + ") or null."); | |
| 97 } | |
| 98 this.b = b; | |
| 99 } | |
| 100 | |
| 101 public Range getPeer(River river) { | |
| 102 if (peer == null) { | |
| 103 peer = ImporterSession.getInstance().getRange(river, a, b); | |
| 104 } | |
| 105 return peer; | |
| 106 } | |
| 107 } | |
| 108 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |