Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/collections/OutputParser.java @ 940:f4439e015278

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Append artifact recommendations to the artifact's describe document. flys-artifacts/trunk@2334 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 14 Jul 2011 15:30:55 +0000
parents 9ff7e06bcb77
children c256061287d7
rev   line source
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1 package de.intevation.flys.collections;
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2
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3 import java.util.HashMap;
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4 import java.util.Map;
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5
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6 import javax.xml.xpath.XPathConstants;
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7
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8 import org.apache.log4j.Logger;
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9
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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 import org.w3c.dom.Node;
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13 import org.w3c.dom.NodeList;
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14
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15 import de.intevation.artifacts.ArtifactDatabase;
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16 import de.intevation.artifacts.ArtifactDatabaseException;
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17 import de.intevation.artifacts.ArtifactNamespaceContext;
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18 import de.intevation.artifacts.CallMeta;
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19
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20 import de.intevation.artifactdatabase.state.DefaultOutput;
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21 import de.intevation.artifactdatabase.state.Output;
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22
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23 import de.intevation.artifacts.common.utils.XMLUtils;
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24
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25 import de.intevation.flys.artifacts.model.ManagedFacet;
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27
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28 public class OutputParser {
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29
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30 /** Constant XPath that points to the outputmodes of an artifact.*/
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31 public static final String XPATH_ARTIFACT_OUTPUTMODES =
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32 "/art:result/art:outputmodes/art:output";
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34
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35 private static Logger logger = Logger.getLogger(OutputParser.class);
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36
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37 protected ArtifactDatabase db;
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38 protected CallMeta meta;
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39
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40 protected Map<String, Output> outs;
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43 public OutputParser(ArtifactDatabase db, CallMeta meta) {
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44 this.db = db;
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45 this.meta = meta;
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46 this.outs = new HashMap<String, Output>();
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47 }
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49
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50 public void parse(String uuid)
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51 throws ArtifactDatabaseException
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52 {
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53 logger.debug("OutputParser.parse: " + uuid);
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54
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55 // XXX I am not sure if it works well every time with an empty
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56 // document in the describe operation of an artifact.
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57 Document description = db.describe(uuid, null, meta);
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58
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59 NodeList outs = (NodeList) XMLUtils.xpath(
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60 description,
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61 XPATH_ARTIFACT_OUTPUTMODES,
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62 XPathConstants.NODESET,
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63 ArtifactNamespaceContext.INSTANCE);
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64
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65 int num = outs != null ? outs.getLength() : 0;
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66
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67 logger.debug("Artifact has " + num + " outputs.");
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68
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69 for (int i = 0; i < num; i++) {
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70 Element out = (Element)outs.item(i);
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71
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72 parseOutput(uuid, out);
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73 }
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74 }
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77 public Map<String, Output> getOuts() {
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78 return outs;
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79 }
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81
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82 protected void addItem(String out, ManagedFacet item) {
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83 Output o = outs.get(out);
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84
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85 if (o != null) {
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86 int num = o.getFacets().size();
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87 item.setPosition(num+1);
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88
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89 o.addFacet(item);
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90 }
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91 }
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93
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94 protected void parseOutput(String uuid, Element out) {
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95
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96 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
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97
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98 String name = out.getAttributeNS(uri, "name");
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99
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100 if (outs.get(name) == null) {
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101 logger.debug("Create new output: " + name);
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102 newOutput(out, name);
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103 }
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104
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105 parseItems(uuid, out, name);
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106 }
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108
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109 protected void newOutput(Element out, String name) {
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111 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
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112
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113 String desc = out.getAttributeNS(uri, "description");
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114 String mimetype = out.getAttributeNS(uri, "mime-type");
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115 String type = out.getAttributeNS(uri, "type");
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116
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117 Output o = new DefaultOutput(name, desc, mimetype, type);
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118
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119 outs.put(name, o);
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120 }
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122
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123 protected void parseItems(String uuid, Node out, String outname) {
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124 NodeList facets = (NodeList) XMLUtils.xpath(
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125 out, "art:facets/art:facet",
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126 XPathConstants.NODESET,
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127 ArtifactNamespaceContext.INSTANCE);
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128
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129 int num = facets != null ? facets.getLength() : 0;
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130
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131 String uri = ArtifactNamespaceContext.NAMESPACE_URI;
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132
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133 logger.debug("Output has " + num + " facets.");
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134
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135 for (int i = 0; i < num; i++) {
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136 Element facet = (Element) facets.item(i);
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137
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138 String name = facet.getAttributeNS(uri, "name");
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139 String desc = facet.getAttributeNS(uri, "description");
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140 String index = facet.getAttributeNS(uri, "index");
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141
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142 ManagedFacet item = new ManagedFacet(
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143 name, Integer.parseInt(index), desc, uuid, 1, 1);
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144
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145 addItem(outname, item);
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146 }
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147 }
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148 }
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149 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org