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> |
|---|---|
| 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 : |