# HG changeset patch
# User Ingo Weinzierl <ingo.weinzierl@intevation.de>
# Date 1301406544 0
# Node ID 261a2ee7d9bba59b5970be95d4760e00fff279db
# Parent  e2abb6b9dc7e7b869bf94229cb2d7113496cc7c3
Added a service that returns the collections of a specified user.

flys-client/trunk@1609 c6561f87-3c4e-4783-a992-168aeb5c3f6f

diff -r e2abb6b9dc7e -r 261a2ee7d9bb flys-client/ChangeLog
--- a/flys-client/ChangeLog	Tue Mar 29 13:44:53 2011 +0000
+++ b/flys-client/ChangeLog	Tue Mar 29 13:49:04 2011 +0000
@@ -1,3 +1,13 @@
+2011-03-29  Ingo Weinzierl <ingo@intevation.de>
+
+	* src/main/java/de/intevation/flys/client/server/UserCollectionsServiceImpl.java,
+	  src/main/java/de/intevation/flys/client/client/services/UserCollectionsServiceAsync.java,
+	  src/main/java/de/intevation/flys/client/client/services/UserCollectionsService.java:
+	  New. This service returns a list of Collections owned by a specified
+	  user.
+
+	* src/main/webapp/WEB-INF/web.xml: Registered the UserCollectionsService.
+
 2011-03-29  Ingo Weinzierl <ingo@intevation.de>
 
 	* src/main/java/de/intevation/flys/client/shared/model/DefaultCollection.java,
diff -r e2abb6b9dc7e -r 261a2ee7d9bb flys-client/src/main/java/de/intevation/flys/client/client/services/UserCollectionsService.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/client/services/UserCollectionsService.java	Tue Mar 29 13:49:04 2011 +0000
@@ -0,0 +1,27 @@
+package de.intevation.flys.client.client.services;
+
+import com.google.gwt.user.client.rpc.RemoteService;
+import com.google.gwt.user.client.rpc.RemoteServiceRelativePath;
+
+import de.intevation.flys.client.shared.model.Collection;
+
+
+/**
+ * This interface describes a method that retrieves a list of Collections owned
+ * by a specified user.
+ *
+ * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
+ */
+@RemoteServiceRelativePath("user-collections")
+public interface UserCollectionsService extends RemoteService {
+
+    /**
+     * This method retrieves the user that is currently logged in.
+     *
+     * @param serverUrl The url of the artifact server.
+     *
+     * @return the current {@link User}.
+     */
+    Collection[] getUserCollections(String serverUrl, String userid);
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
diff -r e2abb6b9dc7e -r 261a2ee7d9bb flys-client/src/main/java/de/intevation/flys/client/client/services/UserCollectionsServiceAsync.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/client/services/UserCollectionsServiceAsync.java	Tue Mar 29 13:49:04 2011 +0000
@@ -0,0 +1,21 @@
+package de.intevation.flys.client.client.services;
+
+import com.google.gwt.user.client.rpc.AsyncCallback;
+
+import de.intevation.flys.client.shared.model.Collection;
+
+
+/**
+ * This interface describes a method that retrieves a list of Collections owned
+ * by a specified user.
+ *
+ * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
+ */
+public interface UserCollectionsServiceAsync {
+
+    void getUserCollections(
+        String serverUrl,
+        String userid,
+        AsyncCallback<Collection[]> callback);
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
diff -r e2abb6b9dc7e -r 261a2ee7d9bb flys-client/src/main/java/de/intevation/flys/client/server/UserCollectionsServiceImpl.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/server/UserCollectionsServiceImpl.java	Tue Mar 29 13:49:04 2011 +0000
@@ -0,0 +1,109 @@
+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.Node;
+import org.w3c.dom.NodeList;
+
+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
+{
+    public Collection[] getUserCollections(String serverUrl, String userid) {
+        System.out.println("UserCollectionsServiceImpl.getUserCollections");
+
+        HttpClient client = new HttpClientImpl(serverUrl);
+
+        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) {
+                System.out.println("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(list.item(i));
+
+                if (c != null) {
+                    all.add(c);
+                }
+            }
+
+            System.out.println("User has " + all.size() + " collections.");
+
+            return (Collection[]) all.toArray(new Collection[all.size()]);
+        }
+        catch (ConnectionException ce) {
+            System.err.println(ce.getLocalizedMessage());
+        }
+
+        System.err.println("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(Node node) {
+        String creationStr = XMLUtils.xpathString(
+            node, "@art:creation", ArtifactNamespaceContext.INSTANCE);
+
+        String name = XMLUtils.xpathString(
+            node, "@art:name", ArtifactNamespaceContext.INSTANCE);
+
+        String uuid = XMLUtils.xpathString(
+            node, "@art:uuid", ArtifactNamespaceContext.INSTANCE);
+
+        if (uuid != null) {
+            long time = Long.parseLong(creationStr);
+            return new DefaultCollection(uuid, name, new Date(time));
+        }
+
+        System.err.println("Found an invalid Collection.");
+        return null;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :