Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/utils/KMIndex.java @ 3625:f2a5fe968b98

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
issue814 line labels always visible. flys-artifacts/trunk@5319 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Thu, 30 Aug 2012 14:51:48 +0000
parents 0e8929d5e9e3
children 46511b4d8357
rev   line source
3013
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
1 package de.intevation.flys.utils;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
2
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
3 import java.util.ArrayList;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
4 import java.util.Collections;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
5 import java.util.List;
3026
65b6e27c6f25 FixA: Use new data structures in Delta W(t) exporter. Removed obsolete code.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3013
diff changeset
6 import java.util.Iterator;
3013
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
7
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
8 import java.io.Serializable;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
9
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
10 public class KMIndex<A>
3026
65b6e27c6f25 FixA: Use new data structures in Delta W(t) exporter. Removed obsolete code.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3013
diff changeset
11 implements Serializable, Iterable<KMIndex.Entry<A>>
3013
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
12 {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
13 public static final double EPSILON = 1e-4;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
14
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
15 public static class Entry<A>
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
16 implements Serializable, Comparable<Entry<A>>
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
17 {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
18 protected double km;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
19 protected A value;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
20
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
21 public Entry(double km) {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
22 this.km = km;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
23 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
24
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
25 public Entry(double km, A value) {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
26 this.km = km;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
27 this.value = value;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
28 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
29
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
30 public double getKm() {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
31 return km;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
32 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
33
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
34 public A getValue() {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
35 return value;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
36 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
37
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
38 public void setValue(A value) {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
39 this.value = value;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
40 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
41
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
42 @Override
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
43 public int compareTo(Entry<A> other) {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
44 double diff = km - other.km;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
45 if (diff < -EPSILON) return -1;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
46 if (diff > +EPSILON) return +1;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
47 return 0;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
48 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
49
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
50 public boolean epsilonEquals(double km) {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
51 return Math.abs(this.km - km) < EPSILON;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
52 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
53 } // class Entry
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
54
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
55
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
56 protected List<Entry<A>> entries;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
57
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
58 public KMIndex() {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
59 this(10);
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
60 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
61
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
62 public KMIndex(int capacity) {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
63 entries = new ArrayList<Entry<A>>(capacity);
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
64 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
65
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
66 public void add(double km, A value) {
3158
0e8929d5e9e3 Use generics more correctly
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3026
diff changeset
67 entries.add(new Entry<A>(km, value));
3013
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
68 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
69
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
70 public void sort() {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
71 Collections.sort(entries);
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
72 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
73
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
74 public Entry<A> search(double km) {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
75 for (Entry<A> entry: entries) {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
76 if (entry.epsilonEquals(km)) {
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
77 return entry;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
78 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
79 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
80 return null;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
81 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
82
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
83 public Entry<A> binarySearch(double km) {
3158
0e8929d5e9e3 Use generics more correctly
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3026
diff changeset
84 int index = Collections.binarySearch(entries, new Entry<A>(km));
3013
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
85 return index >= 0 ? entries.get(index) : null;
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
86 }
3026
65b6e27c6f25 FixA: Use new data structures in Delta W(t) exporter. Removed obsolete code.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3013
diff changeset
87
65b6e27c6f25 FixA: Use new data structures in Delta W(t) exporter. Removed obsolete code.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3013
diff changeset
88 public Iterator<Entry<A>> iterator() {
65b6e27c6f25 FixA: Use new data structures in Delta W(t) exporter. Removed obsolete code.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3013
diff changeset
89 return entries.iterator();
65b6e27c6f25 FixA: Use new data structures in Delta W(t) exporter. Removed obsolete code.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3013
diff changeset
90 }
3013
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
91 }
ba62c1751f07 FixA: Added new serializable km inedx structure.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
92 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org