--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gwt-client/src/main/java/org/dive4elements/river/client/server/DescribeCollectionServiceImpl.java	Thu Apr 25 15:23:37 2013 +0200
@@ -0,0 +1,76 @@
+package org.dive4elements.river.client.server;
+
+import org.w3c.dom.Document;
+
+import org.apache.log4j.Logger;
+
+import com.google.gwt.user.server.rpc.RemoteServiceServlet;
+
+import org.dive4elements.artifacts.common.utils.ClientProtocolUtils;
+
+import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException;
+import org.dive4elements.artifacts.httpclient.http.HttpClient;
+import org.dive4elements.artifacts.httpclient.http.HttpClientImpl;
+import org.dive4elements.artifacts.httpclient.http.response.DocumentResponseHandler;
+
+import org.dive4elements.river.client.shared.exceptions.ServerException;
+import org.dive4elements.river.client.shared.model.Collection;
+
+import org.dive4elements.river.client.client.services.DescribeCollectionService;
+
+
+/**
+ * This service implements a method that queries the DESCRIBE document of a
+ * specific collection and returns a Collection object with the information of
+ * the document.
+ *
+ * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
+ */
+public class DescribeCollectionServiceImpl
+extends      RemoteServiceServlet
+implements   DescribeCollectionService
+{
+    private static final Logger logger =
+        Logger.getLogger(DescribeCollectionServiceImpl.class);
+
+
+    /** The error message key that is thrown if an error occured while
+     * describe() a Collection.*/
+    public static final String ERROR_DESCRIBE_COLLECTION =
+        "error_describe_collection";
+
+
+    public Collection describe(String uuid, String locale)
+    throws ServerException
+    {
+        logger.info("DescribeCollectionServiceImpl.describe");
+
+        String url  = getServletContext().getInitParameter("server-url");
+
+        Document describe = ClientProtocolUtils.newDescribeCollectionDocument(
+            uuid);
+
+        HttpClient client = new HttpClientImpl(url, locale);
+
+        try {
+            Document response = (Document) client.doCollectionAction(
+                describe, uuid, new DocumentResponseHandler());
+
+            Collection c = CollectionHelper.parseCollection(response);
+
+            if (c == null) {
+                throw new ServerException(ERROR_DESCRIBE_COLLECTION);
+            }
+
+            logger.debug("Collection successfully parsed.");
+
+            return c;
+        }
+        catch (ConnectionException ce) {
+            logger.error(ce, ce);
+        }
+
+        throw new ServerException(ERROR_DESCRIBE_COLLECTION);
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :