Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/exports/injector/KmFromRequestInjector.java @ 9801:1d7a72a50183 3.2.x tip

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Assume Compose V2, consistently
author Tom Gottfried <tom@intevation.de>
date Thu, 23 Nov 2023 10:14:13 +0100
parents 0a5239a1e46e
children
rev   line source
8858
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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.injector;
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10
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11 import org.apache.logging.log4j.Logger;
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12 import org.apache.logging.log4j.LogManager;
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13 import org.dive4elements.artifacts.Artifact;
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14 import org.dive4elements.artifacts.ArtifactNamespaceContext;
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15 import org.dive4elements.artifacts.CallContext;
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16 import org.dive4elements.artifacts.ContextInjector;
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17 import org.dive4elements.artifacts.common.utils.XMLUtils;
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18 import org.dive4elements.river.artifacts.D4EArtifact;
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19 import org.dive4elements.river.artifacts.access.RangeAccess;
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20 import org.w3c.dom.Document;
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21 import org.w3c.dom.Element;
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22
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23 import static org.dive4elements.river.exports.injector.InjectorConstants.CURRENT_KM;
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24
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25
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26 public class KmFromRequestInjector
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27 implements ContextInjector
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28 {
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29 private static final Logger log = LogManager.getLogger(
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30 KmFromRequestInjector.class);
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31
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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 @Override
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35 public void setup(Element cfg) {
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36
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37 }
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38
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39 @Override
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40 public void injectContext(
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41 CallContext ctx,
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42 Artifact artifact,
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43 Document request
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44 ) {
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45 if (ctx.getContextValue(CURRENT_KM) instanceof Number) {
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46 return;
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47 }
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48
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49 Double km = getCurrentKmFromRequest(request);
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50 if (Double.isNaN(km)) {
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51 RangeAccess access = new RangeAccess((D4EArtifact)artifact);
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52 km = access.getFrom();
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53 }
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54 ctx.putContextValue(CURRENT_KM, km);
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55 }
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56
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57 private Double getCurrentKmFromRequest(Document request) {
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58
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59 String km = XMLUtils.xpathString(
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60 request,
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61 XPATH_CHART_CURRENTKM,
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62 ArtifactNamespaceContext.INSTANCE);
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63
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64 if (km == null) {
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65 return Double.NaN;
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66 }
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67
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68 try {
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69 return Double.valueOf(km);
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70 }
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71 catch (NumberFormatException nfe) {
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72 return Double.NaN;
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73 }
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74 }
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75 }
http://dive4elements.wald.intevation.org