Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/CollectionMonitor.java @ 5430:ba489a16f4d8

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Datacage Function Resolver: Lift from static to object space.
author Sascha L. Teichmann <teichmann@intevation.de>
date Tue, 26 Mar 2013 16:16:12 +0100
parents a929d9a9fa1e
children
rev   line source
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1 package de.intevation.flys.artifacts;
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2
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3 import java.util.HashMap;
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4 import java.util.List;
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5 import java.util.Map;
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6
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7 import javax.xml.xpath.XPathConstants;
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8
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9 import org.w3c.dom.Document;
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10 import org.w3c.dom.Element;
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11 import org.w3c.dom.Node;
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12
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13 import de.intevation.artifacts.Artifact;
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14 import de.intevation.artifacts.ArtifactNamespaceContext;
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15 import de.intevation.artifacts.CallContext;
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16 import de.intevation.artifacts.Hook;
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17
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18 import de.intevation.artifacts.common.utils.XMLUtils;
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19 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator;
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20
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21 import de.intevation.artifactdatabase.state.Output;
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22
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23 import de.intevation.flys.artifacts.datacage.Recommendations;
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24
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25 /** Monitors collection changes. */
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26 public class CollectionMonitor implements Hook {
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27
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28 public static final String XPATH_RESULT = "/art:result";
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30
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31 @Override
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32 public void setup(Node cfg) {
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33 }
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34
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35
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36 @Override
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37 public void execute(Artifact artifact, CallContext context, Document doc) {
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38 FLYSArtifact flys = (FLYSArtifact) artifact;
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39
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40 Element result = (Element) XMLUtils.xpath(
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41 doc,
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42 XPATH_RESULT,
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43 XPathConstants.NODE,
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44 ArtifactNamespaceContext.INSTANCE);
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45
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46 ElementCreator creator = new ElementCreator(
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47 doc,
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48 ArtifactNamespaceContext.NAMESPACE_URI,
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49 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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50
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51 Element recommended = creator.create("recommended-artifacts");
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52 result.appendChild(recommended);
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53
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54 String[] outs = extractOutputNames(flys, context);
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55 Map<String, Object> params = getNoneUserSpecificParameters(flys, context);
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56
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57 Recommendations rec = Recommendations.getInstance();
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58
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59 // TODO For newer official-lines recommendations we actually
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60 // need user-id (null here).
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61 rec.recommend(flys, null, outs, params, recommended);
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62 }
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63
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64
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65 /**
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66 * Get outputnames from current state (only the ones for which
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67 * facets exist).
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68 */
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69 public static String[] extractOutputNames(
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70 FLYSArtifact flys,
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71 CallContext context)
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72 {
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73 if (flys instanceof ChartArtifact) {
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74 return new String[0];
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75 }
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76
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77 List<Output> outs = flys.getCurrentOutputs(context);
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78
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79 int num = outs == null ? 0 : outs.size();
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80
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81 String[] names = new String[num];
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82
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83 for (int i = 0; i < num; i++) {
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84 names[i] = outs.get(i).getName();
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85 }
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86
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87 return names;
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88 }
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89
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90
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91 /**
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92 * Creates Map from Strings "recommended" to "true".
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93 */
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94 protected Map<String, Object> getNoneUserSpecificParameters(
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95 FLYSArtifact flys,
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96 CallContext context)
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97 {
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98 Map<String, Object> params = new HashMap<String, Object>(1);
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99 params.put("recommended", "true");
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100
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101 return params;
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102 }
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103 }
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104 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org