Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/features/XMLFileFeatures.java @ 3994:cc0b31dc2789
fix issue898 (crash when no param selected for parametermatrix).
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Mon, 01 Oct 2012 09:39:26 +0200 |
parents | 5f628a13ca9f |
children | 02cf2b1dff84 |
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package de.intevation.flys.client.server.features; import java.io.FileInputStream; import java.io.IOException; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; 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 Map<String, List<String>> featuremap = new HashMap<String, List<String>>(); private final static String XPATH_FEATURES = "ftr:feature/child::text()"; private final static String XPATH_ROLES = "/ftr:features/ftr:role"; public XMLFileFeatures(String filename) throws IOException { FileInputStream finput = new FileInputStream(filename); try { Document doc = XMLUtils.parseDocument(finput); NodeList roles = (NodeList) XMLUtils.xpath( doc, XPATH_ROLES, XPathConstants.NODESET, FeaturesNamespaceContext.INSTANCE); for(int i = 0, m = roles.getLength(); i < m; i++) { Element rolenode = (Element)roles.item(i); String name = rolenode.getAttribute("name"); logger.debug("Found role: " + name); NodeList features = (NodeList) XMLUtils.xpath( rolenode, XPATH_FEATURES, XPathConstants.NODESET, FeaturesNamespaceContext.INSTANCE); if (features == null) { continue; } int N = features.getLength(); if (N > 0) { List<String> allowed = new ArrayList<String>(N); for (int j = 0; j < N; 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"); } finally { finput.close(); } } @Override public List<String> getFeatures(List<String> roles) { List<String> features = new ArrayList<String>(); for (String role: roles) { List<String> allowed = this.featuremap.get(role); if (allowed != null) { features.addAll(allowed); } } return features; } }