--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-client/src/main/java/org/dive4elements/river/client/server/UserCollectionsServiceImpl.java	Thu Apr 25 12:31:32 2013 +0200
@@ -0,0 +1,121 @@
+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.isEmpty() && !ttlStr.isEmpty() && !creationStr.isEmpty()) {
+            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 :