Mercurial > dive4elements > river
comparison flys-client/src/main/java/org/dive4elements/river/client/server/UserCollectionsServiceImpl.java @ 5834:f507086aa94b
Repaired internal references.
| author | Sascha L. Teichmann <teichmann@intevation.de> |
|---|---|
| date | Thu, 25 Apr 2013 12:31:32 +0200 |
| parents | flys-client/src/main/java/de/intevation/flys/client/server/UserCollectionsServiceImpl.java@d35a0bc153fa |
| children | 821a02bbfb4e |
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| 5833:a2bdc0f524e8 | 5834:f507086aa94b |
|---|---|
| 1 package de.intevation.flys.client.server; | |
| 2 | |
| 3 import java.util.ArrayList; | |
| 4 import java.util.Date; | |
| 5 import java.util.List; | |
| 6 | |
| 7 import javax.xml.xpath.XPathConstants; | |
| 8 | |
| 9 import org.w3c.dom.Document; | |
| 10 import org.w3c.dom.Element; | |
| 11 import org.w3c.dom.NodeList; | |
| 12 | |
| 13 import org.apache.log4j.Logger; | |
| 14 | |
| 15 import com.google.gwt.user.server.rpc.RemoteServiceServlet; | |
| 16 | |
| 17 import de.intevation.artifacts.common.ArtifactNamespaceContext; | |
| 18 import de.intevation.artifacts.common.utils.XMLUtils; | |
| 19 | |
| 20 import de.intevation.artifacts.httpclient.exceptions.ConnectionException; | |
| 21 import de.intevation.artifacts.httpclient.http.HttpClient; | |
| 22 import de.intevation.artifacts.httpclient.http.HttpClientImpl; | |
| 23 | |
| 24 import de.intevation.flys.client.shared.model.Collection; | |
| 25 import de.intevation.flys.client.shared.model.DefaultCollection; | |
| 26 import de.intevation.flys.client.client.services.UserCollectionsService; | |
| 27 | |
| 28 | |
| 29 /** | |
| 30 * This service returns a list of collections owned by a specified user. | |
| 31 * <b>NOTE:</b> The Collections returned by this service provide no information | |
| 32 * about the CollectionItems or OutputModes of the Collection. You need to fetch | |
| 33 * these information explicitly using another service. | |
| 34 * | |
| 35 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
| 36 */ | |
| 37 public class UserCollectionsServiceImpl | |
| 38 extends RemoteServiceServlet | |
| 39 implements UserCollectionsService | |
| 40 { | |
| 41 private static final Logger logger = Logger.getLogger( | |
| 42 UserCollectionsServiceImpl.class); | |
| 43 | |
| 44 | |
| 45 public Collection[] getUserCollections(String locale, String userid) { | |
| 46 logger.info("UserCollectionsServiceImpl.getUserCollections"); | |
| 47 | |
| 48 String serverUrl = getServletContext().getInitParameter("server-url"); | |
| 49 HttpClient client = new HttpClientImpl(serverUrl, locale); | |
| 50 | |
| 51 try { | |
| 52 Document result = client.listUserCollections(userid); | |
| 53 | |
| 54 NodeList list = (NodeList) XMLUtils.xpath( | |
| 55 result, | |
| 56 "/art:artifact-collections/art:artifact-collection", | |
| 57 XPathConstants.NODESET, | |
| 58 ArtifactNamespaceContext.INSTANCE); | |
| 59 | |
| 60 if (list == null || list.getLength() == 0) { | |
| 61 logger.debug("No collection found for user: " + userid); | |
| 62 return null; | |
| 63 } | |
| 64 | |
| 65 int num = list.getLength(); | |
| 66 | |
| 67 List<Collection> all = new ArrayList<Collection>(num); | |
| 68 | |
| 69 for (int i = 0; i < num; i++) { | |
| 70 Collection c = createCollection((Element) list.item(i)); | |
| 71 | |
| 72 if (c != null) { | |
| 73 all.add(c); | |
| 74 } | |
| 75 } | |
| 76 | |
| 77 logger.debug("User has " + all.size() + " collections."); | |
| 78 | |
| 79 return all.toArray(new Collection[all.size()]); | |
| 80 } | |
| 81 catch (ConnectionException ce) { | |
| 82 logger.error(ce, ce); | |
| 83 } | |
| 84 | |
| 85 logger.debug("No user collections found."); | |
| 86 return null; | |
| 87 } | |
| 88 | |
| 89 | |
| 90 /** | |
| 91 * Extracts a SimpleCollection from <i>node</i>. | |
| 92 * | |
| 93 * @param node Contains information about a collection. | |
| 94 * | |
| 95 * @return a list of Simplecollections. | |
| 96 */ | |
| 97 protected Collection createCollection(Element node) { | |
| 98 String uri = ArtifactNamespaceContext.NAMESPACE_URI; | |
| 99 | |
| 100 String creationStr = node.getAttributeNS(uri, "creation"); | |
| 101 String name = node.getAttributeNS(uri, "name"); | |
| 102 String uuid = node.getAttributeNS(uri, "uuid"); | |
| 103 String ttlStr = node.getAttributeNS(uri, "ttl"); | |
| 104 | |
| 105 if (!uuid.isEmpty() && !ttlStr.isEmpty() && !creationStr.isEmpty()) { | |
| 106 try { | |
| 107 long time = Long.parseLong(creationStr); | |
| 108 long ttl = Long.parseLong(ttlStr); | |
| 109 return new DefaultCollection(uuid, ttl, name, new Date(time)); | |
| 110 } | |
| 111 catch (NumberFormatException nfe) { | |
| 112 logger.warn("Error while parsing collection attributes."); | |
| 113 return null; | |
| 114 } | |
| 115 } | |
| 116 | |
| 117 logger.warn("Found an invalid Collection."); | |
| 118 return null; | |
| 119 } | |
| 120 } | |
| 121 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |