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annotate flys-client/src/main/java/de/intevation/flys/client/server/features/XMLFileFeatures.java @ 3482:c64cad8dc772

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Add missing import of ArrayList flys-client/trunk@5177 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Bjoern Ricks <bjoern.ricks@intevation.de>
date Wed, 08 Aug 2012 13:41:58 +0000
parents e59588ea27bd
children 83845aa322ea
rev   line source
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4a6321dd5186 Implement a class representation of features corresponding to roles
Bjoern Ricks <bjoern.ricks@intevation.de>
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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.Hashtable;
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8 import java.util.List;
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9 import java.util.LinkedList;
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10
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11 import javax.xml.xpath.XPathConstants;
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12
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13 import org.apache.log4j.Logger;
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14
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15 import org.w3c.dom.Document;
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16 import org.w3c.dom.Element;
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17 import org.w3c.dom.Node;
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18 import org.w3c.dom.NodeList;
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19
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20 import de.intevation.artifacts.common.utils.XMLUtils;
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21
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22 public class XMLFileFeatures implements Features {
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23
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24 private static final Logger logger = Logger.getLogger(XMLFileFeatures.class);
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25
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26 private Hashtable<String, List<String>> featuremap = new Hashtable<String, List<String>>();
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27
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28 private final static String XPATH_FEATURES = "ftr:feature/child::text()";
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29 private final static String XPATH_ROLES = "/ftr:features/ftr:role";
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30
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31 public XMLFileFeatures(String filename) throws IOException {
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32 FileInputStream finput = new FileInputStream(filename);
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33
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34 try {
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35 Document doc = XMLUtils.parseDocument(finput);
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36
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37 NodeList roles = (NodeList) XMLUtils.xpath(
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38 doc,
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39 XPATH_ROLES,
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40 XPathConstants.NODESET,
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41 FeaturesNamespaceContext.INSTANCE);
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42
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43 for(int i=0, m = roles.getLength(); i < m; i++) {
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44 Element rolenode = (Element)roles.item(i);
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45
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46 String name = rolenode.getAttributeNS(
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47 FeaturesNamespaceContext.NAMESPACE_URI, "name");
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48
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49 logger.debug("Found role: " + name);
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50
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51 NodeList features = (NodeList) XMLUtils.xpath(
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52 rolenode,
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53 XPATH_FEATURES,
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54 XPathConstants.NODESET,
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55 FeaturesNamespaceContext.INSTANCE);
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56
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57 if (features.getLength() > 0) {
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58 List<String> allowed = new ArrayList<String>(features.getLength());
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59 for (int j=0, l = features.getLength(); j < l; j++) {
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60 Node featurenode = features.item(j);
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61 String featurename = featurenode.getNodeValue();
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62
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63 logger.debug("Found feature: " + featurename);
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64
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65 allowed.add(featurename);
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66 }
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67 featuremap.put(name, allowed);
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68 }
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69 }
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70 logger.debug("Loaded all features");
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71 }
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72 finally {
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73 finput.close();
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74 }
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75 }
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76
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77 @Override
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78 public List<String> getFeatures(List<String> roles) {
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79 List<String> features = new LinkedList<String>();
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80
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81 for (String role: roles) {
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82 List<String> allowed = this.featuremap.get(role);
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83 if (!allowed.isEmpty()) {
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84 features.addAll(allowed);
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85 }
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86 }
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87 return features;
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88 }
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89 }
http://dive4elements.wald.intevation.org