Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/RiverInfoService.java @ 4655:cd44d28d0fbc

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Move the access to artifact data to the Access object Use BedHeightAccess class to receive the data from the artifact. This abstracts the data access from the actual artifact.
author Björn Ricks <bjoern.ricks@intevation.de>
date Tue, 11 Dec 2012 09:44:04 +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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