Mercurial > dive4elements > river
diff 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> |
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date | Wed, 08 Aug 2012 12:51:18 +0000 |
parents | |
children | e59588ea27bd |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-client/src/main/java/de/intevation/flys/client/server/features/XMLFileFeatures.java Wed Aug 08 12:51:18 2012 +0000 @@ -0,0 +1,84 @@ +package de.intevation.flys.client.server.features; + +import java.io.FileInputStream; +import java.io.IOException; + +import java.util.Hashtable; +import java.util.List; +import java.util.LinkedList; + +import javax.xml.xpath.XPathConstants; + +import org.apache.log4j.Logger; + +import org.w3c.dom.Document; +import org.w3c.dom.Element; +import org.w3c.dom.Node; +import org.w3c.dom.NodeList; + +import de.intevation.artifacts.common.utils.XMLUtils; + +public class XMLFileFeatures implements Features { + + private static final Logger logger = Logger.getLogger(XMLFileFeatures.class); + + private Hashtable<String, List<String>> featuremap = new Hashtable<String, List<String>>(); + + public XMLFileFeatures(String filename) throws IOException { + FileInputStream finput = new FileInputStream(filename); + Document doc = XMLUtils.parseDocument(finput); + + String XPATH_FEATURES = "ftr:feature/child::text()"; + String XPATH_ROLES = "/ftr:features/ftr:role"; + + NodeList roles = (NodeList) XMLUtils.xpath( + doc, + XPATH_ROLES, + XPathConstants.NODESET, + FeaturesNamespaceContext.INSTANCE); + + for(int i=0; i < roles.getLength(); i++) { + Node rolenode = roles.item(i); + + String name = XMLUtils.xpathString( + rolenode, "@name", FeaturesNamespaceContext.INSTANCE); + + logger.debug("Found role: " + name); + + NodeList features = (NodeList) XMLUtils.xpath( + rolenode, + XPATH_FEATURES, + XPathConstants.NODESET, + FeaturesNamespaceContext.INSTANCE); + + if (features.getLength() > 0) { + List<String> allowed = new LinkedList<String>(); + for (int j=0; j < features.getLength(); j++) { + Node featurenode = features.item(j); + String featurename = featurenode.getNodeValue(); + + logger.debug("found feature: " + featurename); + + allowed.add(featurename); + } + featuremap.put(name, allowed); + } + } + logger.debug("Loaded all features"); + + finput.close(); + } + + @Override + public List<String> getFeatures(List<String> roles) { + List<String> features = new LinkedList<String>(); + + for (String role: roles) { + List<String> allowed = this.featuremap.get(role); + if (!allowed.isEmpty()) { + features.addAll(allowed); + } + } + return features; + } +}