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annotate flys-client/src/main/java/de/intevation/flys/client/server/features/XMLFileFeatures.java @ 3476:4a6321dd5186

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Implement a class representation of features corresponding to roles flys-client/trunk@5171 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Bjoern Ricks <bjoern.ricks@intevation.de>
date Wed, 08 Aug 2012 12:51:18 +0000
parents
children e59588ea27bd
rev   line source
3476
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.Hashtable;
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7 import java.util.List;
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8 import java.util.LinkedList;
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9
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10 import javax.xml.xpath.XPathConstants;
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11
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12 import org.apache.log4j.Logger;
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13
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14 import org.w3c.dom.Document;
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15 import org.w3c.dom.Element;
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16 import org.w3c.dom.Node;
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17 import org.w3c.dom.NodeList;
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18
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19 import de.intevation.artifacts.common.utils.XMLUtils;
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20
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21 public class XMLFileFeatures implements Features {
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22
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23 private static final Logger logger = Logger.getLogger(XMLFileFeatures.class);
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24
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25 private Hashtable<String, List<String>> featuremap = new Hashtable<String, List<String>>();
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26
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27 public XMLFileFeatures(String filename) throws IOException {
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28 FileInputStream finput = new FileInputStream(filename);
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29 Document doc = XMLUtils.parseDocument(finput);
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30
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31 String XPATH_FEATURES = "ftr:feature/child::text()";
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32 String XPATH_ROLES = "/ftr:features/ftr:role";
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33
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34 NodeList roles = (NodeList) XMLUtils.xpath(
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35 doc,
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36 XPATH_ROLES,
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37 XPathConstants.NODESET,
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38 FeaturesNamespaceContext.INSTANCE);
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39
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40 for(int i=0; i < roles.getLength(); i++) {
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41 Node rolenode = roles.item(i);
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42
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43 String name = XMLUtils.xpathString(
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44 rolenode, "@name", FeaturesNamespaceContext.INSTANCE);
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45
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46 logger.debug("Found role: " + name);
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47
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48 NodeList features = (NodeList) XMLUtils.xpath(
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49 rolenode,
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50 XPATH_FEATURES,
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51 XPathConstants.NODESET,
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52 FeaturesNamespaceContext.INSTANCE);
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53
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54 if (features.getLength() > 0) {
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55 List<String> allowed = new LinkedList<String>();
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56 for (int j=0; j < features.getLength(); j++) {
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57 Node featurenode = features.item(j);
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58 String featurename = featurenode.getNodeValue();
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59
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60 logger.debug("found feature: " + featurename);
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61
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62 allowed.add(featurename);
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63 }
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64 featuremap.put(name, allowed);
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65 }
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66 }
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67 logger.debug("Loaded all features");
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68
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69 finput.close();
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70 }
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71
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72 @Override
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73 public List<String> getFeatures(List<String> roles) {
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74 List<String> features = new LinkedList<String>();
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75
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76 for (String role: roles) {
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77 List<String> allowed = this.featuremap.get(role);
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78 if (!allowed.isEmpty()) {
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79 features.addAll(allowed);
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80 }
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81 }
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82 return features;
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83 }
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84 }
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