Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/GaugeDischargeCurveArtifact.java @ 4154:92021091b03d

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Avoid another possible NullPointerException in GaugeTree
author Björn Ricks <bjoern.ricks@intevation.de>
date Tue, 16 Oct 2012 14:42:51 +0200
parents 46c1210be26b
children bbae306fcb4f 1755a1bfe5ce
rev   line source
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1 package de.intevation.flys.artifacts;
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2
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3 import java.util.ArrayList;
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4 import java.util.List;
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5
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6 import org.apache.log4j.Logger;
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7
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8 import org.w3c.dom.Document;
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9
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10 import de.intevation.artifactdatabase.state.DefaultOutput;
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11 import de.intevation.artifactdatabase.state.Facet;
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12 import de.intevation.artifactdatabase.data.DefaultStateData;
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13
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14 import de.intevation.artifacts.ArtifactFactory;
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15 import de.intevation.artifacts.CallMeta;
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16
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17 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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18 import de.intevation.artifacts.common.utils.XMLUtils;
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19
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20 import de.intevation.flys.artifacts.model.GaugeDischargeCurveFacet;
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21 import de.intevation.flys.artifacts.resources.Resources;
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22 import de.intevation.flys.artifacts.states.StaticState;
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23
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24 import de.intevation.flys.model.Gauge;
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25 import de.intevation.flys.utils.FLYSUtils;
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26
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27
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28 /**
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29 * Artifact to calculate a discharge curve from a gauge overview info
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30 *
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31 * @author <a href="mailto:bjoern.ricks@intevation.de">Björn Ricks</a>
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32 */
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33 public class GaugeDischargeCurveArtifact
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34 extends AbstractStaticStateArtifact
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35 {
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36
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37 private static final Logger logger =
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38 Logger.getLogger(GaugeDischargeCurveArtifact.class);
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39
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40 public static final String XPATH_RIVER = "/art:action/art:river/@art:name";
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41 public static final String XPATH_GAUGE = "/art:action/art:gauge/@art:reference";
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42 public static final String NAME = "gaugedischargecurve";
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43 public static final String STATIC_STATE_NAME = "state.gaugedischargecurve.static";
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44
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45 /**
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46 * Setup initializes the data by extracting the river and gauge from
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47 * the XML Document.
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48 */
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49 @Override
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50 public void setup(
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51 String identifier,
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52 ArtifactFactory factory,
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53 Object context,
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54 CallMeta callmeta,
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55 Document data)
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56 {
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57 logger.debug("GaugeDischargeCurveArtifact.setup");
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58
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59 if (logger.isDebugEnabled()) {
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60 logger.debug("GaugeDischargeCurveArtifact.setup" + XMLUtils.toString(data));
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61 }
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62 String gaugeref = XMLUtils.xpathString(data, XPATH_GAUGE,
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63 ArtifactNamespaceContext.INSTANCE);
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64 String rivername = XMLUtils.xpathString(data, XPATH_RIVER,
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65 ArtifactNamespaceContext.INSTANCE);
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66
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67 addData("river", new DefaultStateData("river",
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68 Resources.getMsg(callmeta,
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69 "facet.gauge_discharge_curve.river",
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70 "Name of the river"),
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71 "String", rivername));
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72 addData("reference_gauge", new DefaultStateData("reference_gauge",
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73 Resources.getMsg(callmeta,
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74 "facet.gauge_discharge_curve.reference_gauge",
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75 "Gauge official number"),
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76 "Double", gaugeref));
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77
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78 Gauge gauge = FLYSUtils.getReferenceGauge(this);
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79 String gaugename = "";
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80 if (gauge != null) {
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81 gaugename = gauge.getName();
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82 }
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83
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84 String description = Resources.format(callmeta,
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85 "facet.gauge_discharge_curve.description",
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86 "Discharge curve on gauge",
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87 rivername,
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88 gaugename);
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89
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90 Facet gfacet = new GaugeDischargeCurveFacet(description);
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91
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92 List<Facet> fs = new ArrayList<Facet>(1);
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93 fs.add(gfacet);
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94
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95 addFacets(STATIC_STATE_NAME, fs);
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96
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97 super.setup(identifier, factory, context, callmeta, data);
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98 }
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99
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100 @Override
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101 public String getName() {
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102 return NAME;
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103 }
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104
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105 @Override
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106 protected void initStaticState() {
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107 StaticState state = new StaticState(STATIC_STATE_NAME);
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108 List<Facet> fs = facets.get(STATIC_STATE_NAME);
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109 DefaultOutput output = new DefaultOutput(
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110 "discharge_curve",
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111 "output.discharge_curve", "image/png",
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112 fs,
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113 "chart");
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114
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115 state.addOutput(output);
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116 setStaticState(state);
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117 }
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118 }
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