Mercurial > dive4elements > river
comparison flys-client/src/main/java/de/intevation/flys/client/server/features/XMLFileFeatures.java @ 3476:4a6321dd5186
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 |
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| 3475:9b29facddbd1 | 3476:4a6321dd5186 |
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| 1 package de.intevation.flys.client.server.features; | |
| 2 | |
| 3 import java.io.FileInputStream; | |
| 4 import java.io.IOException; | |
| 5 | |
| 6 import java.util.Hashtable; | |
| 7 import java.util.List; | |
| 8 import java.util.LinkedList; | |
| 9 | |
| 10 import javax.xml.xpath.XPathConstants; | |
| 11 | |
| 12 import org.apache.log4j.Logger; | |
| 13 | |
| 14 import org.w3c.dom.Document; | |
| 15 import org.w3c.dom.Element; | |
| 16 import org.w3c.dom.Node; | |
| 17 import org.w3c.dom.NodeList; | |
| 18 | |
| 19 import de.intevation.artifacts.common.utils.XMLUtils; | |
| 20 | |
| 21 public class XMLFileFeatures implements Features { | |
| 22 | |
| 23 private static final Logger logger = Logger.getLogger(XMLFileFeatures.class); | |
| 24 | |
| 25 private Hashtable<String, List<String>> featuremap = new Hashtable<String, List<String>>(); | |
| 26 | |
| 27 public XMLFileFeatures(String filename) throws IOException { | |
| 28 FileInputStream finput = new FileInputStream(filename); | |
| 29 Document doc = XMLUtils.parseDocument(finput); | |
| 30 | |
| 31 String XPATH_FEATURES = "ftr:feature/child::text()"; | |
| 32 String XPATH_ROLES = "/ftr:features/ftr:role"; | |
| 33 | |
| 34 NodeList roles = (NodeList) XMLUtils.xpath( | |
| 35 doc, | |
| 36 XPATH_ROLES, | |
| 37 XPathConstants.NODESET, | |
| 38 FeaturesNamespaceContext.INSTANCE); | |
| 39 | |
| 40 for(int i=0; i < roles.getLength(); i++) { | |
| 41 Node rolenode = roles.item(i); | |
| 42 | |
| 43 String name = XMLUtils.xpathString( | |
| 44 rolenode, "@name", FeaturesNamespaceContext.INSTANCE); | |
| 45 | |
| 46 logger.debug("Found role: " + name); | |
| 47 | |
| 48 NodeList features = (NodeList) XMLUtils.xpath( | |
| 49 rolenode, | |
| 50 XPATH_FEATURES, | |
| 51 XPathConstants.NODESET, | |
| 52 FeaturesNamespaceContext.INSTANCE); | |
| 53 | |
| 54 if (features.getLength() > 0) { | |
| 55 List<String> allowed = new LinkedList<String>(); | |
| 56 for (int j=0; j < features.getLength(); j++) { | |
| 57 Node featurenode = features.item(j); | |
| 58 String featurename = featurenode.getNodeValue(); | |
| 59 | |
| 60 logger.debug("found feature: " + featurename); | |
| 61 | |
| 62 allowed.add(featurename); | |
| 63 } | |
| 64 featuremap.put(name, allowed); | |
| 65 } | |
| 66 } | |
| 67 logger.debug("Loaded all features"); | |
| 68 | |
| 69 finput.close(); | |
| 70 } | |
| 71 | |
| 72 @Override | |
| 73 public List<String> getFeatures(List<String> roles) { | |
| 74 List<String> features = new LinkedList<String>(); | |
| 75 | |
| 76 for (String role: roles) { | |
| 77 List<String> allowed = this.featuremap.get(role); | |
| 78 if (!allowed.isEmpty()) { | |
| 79 features.addAll(allowed); | |
| 80 } | |
| 81 } | |
| 82 return features; | |
| 83 } | |
| 84 } |