Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/exports/injector/KmFromRequestInjector.java @ 8858:a805211690f7 3.2.x
Fix license headers.
author | Tom Gottfried <tom@intevation.de> |
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date | Thu, 18 Jan 2018 20:52:41 +0100 |
parents | 5e38e2924c07 |
children | 0a5239a1e46e |
rev | line source |
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8858 | 1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
2 * Software engineering by Intevation GmbH | |
3 * | |
4 * This file is Free Software under the GNU AGPL (>=v3) | |
5 * and comes with ABSOLUTELY NO WARRANTY! Check out the | |
6 * documentation coming with Dive4Elements River for details. | |
7 */ | |
8 | |
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9 package org.dive4elements.river.exports.injector; |
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10 |
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11 import org.apache.log4j.Logger; |
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12 import org.dive4elements.artifacts.Artifact; |
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13 import org.dive4elements.artifacts.ArtifactNamespaceContext; |
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14 import org.dive4elements.artifacts.CallContext; |
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15 import org.dive4elements.artifacts.ContextInjector; |
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16 import org.dive4elements.artifacts.common.utils.XMLUtils; |
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17 import org.dive4elements.river.artifacts.D4EArtifact; |
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18 import org.dive4elements.river.artifacts.access.RangeAccess; |
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19 import org.w3c.dom.Document; |
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20 import org.w3c.dom.Element; |
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21 |
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22 import static org.dive4elements.river.exports.injector.InjectorConstants.CURRENT_KM; |
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23 |
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24 |
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25 public class KmFromRequestInjector |
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26 implements ContextInjector |
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27 { |
8856 | 28 private static final Logger log = Logger.getLogger( |
29 KmFromRequestInjector.class); | |
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30 |
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31 public static final String XPATH_CHART_CURRENTKM = |
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32 "/art:action/art:attributes/art:currentKm/@art:km"; |
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33 @Override |
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34 public void setup(Element cfg) { |
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35 |
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36 } |
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37 |
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38 @Override |
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39 public void injectContext( |
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40 CallContext ctx, |
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41 Artifact artifact, |
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42 Document request |
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43 ) { |
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44 if (ctx.getContextValue(CURRENT_KM) instanceof Number) { |
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45 return; |
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46 } |
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47 |
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48 Double km = getCurrentKmFromRequest(request); |
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49 if (Double.isNaN(km)) { |
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50 RangeAccess access = new RangeAccess((D4EArtifact)artifact); |
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51 km = access.getFrom(); |
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52 } |
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53 ctx.putContextValue(CURRENT_KM, km); |
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54 } |
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55 |
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56 private Double getCurrentKmFromRequest(Document request) { |
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57 |
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58 String km = XMLUtils.xpathString( |
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59 request, |
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60 XPATH_CHART_CURRENTKM, |
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61 ArtifactNamespaceContext.INSTANCE); |
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62 |
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63 if (km == null) { |
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64 return Double.NaN; |
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65 } |
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66 |
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67 try { |
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68 return Double.valueOf(km); |
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69 } |
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70 catch (NumberFormatException nfe) { |
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71 return Double.NaN; |
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72 } |
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73 } |
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74 } |