Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/UserCollectionsServiceImpl.java @ 4247:5da024c2af62
Refactor GaugeOverviewInfoService and MeasurementStationInfoService
Refactor RiverInfoService out of GaugeOverviewInfoService and
MeasurementStationInfoService to share common code of both classes in a base
class.
author | Björn Ricks <bjoern.ricks@intevation.de> |
---|---|
date | Wed, 24 Oct 2012 16:36:59 +0200 |
parents | 0de61fc9d281 |
children | 523cd27b4c42 |
line wrap: on
line source
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 :