Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/states/sq/StaticSQRelationFacet.java @ 7298:5b2126d21c2e

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Polish SQ Datacage and Facets The starting point is now taken from the blackboard
author Andre Heinecke <aheinecke@intevation.de>
date Fri, 11 Oct 2013 15:35:25 +0200
parents af13ceeba52a
children e4606eae8ea5
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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Sascha L. Teichmann <teichmann@intevation.de>
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.artifacts.states.sq;
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10
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11 import java.util.List;
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12
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13 import org.apache.log4j.Logger;
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14
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15 import org.dive4elements.artifactdatabase.state.DefaultFacet;
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16 import org.dive4elements.artifactdatabase.state.Facet;
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17 import org.dive4elements.artifacts.Artifact;
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18 import org.dive4elements.artifacts.CallContext;
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19 import org.dive4elements.artifacts.DataProvider;
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20 import org.dive4elements.river.artifacts.math.fitting.Function;
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21 import org.dive4elements.river.artifacts.math.fitting.FunctionFactory;
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22 import org.dive4elements.river.artifacts.model.sq.SQFunction;
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23 import org.dive4elements.river.artifacts.model.sq.StaticSQRelation;
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24
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25
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26 public class StaticSQRelationFacet
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27 extends DefaultFacet
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28 implements Facet
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29 {
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30 public static final String FUNCTION = "sq-pow";
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31
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32 private StaticSQRelation relation;
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33
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34 private static final Logger logger =
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35 Logger.getLogger(StaticSQRelationFacet.class);
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36
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37 public StaticSQRelationFacet(
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38 int ndx,
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39 String name,
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40 String description,
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41 StaticSQRelation relation) {
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42 super(ndx, name, description);
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43 this.relation = relation;
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44 }
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45
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46 @Override
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47 public Object getData(Artifact artifact, CallContext context) {
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48 double qmax = relation.getQmax();
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49 double[] coeffs = new double[] {relation.getA(), relation.getB()};
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50 Function func = FunctionFactory.getInstance().getFunction(FUNCTION);
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51 org.dive4elements.river.artifacts.math.Function function =
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52 func.instantiate(coeffs);
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53
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54 /* Figure out a good starting point by checking for calculated
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55 * SQ Curves and using their starting point */
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56
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57 // this is ok because we are a DefaultFacet and not a DataFacet
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58 // and so we are not registred with Mr. Blackboard
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59 List<DataProvider> providers = context.getDataProvider(name);
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60
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61 double startingPoint = Double.MAX_VALUE;
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62
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63 for (DataProvider dp: providers) {
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64 SQFunction other = (SQFunction) dp.provideData(
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65 name,
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66 null,
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67 context);
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68 if (other == null) {
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69 // name is not really unique here but it's our only key
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70 // should not happen anyhow.
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71 logger.error("Did not get data from: " + name);
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72 continue;
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73 }
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74 startingPoint = Math.min(other.getMinQ(), startingPoint);
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75 }
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76 if (startingPoint == Double.MAX_VALUE) {
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77 startingPoint = 0;
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78 }
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79
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80 SQFunction sqf = new SQFunction(function, startingPoint, qmax);
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81 return sqf;
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82 }
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83
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84 @Override
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85 public Facet deepCopy() {
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86 StaticSQRelationFacet copy =
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87 new StaticSQRelationFacet(index, name, description, relation);
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88 copy.set(this);
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89 return copy;
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90 }
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91 }
http://dive4elements.wald.intevation.org