--- a/flys-client/src/main/java/de/intevation/flys/client/client/FLYS.java	Tue Mar 08 16:20:34 2011 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/client/FLYS.java	Wed Mar 09 08:00:06 2011 +0000
@@ -11,10 +11,13 @@
 import de.intevation.flys.client.shared.model.Artifact;
 import de.intevation.flys.client.shared.model.Collection;
 import de.intevation.flys.client.shared.model.DefaultCollection;
+import de.intevation.flys.client.shared.model.River;
 import de.intevation.flys.client.shared.model.User;
 
 import de.intevation.flys.client.client.services.ArtifactService;
 import de.intevation.flys.client.client.services.ArtifactServiceAsync;
+import de.intevation.flys.client.client.services.RiverService;
+import de.intevation.flys.client.client.services.RiverServiceAsync;
 import de.intevation.flys.client.client.services.UserService;
 import de.intevation.flys.client.client.services.UserServiceAsync;
 import de.intevation.flys.client.client.ui.CollectionView;
@@ -35,6 +38,9 @@
     /** The UserService used to retrieve information about the current user. */
     protected UserServiceAsync userService = GWT.create(UserService.class);
 
+    /** The RiverService used to retrieve the supported rivers of the server.*/
+    protected RiverServiceAsync riverService = GWT.create(RiverService.class);
+
     /** The ArtifactService used to communicate with the Artifact server. */
     protected ArtifactServiceAsync artifactService =
         GWT.create(ArtifactService.class);
@@ -54,6 +60,9 @@
     /** The user who is currently logged in.*/
     protected User currentUser;
 
+    /** The list of rivers supported by the server.*/
+    protected River[] rivers;
+
 
     /**
      * This is the entry point method.
@@ -78,6 +87,8 @@
         initConfiguration();
         String serverUrl = Config.getInstance().getServerUrl();
 
+        getRivers();
+
         userService.getCurrentUser(serverUrl, new AsyncCallback<User>() {
             public void onFailure(Throwable caught) {
                 GWT.log("Could not find a logged in user.");
@@ -136,6 +147,33 @@
 
 
     /**
+     * Returns a list of rivers supported by the artifact server.
+     *
+     * @return a list of rivers supported by the artifact server.
+     */
+    public River[] getRivers() {
+        if (rivers == null) {
+            String url = Config.getInstance().getServerUrl();
+            GWT.log("Fetch rivers from server '" + url + "'");
+
+            riverService.list(url, new AsyncCallback<River[]>() {
+                public void onFailure(Throwable caught) {
+                    GWT.log("Could not recieve a list of rivers.");
+                    GWT.log(caught.getMessage());
+                }
+
+                public void onSuccess(River[] newRivers) {
+                    GWT.log("Retrieved " + newRivers.length + " new rivers.");
+                    rivers = newRivers;
+                }
+            });
+        }
+
+        return rivers;
+    }
+
+
+    /**
      * This method creates a new CollectionView and adds it to the workspace.
      */
     public void newProject() {