Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/states/RangeState.java @ 1946:a584a26d5fde

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Introduce pre-rendering inter-facet communication phase ('blackboard pass'). flys-artifacts/trunk@3336 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Wed, 30 Nov 2011 10:18:38 +0000
parents 022f62c75878
children 1358d0c8481c
rev   line source
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448d0dc64357 The inserted ranges (distance and WQ ranges) are validated in the feed() operation.
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1 package de.intevation.flys.artifacts.states;
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2
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3 import org.apache.log4j.Logger;
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4
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5 import de.intevation.artifacts.Artifact;
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6
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7 import de.intevation.artifactdatabase.data.StateData;
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8
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9 import de.intevation.flys.artifacts.FLYSArtifact;
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10
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11
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12 /**
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13 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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14 */
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15 public abstract class RangeState extends DefaultState {
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16
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17 /** The logger that is used in this class. */
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18 private Logger logger = Logger.getLogger(RangeState.class);
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20
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21 public RangeState() {
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22 }
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23
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24
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25 protected abstract String getLowerField();
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26 protected abstract String getUpperField();
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27 protected abstract String getStepField();
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28 protected abstract double[] getMinMax(Artifact artifact);
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29
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30
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31 protected boolean validateBounds(
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32 double fromValid, double toValid,
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33 double from, double to)
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34 throws IllegalArgumentException
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35 {
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36 if (from < fromValid) {
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37 logger.error(
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38 "Invalid 'from'. " + from + " is smaller than " + fromValid);
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39 throw new IllegalArgumentException("error_feed_from_out_of_range");
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40 }
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41 else if (to > toValid) {
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42 logger.error(
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43 "Invalid 'to'. " + to + " is bigger than " + toValid);
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44 throw new IllegalArgumentException("error_feed_to_out_of_range");
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45 }
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46
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47 return true;
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48 }
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51 /**
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52 * Validates a given range with a given valid range.
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53 *
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54 * @param fromValid Valid lower value of the range.
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55 * @param toValid Valid upper value of the range.
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56 * @param from The lower value.
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57 * @param to The upper value.
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58 * @param step The step width.
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59 *
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60 * @return true, if everything was fine, otherwise an exception is thrown.
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61 */
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62 protected boolean validateBounds(
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63 double fromValid, double toValid,
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64 double from, double to, double step)
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65 throws IllegalArgumentException
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66 {
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67 logger.debug("RangeState.validateRange");
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68
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69 // XXX The step width is not validated at the moment!
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70 return validateBounds(fromValid, toValid, from, to);
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71 }
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72
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73
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74 @Override
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75 public boolean validate(Artifact artifact)
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76 throws IllegalArgumentException
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77 {
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78 FLYSArtifact flys = (FLYSArtifact) artifact;
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79
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80 StateData dFrom = getData(flys, getLowerField());
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81 StateData dTo = getData(flys, getUpperField());
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82 StateData dStep = getData(flys, getStepField());
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83
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84 String fromStr = dFrom != null ? (String) dFrom.getValue() : null;
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85 String toStr = dTo != null ? (String) dTo.getValue() : null;
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86 String stepStr = dStep != null ? (String) dStep.getValue() : null;
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87
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88 if (fromStr == null || toStr == null || stepStr == null) {
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89 throw new IllegalArgumentException("error_empty_state");
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90 }
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91
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92 try {
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93 double from = Double.parseDouble(fromStr);
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94 double to = Double.parseDouble(toStr);
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95 double step = Double.parseDouble(stepStr);
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96
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97 double[] minmax = getMinMax(flys);
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98
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99 return validateBounds(minmax[0], minmax[1], from, to, step);
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100 }
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101 catch (NumberFormatException nfe) {
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102 throw new IllegalArgumentException("error_invalid_double_value");
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103 }
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104 }
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105 }
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106 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org