Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/features/XMLFileFeatures.java @ 3484:83845aa322ea

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XMLFileFeatures: Cosmetics. flys-client/trunk@5181 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Thu, 09 Aug 2012 08:22:04 +0000
parents c64cad8dc772
children 3dfe7bbab70f
rev   line source
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1 package de.intevation.flys.client.server.features;
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2
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3 import java.io.FileInputStream;
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4 import java.io.IOException;
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5
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6 import java.util.ArrayList;
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7 import java.util.HashMap;
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8 import java.util.LinkedList;
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9 import java.util.List;
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10 import java.util.Map;
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11
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12 import javax.xml.xpath.XPathConstants;
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13
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14 import org.apache.log4j.Logger;
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15
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16 import org.w3c.dom.Document;
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17 import org.w3c.dom.Element;
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18 import org.w3c.dom.Node;
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19 import org.w3c.dom.NodeList;
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20
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21 import de.intevation.artifacts.common.utils.XMLUtils;
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22
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23 public class XMLFileFeatures implements Features {
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24
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25 private static final Logger logger =
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26 Logger.getLogger(XMLFileFeatures.class);
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27
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28 private Map<String, List<String>> featuremap =
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29 new HashMap<String, List<String>>();
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30
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31 private final static String XPATH_FEATURES = "ftr:feature/child::text()";
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32 private final static String XPATH_ROLES = "/ftr:features/ftr:role";
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33
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34 public XMLFileFeatures(String filename) throws IOException {
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35 FileInputStream finput = new FileInputStream(filename);
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36
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37 try {
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38 Document doc = XMLUtils.parseDocument(finput);
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39
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40 NodeList roles = (NodeList) XMLUtils.xpath(
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41 doc,
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42 XPATH_ROLES,
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43 XPathConstants.NODESET,
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44 FeaturesNamespaceContext.INSTANCE);
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45
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46 for(int i = 0, m = roles.getLength(); i < m; i++) {
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47 Element rolenode = (Element)roles.item(i);
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48
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49 String name = rolenode.getAttributeNS(
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50 FeaturesNamespaceContext.NAMESPACE_URI, "name");
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51
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52 logger.debug("Found role: " + name);
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53
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54 NodeList features = (NodeList) XMLUtils.xpath(
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55 rolenode,
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56 XPATH_FEATURES,
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57 XPathConstants.NODESET,
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58 FeaturesNamespaceContext.INSTANCE);
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59
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60 if (features == null) {
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61 continue;
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62 }
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63
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64 int N = features.getLength();
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65
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66 if (N > 0) {
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67 List<String> allowed = new ArrayList<String>(N);
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68 for (int j = 0; j < N; j++) {
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69 Node featurenode = features.item(j);
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70 String featurename = featurenode.getNodeValue();
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71
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72 logger.debug("Found feature: " + featurename);
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73
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74 allowed.add(featurename);
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75 }
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76 featuremap.put(name, allowed);
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77 }
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78 }
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79 logger.debug("Loaded all features");
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80 }
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81 finally {
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82 finput.close();
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83 }
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84 }
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85
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86 @Override
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87 public List<String> getFeatures(List<String> roles) {
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88 List<String> features = new ArrayList<String>();
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89
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90 for (String role: roles) {
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91 List<String> allowed = this.featuremap.get(role);
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92 if (allowed != null) {
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93 features.addAll(allowed);
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94 }
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95 }
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96 return features;
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97 }
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98 }
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