Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/RiverInfoService.java @ 4873:2b371e42a9af

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Add HWS Lines parameters and ogr_connection example
author Andre Heinecke <aheinecke@intevation.de>
date Fri, 25 Jan 2013 10:34:47 +0100
parents 5da024c2af62
children
rev   line source
4247
5da024c2af62 Refactor GaugeOverviewInfoService and MeasurementStationInfoService
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1 package de.intevation.flys.artifacts.services;
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2
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3 import java.math.BigDecimal;
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4
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5 import org.apache.log4j.Logger;
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6
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7 import org.w3c.dom.Document;
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8 import org.w3c.dom.Element;
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9
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10 import de.intevation.artifacts.CallMeta;
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11 import de.intevation.artifacts.GlobalContext;
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12 import de.intevation.artifacts.common.ArtifactNamespaceContext;
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13 import de.intevation.artifacts.common.utils.XMLUtils;
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14
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15 import de.intevation.flys.artifacts.model.RiverFactory;
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16 import de.intevation.flys.model.River;
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17
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18 /**
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19 * @author <a href="mailto:bjoern.ricks@intevation.de">Björn Ricks</a>
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20 */
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21 public class RiverInfoService extends FLYSService {
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22
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23 private static final Logger logger = Logger.getLogger(
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24 RiverInfoService.class);
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25
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26 protected static final String RIVER_XPATH = "/art:river/text()";
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27
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28 protected XMLUtils.ElementCreator ec;
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29 protected River river;
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30 protected Element riverele;
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31
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32 protected Document doProcess(
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33 Document data,
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34 GlobalContext globalContext,
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35 CallMeta callMeta
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36 ) {
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37 String rivername = XMLUtils.xpathString(
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38 data, RIVER_XPATH, ArtifactNamespaceContext.INSTANCE);
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39
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40 river = RiverFactory.getRiver(rivername);
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41
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42 Document result = XMLUtils.newDocument();
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43
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44 if (river == null) {
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45 logger.warn("No river with name " + rivername + " found.");
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46 return null;
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47 }
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48
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49 ec = new XMLUtils.ElementCreator(
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50 result,
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51 ArtifactNamespaceContext.NAMESPACE_URI,
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52 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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53
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54 riverele = ec.create("river-info");
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55
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56 double[] minmax = river.determineMinMaxDistance();
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57 double[] minmaxq = river.determineMinMaxQ();
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58
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59 Element r = ec.create("river");
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60 ec.addAttr(r, "name", river.getName(), true);
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61 ec.addAttr(r, "start", Double.toString(minmax[0]), true);
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62 ec.addAttr(r, "end", Double.toString(minmax[1]), true);
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63 ec.addAttr(r, "wstunit", river.getWstUnit().getName(), true);
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64 ec.addAttr(r, "kmup", Boolean.toString(river.getKmUp()), true);
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65 ec.addAttr(r, "minq", Double.toString(minmaxq[0]), true);
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66 ec.addAttr(r, "maxq", Double.toString(minmaxq[1]), true);
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67 ec.addAttr(r, "official", Long.toString(river.getOfficialNumber()),
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68 true);
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69
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70 riverele.appendChild(r);
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71 result.appendChild(riverele);
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72
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73 return result;
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74 }
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75
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76 /**
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77 * Returns a Double as String from a BigDecimal value.
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78 *
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79 * If value is null an empty String is returned.
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80 */
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81 protected static String getStringValue(BigDecimal value) {
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82 return value != null
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83 ? Double.toString(value.doubleValue()) : "";
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84 }
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85 }
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