Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/exports/injector/KmFromGaugeNumberInjector.java @ 8367:16dc2da05aef

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Overwriting the current km in context gives unexpected results if artifacts from different km have been loaded.
author Tom Gottfried <tom@intevation.de>
date Thu, 02 Oct 2014 11:46:44 +0200
parents 7341bebc79d0
children a805211690f7
rev   line source
8251
c7ca9c228314 Added context injectors for discharge curves.
Raimund Renkert <rrenkert@intevation.de>
parents:
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1 package org.dive4elements.river.exports.injector;
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2
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3 import org.apache.log4j.Logger;
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4 import org.dive4elements.artifacts.Artifact;
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5 import org.dive4elements.artifacts.CallContext;
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6 import org.dive4elements.artifacts.ContextInjector;
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7 import org.dive4elements.river.artifacts.D4EArtifact;
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8 import org.dive4elements.river.artifacts.access.HistoricalDischargeAccess;
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9 import org.dive4elements.river.model.Gauge;
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10 import org.w3c.dom.Document;
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11 import org.w3c.dom.Element;
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12
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13 import static org.dive4elements.river.exports.injector.InjectorConstants.CURRENT_KM;
c7ca9c228314 Added context injectors for discharge curves.
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14
8349
7341bebc79d0 Let injectors be strictly distinct from each other and give more meaningful names (they know what they do, not where they will be used. The latter is configuration).
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15 public class KmFromGaugeNumberInjector
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16 implements ContextInjector
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17 {
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18 private static Logger log =
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parents: 8255
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19 Logger.getLogger(KmFromGaugeNumberInjector.class);
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20
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21 @Override
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22 public void setup(Element cfg) {
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23
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24 }
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25
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26 @Override
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27 public void injectContext(
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28 CallContext ctx,
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29 Artifact artifact,
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30 Document request
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31 ) {
8367
16dc2da05aef Overwriting the current km in context gives unexpected results if artifacts from different km have been loaded.
Tom Gottfried <tom@intevation.de>
parents: 8349
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32 if (ctx.getContextValue(CURRENT_KM) instanceof Number) {
16dc2da05aef Overwriting the current km in context gives unexpected results if artifacts from different km have been loaded.
Tom Gottfried <tom@intevation.de>
parents: 8349
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33 return;
16dc2da05aef Overwriting the current km in context gives unexpected results if artifacts from different km have been loaded.
Tom Gottfried <tom@intevation.de>
parents: 8349
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34 }
16dc2da05aef Overwriting the current km in context gives unexpected results if artifacts from different km have been loaded.
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parents: 8349
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35
8251
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36 HistoricalDischargeAccess access =
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37 new HistoricalDischargeAccess((D4EArtifact)artifact);
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38 Long gaugeNumber = access.getOfficialGaugeNumber();
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39 if (gaugeNumber == null) {
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40 return;
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41 }
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42 Gauge gauge = Gauge.getGaugeByOfficialNumber(gaugeNumber);
c7ca9c228314 Added context injectors for discharge curves.
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43 if (gauge == null) {
c7ca9c228314 Added context injectors for discharge curves.
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44 return;
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45 }
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46 double km = gauge.getStation().doubleValue();
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47 ctx.putContextValue(CURRENT_KM, km);
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48 }
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49 }
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