Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/GaugesFactory.java @ 151:4eddbb219866
Add factory to fetch gauges from database and filter them
for their ranges. XXX: Coded inefficent.
flys-artifacts/trunk@1581 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Mon, 28 Mar 2011 09:17:25 +0000 |
parents | |
children | ea3a438a7021 |
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150:c904d52cdfd0 | 151:4eddbb219866 |
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1 package de.intevation.flys.artifacts.model; | |
2 | |
3 import java.util.List; | |
4 import java.util.ArrayList; | |
5 | |
6 import de.intevation.flys.backend.SessionFactoryProvider; | |
7 | |
8 import de.intevation.flys.model.River; | |
9 import de.intevation.flys.model.Gauge; | |
10 import de.intevation.flys.model.Range; | |
11 | |
12 import org.hibernate.SessionFactory; | |
13 import org.hibernate.Session; | |
14 import org.hibernate.Query; | |
15 | |
16 public class GaugesFactory | |
17 { | |
18 public static List<Gauge> getGauges(River river) { | |
19 return getGauges(river.getName()); | |
20 } | |
21 | |
22 public static List<Gauge> getGauges(String river) { | |
23 SessionFactory sf = SessionFactoryProvider.getSessionFactory(); | |
24 Session session = sf.openSession(); | |
25 try { | |
26 Query query = session.createQuery( | |
27 "from Gauge where river.name=:name"); | |
28 query.setParameter("name", river); | |
29 return query.list(); | |
30 } | |
31 finally { | |
32 session.close(); | |
33 } | |
34 } | |
35 | |
36 public static List<Gauge> filterRanges( | |
37 List<Gauge> gauges, | |
38 List<double []> ranges | |
39 ) { | |
40 // XXX: Inefficent! | |
41 ArrayList<Range> rs = new ArrayList<Range>(); | |
42 for (double [] range: ranges) { | |
43 double a = range[0]; | |
44 double b = range[1]; | |
45 rs.add(new Range(Math.min(a, b), Math.max(a, b), null)); | |
46 } | |
47 return filter(gauges, rs); | |
48 } | |
49 | |
50 public static List<Gauge> filter(List<Gauge> gauges, List<Range> ranges) { | |
51 // TODO: Make it an HQL filter! | |
52 ArrayList<Gauge> out = new ArrayList<Gauge>(); | |
53 for (Gauge gauge: gauges) { | |
54 Range range = gauge.getRange(); | |
55 for (Range cmp: ranges) { | |
56 if (range.intersects(cmp)) { | |
57 out.add(gauge); | |
58 break; | |
59 } | |
60 } | |
61 } | |
62 return out; | |
63 } | |
64 } | |
65 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |