Mercurial > dive4elements > river
annotate backend/src/main/java/org/dive4elements/river/importer/ValueKey.java @ 6203:a3fb76cf79b6 double-precision
backout backout as it is now safely in a branch
author | Tom Gottfried <tom.gottfried@intevation.de> |
---|---|
date | Wed, 05 Jun 2013 11:56:38 +0200 |
parents | 4c3ccf2b0304 |
children |
rev | line source |
---|---|
5844
4dd33b86dc61
Added header to river backend.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
5838
diff
changeset
|
1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
4dd33b86dc61
Added header to river backend.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
5838
diff
changeset
|
2 * Software engineering by Intevation GmbH |
4dd33b86dc61
Added header to river backend.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
5838
diff
changeset
|
3 * |
5992
4c3ccf2b0304
Removed trailing whitespace.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
5844
diff
changeset
|
4 * This file is Free Software under the GNU AGPL (>=v3) |
5844
4dd33b86dc61
Added header to river backend.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
5838
diff
changeset
|
5 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
5992
4c3ccf2b0304
Removed trailing whitespace.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
5844
diff
changeset
|
6 * documentation coming with Dive4Elements River for details. |
5844
4dd33b86dc61
Added header to river backend.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
5838
diff
changeset
|
7 */ |
4dd33b86dc61
Added header to river backend.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
5838
diff
changeset
|
8 |
5829
18619c1e7c2a
Repaired internal references.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
5828
diff
changeset
|
9 package org.dive4elements.river.importer; |
501
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
10 |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
11 import java.math.BigDecimal; |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
12 |
503
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
13 import java.util.Comparator; |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
14 |
501
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
15 public class ValueKey |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
16 { |
503
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
17 public static final double EPSILON = 1e-6; |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
18 |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
19 public static final Comparator<ValueKey> EPSILON_COMPARATOR = |
771
6dc847194625
Removed trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
503
diff
changeset
|
20 new Comparator<ValueKey>() |
503
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
21 { |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
22 public int compare(ValueKey x, ValueKey y) { |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
23 int cmp = ValueKey.compare(x.a, y.a); |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
24 if (cmp != 0) return cmp; |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
25 return ValueKey.compare(x.b, y.b); |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
26 } |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
27 }; |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
28 |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
29 public static int compare(BigDecimal a, BigDecimal b) { |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
30 if (a == null && b == null) return 0; |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
31 if (a != null && b == null) return +1; |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
32 if (a == null && b != null) return -1; |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
33 |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
34 double diff = a.doubleValue() - b.doubleValue(); |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
35 if (diff < -EPSILON) return -1; |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
36 return diff > EPSILON ? +1 : 0; |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
37 } |
bcc18293a547
Importer: Added unsharp lookup to avoid numerical problems.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
501
diff
changeset
|
38 |
501
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
39 protected BigDecimal a; |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
40 protected BigDecimal b; |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
41 |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
42 public ValueKey() { |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
43 } |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
44 |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
45 public ValueKey(BigDecimal a, BigDecimal b) { |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
46 this.a = a; |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
47 this.b = b; |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
48 } |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
49 |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
50 @Override |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
51 public int hashCode() { |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
52 return ((a != null ? a.hashCode() : 0) << 16) |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
53 | (b != null ? b.hashCode() : 0); |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
54 } |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
55 |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
56 @Override |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
57 public boolean equals(Object other) { |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
58 if (!(other instanceof ValueKey)) { |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
59 return false; |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
60 } |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
61 ValueKey o = (ValueKey)other; |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
62 return !( |
771
6dc847194625
Removed trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
503
diff
changeset
|
63 (a == null && o.a != null) |
6dc847194625
Removed trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
503
diff
changeset
|
64 || (a != null && o.a == null) |
6dc847194625
Removed trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
503
diff
changeset
|
65 || (a != null && !a.equals(o.a)) |
6dc847194625
Removed trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
503
diff
changeset
|
66 || (b == null && o.b != null) |
501
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
67 || (b != null && o.b == null) |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
68 || (b != null && !b.equals(o.b))); |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
69 } |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
70 } |
04d449f7f0c9
Importer: Change caching strategy not to cause OOM any more.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
71 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |