Mercurial > dive4elements > river
annotate 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 |
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children | ea3a438a7021 |
rev | line source |
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1 package de.intevation.flys.artifacts.model; |
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2 |
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3 import java.util.List; |
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4 import java.util.ArrayList; |
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5 |
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6 import de.intevation.flys.backend.SessionFactoryProvider; |
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7 |
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8 import de.intevation.flys.model.River; |
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9 import de.intevation.flys.model.Gauge; |
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10 import de.intevation.flys.model.Range; |
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11 |
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12 import org.hibernate.SessionFactory; |
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13 import org.hibernate.Session; |
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14 import org.hibernate.Query; |
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15 |
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16 public class GaugesFactory |
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17 { |
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18 public static List<Gauge> getGauges(River river) { |
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19 return getGauges(river.getName()); |
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20 } |
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21 |
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22 public static List<Gauge> getGauges(String river) { |
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23 SessionFactory sf = SessionFactoryProvider.getSessionFactory(); |
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24 Session session = sf.openSession(); |
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25 try { |
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26 Query query = session.createQuery( |
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27 "from Gauge where river.name=:name"); |
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28 query.setParameter("name", river); |
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29 return query.list(); |
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30 } |
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31 finally { |
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32 session.close(); |
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33 } |
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34 } |
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35 |
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36 public static List<Gauge> filterRanges( |
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37 List<Gauge> gauges, |
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38 List<double []> ranges |
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39 ) { |
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40 // XXX: Inefficent! |
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41 ArrayList<Range> rs = new ArrayList<Range>(); |
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42 for (double [] range: ranges) { |
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43 double a = range[0]; |
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44 double b = range[1]; |
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45 rs.add(new Range(Math.min(a, b), Math.max(a, b), null)); |
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46 } |
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47 return filter(gauges, rs); |
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48 } |
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49 |
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50 public static List<Gauge> filter(List<Gauge> gauges, List<Range> ranges) { |
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51 // TODO: Make it an HQL filter! |
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52 ArrayList<Gauge> out = new ArrayList<Gauge>(); |
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53 for (Gauge gauge: gauges) { |
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54 Range range = gauge.getRange(); |
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55 for (Range cmp: ranges) { |
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56 if (range.intersects(cmp)) { |
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57 out.add(gauge); |
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58 break; |
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59 } |
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60 } |
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61 } |
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62 return out; |
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63 } |
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64 } |
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65 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |