Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/CollectionMonitor.java @ 7434:505b05e223b1

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Experimental patch: Do not run datacage on artifacts that are loaded from datacage. His hopefully minimizes the datacage runs when a lot of data is loaded.
author Sascha L. Teichmann <teichmann@intevation.de>
date Fri, 25 Oct 2013 03:47:04 +0200
parents af13ceeba52a
children f16dce7a2407
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
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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.artifacts;
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10
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11 import java.util.HashMap;
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12 import java.util.List;
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13 import java.util.Map;
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14
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15 import javax.xml.xpath.XPathConstants;
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16
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17 import org.w3c.dom.Document;
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18 import org.w3c.dom.Element;
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19 import org.w3c.dom.Node;
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20
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21 import org.dive4elements.artifacts.Artifact;
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22 import org.dive4elements.artifacts.ArtifactNamespaceContext;
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23 import org.dive4elements.artifacts.CallContext;
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24 import org.dive4elements.artifacts.Hook;
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25
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26 import org.dive4elements.artifacts.common.utils.XMLUtils;
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27 import org.dive4elements.artifacts.common.utils.XMLUtils.ElementCreator;
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28
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29 import org.dive4elements.artifactdatabase.state.Output;
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30
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31 import org.dive4elements.river.artifacts.datacage.Recommendations;
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32
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33 /** Monitors collection changes. */
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34 public class CollectionMonitor implements Hook {
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35
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36 public static final String XPATH_RESULT = "/art:result";
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37
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38
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39 @Override
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40 public void setup(Node cfg) {
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41 }
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42
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43
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44 @Override
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45 public void execute(Artifact artifact, CallContext context, Document doc) {
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46 D4EArtifact flys = (D4EArtifact) artifact;
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47
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48 // Do not generate recommendations for a loaded artifact.
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49 String out = flys.getBoundToOut();
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50 if (out != null && !out.isEmpty()) {
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51 return;
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52 }
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53
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54 Element result = (Element) XMLUtils.xpath(
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55 doc,
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56 XPATH_RESULT,
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57 XPathConstants.NODE,
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58 ArtifactNamespaceContext.INSTANCE);
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59
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60 ElementCreator creator = new ElementCreator(
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61 doc,
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62 ArtifactNamespaceContext.NAMESPACE_URI,
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63 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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64
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65 Element recommended = creator.create("recommended-artifacts");
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66 result.appendChild(recommended);
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67
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68 String[] outs = extractOutputNames(flys, context);
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69 Map<String, Object> params = getNoneUserSpecificParameters(flys, context);
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70
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71 Recommendations rec = Recommendations.getInstance();
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72
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73 // TODO For newer official-lines recommendations we actually
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74 // need user-id (null here).
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75 rec.recommend(flys, null, outs, params, recommended);
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76 }
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77
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78
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79 /**
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80 * Get outputnames from current state (only the ones for which
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81 * facets exist).
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82 */
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83 public static String[] extractOutputNames(
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84 D4EArtifact flys,
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85 CallContext context)
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86 {
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87 if (flys instanceof ChartArtifact) {
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88 return new String[0];
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89 }
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90
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91 List<Output> outs = flys.getCurrentOutputs(context);
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92
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93 int num = outs == null ? 0 : outs.size();
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94
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95 String[] names = new String[num];
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96
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97 for (int i = 0; i < num; i++) {
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98 names[i] = outs.get(i).getName();
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99 }
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100
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101 return names;
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102 }
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103
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104
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105 /**
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106 * Creates Map from Strings "recommended" to "true".
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107 */
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108 protected Map<String, Object> getNoneUserSpecificParameters(
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109 D4EArtifact flys,
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110 CallContext context)
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111 {
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112 Map<String, Object> params = new HashMap<String, Object>(1);
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113 params.put("recommended", "true");
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114
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115 return params;
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116 }
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117 }
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118 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org