Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/UserCollectionsServiceImpl.java @ 3497:88feb3347aa5
Implement a ProxyServlet
Implement a ProxyServlet to be able to restrict the access to the
mapserver too. All queries to the provided map services should go throught
this new ProxyServlet. Currently the ProxyServlet can only handle HTTP GET
requests.
flys-client/trunk@5221 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Bjoern Ricks <bjoern.ricks@intevation.de> |
---|---|
date | Thu, 16 Aug 2012 14:42:36 +0000 |
parents | 0de61fc9d281 |
children | 523cd27b4c42 |
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package de.intevation.flys.client.server; import java.util.ArrayList; import java.util.Date; import java.util.List; import javax.xml.xpath.XPathConstants; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.NodeList; import org.apache.log4j.Logger; import com.google.gwt.user.server.rpc.RemoteServiceServlet; import de.intevation.artifacts.common.ArtifactNamespaceContext; import de.intevation.artifacts.common.utils.XMLUtils; import de.intevation.artifacts.httpclient.exceptions.ConnectionException; import de.intevation.artifacts.httpclient.http.HttpClient; import de.intevation.artifacts.httpclient.http.HttpClientImpl; import de.intevation.flys.client.shared.model.Collection; import de.intevation.flys.client.shared.model.DefaultCollection; import de.intevation.flys.client.client.services.UserCollectionsService; /** * This service returns a list of collections owned by a specified user. * <b>NOTE:</b> The Collections returned by this service provide no information * about the CollectionItems or OutputModes of the Collection. You need to fetch * these information explicitly using another service. * * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class UserCollectionsServiceImpl extends RemoteServiceServlet implements UserCollectionsService { private static final Logger logger = Logger.getLogger( UserCollectionsServiceImpl.class); public Collection[] getUserCollections(String locale, String userid) { logger.info("UserCollectionsServiceImpl.getUserCollections"); String serverUrl = getServletContext().getInitParameter("server-url"); HttpClient client = new HttpClientImpl(serverUrl, locale); try { Document result = client.listUserCollections(userid); NodeList list = (NodeList) XMLUtils.xpath( result, "/art:artifact-collections/art:artifact-collection", XPathConstants.NODESET, ArtifactNamespaceContext.INSTANCE); if (list == null || list.getLength() == 0) { logger.debug("No collection found for user: " + userid); return null; } int num = list.getLength(); List<Collection> all = new ArrayList<Collection>(num); for (int i = 0; i < num; i++) { Collection c = createCollection((Element) list.item(i)); if (c != null) { all.add(c); } } logger.debug("User has " + all.size() + " collections."); return all.toArray(new Collection[all.size()]); } catch (ConnectionException ce) { logger.error(ce, ce); } logger.debug("No user collections found."); return null; } /** * Extracts a SimpleCollection from <i>node</i>. * * @param node Contains information about a collection. * * @return a list of Simplecollections. */ protected Collection createCollection(Element node) { String uri = ArtifactNamespaceContext.NAMESPACE_URI; String creationStr = node.getAttributeNS(uri, "creation"); String name = node.getAttributeNS(uri, "name"); String uuid = node.getAttributeNS(uri, "uuid"); String ttlStr = node.getAttributeNS(uri, "ttl"); if (uuid != null && ttlStr != null) { try { long time = Long.parseLong(creationStr); long ttl = Long.parseLong(ttlStr); return new DefaultCollection(uuid, ttl, name, new Date(time)); } catch (NumberFormatException nfe) { logger.warn("Error while parsing collection attributes."); return null; } } logger.warn("Found an invalid Collection."); return null; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :