Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/exports/fixings/FixChartGenerator.java @ 9556:9b8e8fc1f408

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Use facetName in all processors as themeType for legend aggregation.
author gernotbelger
date Tue, 23 Oct 2018 16:26:58 +0200
parents ae9dee74e43e
children
rev   line source
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4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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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.exports.fixings;
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10
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11 import org.dive4elements.artifacts.ArtifactNamespaceContext;
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12 import org.dive4elements.artifacts.CallContext;
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13 import org.dive4elements.artifacts.common.utils.XMLUtils;
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14 import org.dive4elements.river.exports.XYChartGenerator;
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15
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16 import java.io.OutputStream;
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17
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18 import org.apache.log4j.Logger;
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19 import org.w3c.dom.Document;
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20
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21 /**
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22 * Base class for FixChartGenerator.
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23 */
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24 public abstract class FixChartGenerator
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25 extends XYChartGenerator
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26 {
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27 /** Private log. */
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28 private static Logger log = Logger.getLogger(FixChartGenerator.class);
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29
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30 public static final Double INVALID_KM = Double.valueOf(-1d);
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31 public static final String CURRENT_KM = "currentKm";
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32 public static final String XPATH_CHART_CURRENTKM =
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33 "/art:action/art:attributes/art:currentKm/@art:km";
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34
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35 @Override
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36 public void init(
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37 String outName,
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38 Document request,
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39 OutputStream out,
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40 CallContext context
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41 ) {
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42 super.init(outName, request, out, context);
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43
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44 initCurrentKm(request, context);
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45 }
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46
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47 public static final Double getCurrentKmFromRequest(Document request) {
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48
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49 String km = XMLUtils.xpathString(
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50 request,
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51 XPATH_CHART_CURRENTKM,
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52 ArtifactNamespaceContext.INSTANCE);
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53
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54 if (km == null) {
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55 return INVALID_KM;
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56 }
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57
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58 try {
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59 return Double.valueOf(km);
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60 }
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61 catch (NumberFormatException nfe) {
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62 return INVALID_KM;
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63 }
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64 }
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65
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66 /**
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67 * Returns the current km from the context.
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68 * If the context is null or doesn't contain a currentKm
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69 * then a double value of -1 will be returned.
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70 *
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71 * @param context
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72 * The CallContext instance
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73 * @return the current km as double
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74 */
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75 // FIXME: copied from org.dive4elements.river.artifacts.model.fixings.FixingsFacet
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76 public static final double getCurrentKm(final CallContext context) {
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77 if (context == null)
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78 return Double.NaN;
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79
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80 final Double dkm = (Double) context.getContextValue(CURRENT_KM);
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81 if (dkm == null)
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82 return Double.NaN;
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83
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84 return dkm.doubleValue();
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85 }
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86
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87 public static void initCurrentKm(Document request, CallContext context) {
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88
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89 Double currentKm = getCurrentKmFromRequest(request);
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90
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91 if (log.isDebugEnabled()) {
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92 log.debug("currentKm = " + currentKm);
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93 }
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94
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95 if (currentKm != INVALID_KM) {
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96 context.putContextValue(CURRENT_KM, currentKm);
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97 }
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98 }
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99 }
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100 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org