--- a/flys-client/ChangeLog	Fri Aug 24 11:42:31 2012 +0000
+++ b/flys-client/ChangeLog	Fri Aug 24 14:14:30 2012 +0000
@@ -1,3 +1,9 @@
+2012-08-24	Björn Ricks	<bjoern.ricks@intevation.de>
+
+	* src/main/java/de/intevation/flys/client/server/auth/UserClient.java:
+	  Use new find-user REST interface to check if a user already exists in the
+	  database or a new user must be created.
+
 2012-08-24	Björn Ricks <bjoern.ricks@intevation.de>
 
 	* src/main/java/de/intevation/flys/client/server/auth/UserClient.java:

--- a/flys-client/src/main/java/de/intevation/flys/client/server/auth/UserClient.java	Fri Aug 24 11:42:31 2012 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/server/auth/UserClient.java	Fri Aug 24 14:14:30 2012 +0000
@@ -31,21 +31,21 @@
     }
 
     public boolean userExists(User user) throws ConnectionException {
-        NodeList users = this.listUsers();
+        Element data = this.findUser(user);
 
-        if (users == null || users.getLength() == 0) {
+        if (user == null) {
             return false;
         }
-        for(int i=0; i < users.getLength(); i++) {
-            Element usernode = (Element)users.item(i);
-            String name = usernode.getAttributeNS(
-                    ArtifactNamespaceContext.NAMESPACE_URI, "name");
+        String XPATH_USERACCOUNT = "/art:user/art:account/@name";
 
-            if (name.equals(user.getName())) {
-                return true;
-            }
+        String account = XMLUtils.xpathString(
+            data, XPATH_USERACCOUNT, ArtifactNamespaceContext.INSTANCE);
+
+        if (account == null) {
+            return false;
         }
-        return false;
+
+        return account.equals(user.getAccount());
     }
 
     public boolean createUser(User user) throws ConnectionException {
@@ -104,6 +104,37 @@
             XPathConstants.NODESET,
             ArtifactNamespaceContext.INSTANCE);
     }
+
+    public Element findUser(User user) throws ConnectionException {
+        HttpClient client = new HttpClientImpl(this.url);
+
+        Document document = XMLUtils.newDocument();
+
+        XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(
+            document,
+            ArtifactNamespaceContext.NAMESPACE_URI,
+            ArtifactNamespaceContext.NAMESPACE_PREFIX
+        );
+
+        Element action = creator.create("action");
+
+        Element type = creator.create("type");
+        type.setAttribute("name", "find");
+        Element account = creator.create("account");
+        account.setAttribute("name", user.getAccount());
+
+        action.appendChild(type);
+        action.appendChild(account);
+        document.appendChild(action);
+
+        logger.debug("Find user request xml: " + XMLUtils.toString(document));
+
+        Document resp = client.findUser(document);
+
+        logger.debug("Find user request response xml: " + XMLUtils.toString(resp));
+
+        return resp.getDocumentElement();
+    }
 }
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