--- a/flys-client/ChangeLog	Thu Sep 01 12:49:12 2011 +0000
+++ b/flys-client/ChangeLog	Fri Sep 02 12:48:25 2011 +0000
@@ -1,3 +1,16 @@
+2011-09-02	Felix Wolfsteller	<felix.wolfsteller@intevation.de> 
+
+	Added implementation of a FeedService.
+
+	* src/main/java/de/intevation/flys/client/client/services/FeedServiceAsync.java,
+	  src/main/java/de/intevation/flys/client/client/services/FeedService.java,
+	  src/main/java/de/intevation/flys/client/server/FeedServiceImpl.java:
+	  Added implementation of a FeedService (shamelessly copied from
+	  ~AdvanceService)
+
+	* src/main/webapp/WEB-INF/web.xml:
+	  Added configuration of feedService.
+
 2011-09-01  Ingo Weinzierl <ingo@intevation.de>
 
 	* src/main/java/de/intevation/flys/client/client/ui/map/DrawControl.java:

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/client/services/FeedService.java	Fri Sep 02 12:48:25 2011 +0000
@@ -0,0 +1,33 @@
+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.exceptions.ServerException;
+import de.intevation.flys.client.shared.model.Artifact;
+import de.intevation.flys.client.shared.model.Data;
+
+/**
+ * This interface provides artifact specific operation FEED.
+ */
+@RemoteServiceRelativePath("feed")
+public interface FeedService extends RemoteService {
+
+    /**
+     * This method inserts new data into the an existing artifact.
+     *
+     * @param serverUrl The url of the artifact server.
+     * @param locale The locale used for the request.
+     * @param artifact The artifact.
+     * @param data The data that should be inserted.
+     *
+     * @return the artifact which description might have been changed.
+     */
+    public Artifact feed(
+        String   serverUrl,
+        String   locale,
+        Artifact artifact,
+        Data[]   data)
+    throws ServerException;
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/client/services/FeedServiceAsync.java	Fri Sep 02 12:48:25 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.Artifact;
+import de.intevation.flys.client.shared.model.Data;
+
+
+/**
+ * This interface provides artifact specific operation FEED.
+ */
+public interface FeedServiceAsync {
+
+    public void feed(
+        String                  serverUrl,
+        String                  locale,
+        Artifact                artifact,
+        Data[]                  data,
+        AsyncCallback<Artifact> callback);
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/server/FeedServiceImpl.java	Fri Sep 02 12:48:25 2011 +0000
@@ -0,0 +1,134 @@
+package de.intevation.flys.client.server;
+
+import org.w3c.dom.Document;
+
+import com.google.gwt.user.server.rpc.RemoteServiceServlet;
+
+import de.intevation.artifacts.common.ArtifactNamespaceContext;
+import de.intevation.artifacts.common.utils.ClientProtocolUtils;
+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.artifacts.httpclient.http.response.DocumentResponseHandler;
+
+import de.intevation.flys.client.shared.exceptions.ServerException;
+import de.intevation.flys.client.shared.model.Artifact;
+import de.intevation.flys.client.shared.model.ArtifactDescription;
+import de.intevation.flys.client.shared.model.Data;
+import de.intevation.flys.client.shared.model.DataItem;
+import de.intevation.flys.client.client.services.FeedService;
+
+/**
+ * This interface provides a method that bundles the artifact specific
+ * operation FEED.
+ */
+public class FeedServiceImpl
+extends      RemoteServiceServlet
+implements   FeedService
+{
+    /** XPath that points to the result type of a feed or advance operation.*/
+    public static final String XPATH_RESULT = "/art:result/@art:type";
+
+    /** XPath that points to the result type of a feed or advance operation.*/
+    public static final String XPATH_RESULT_MSG = "/art:result/text()";
+
+    /** A constant that marks errors.*/
+    public static final String OPERATION_FAILURE = "FAILURE";
+
+    /** The error message key that is thrown if an error occured while feeding
+     * new data.*/
+    public static final String ERROR_FEED_DATA = "error_feed_data";
+
+
+    /**
+     * This method triggers the FEED operation.
+     *
+     * @param url The url of the artifact server.
+     * @param artifact The artifact that needs to be fed.
+     * @param data An array of Data objects that contain the information that
+     * are used for the FEED operation.
+     *
+     * @return a new artifact parsed from the description of FEED.
+     */
+    public Artifact feed(
+        String   url,
+        String   locale,
+        Artifact artifact,
+        Data[]   data)
+    throws    ServerException
+    {
+        System.out.println("StepForwardServiceImpl.feed");
+
+        Document feed = ClientProtocolUtils.newFeedDocument(
+            artifact.getUuid(),
+            artifact.getHash(),
+            createKVP(data));
+
+        HttpClient client = new HttpClientImpl(url, locale);
+
+        try {
+            Document description = (Document) client.feed(
+                new de.intevation.artifacts.httpclient.objects.Artifact(
+                    artifact.getUuid(),
+                    artifact.getHash()),
+                feed,
+                new DocumentResponseHandler());
+
+            if (description == null) {
+                System.err.println("StepForwardService.feed() - FAILED");
+                throw new ServerException(ERROR_FEED_DATA);
+            }
+
+            String result = XMLUtils.xpathString(
+                description,
+                XPATH_RESULT,
+                ArtifactNamespaceContext.INSTANCE);
+
+            if (result == null || !result.equals(OPERATION_FAILURE)) {
+                System.out.println("StepForwardService.feed() - SUCCESS");
+                return (Artifact) new FLYSArtifactCreator().create(description);
+            }
+            else if (result != null && result.equals(OPERATION_FAILURE)) {
+                String msg = XMLUtils.xpathString(
+                    description,
+                    XPATH_RESULT_MSG,
+                    ArtifactNamespaceContext.INSTANCE);
+                throw new ServerException(msg);
+            }
+        }
+        catch (ConnectionException ce) {
+            System.err.println(ce.getLocalizedMessage());
+        }
+
+        System.err.println("StepForwardService.feed() - FAILED");
+        throw new ServerException(ERROR_FEED_DATA);
+    }
+
+
+    /**
+     * This method creates an array of key/value pairs from an array of Data
+     * objects. The string array is used as parameter for the feed() operation.
+     *
+     * @param data The data that should be transformed into the string array.
+     *
+     * @return a string array that contains key/value pairs.
+     */
+    protected String[][] createKVP(Data[] data) {
+        String[][] kvp = new String[data.length][];
+
+        int i = 0;
+
+        for (Data d: data) {
+            DataItem[] items = d.getItems();
+            String key       = d.getLabel();
+            String value     = items[0].getStringValue();
+
+            kvp[i++] = new String[] { key, value };
+        }
+
+        return kvp;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

--- a/flys-client/src/main/webapp/WEB-INF/web.xml	Thu Sep 01 12:49:12 2011 +0000
+++ b/flys-client/src/main/webapp/WEB-INF/web.xml	Fri Sep 02 12:48:25 2011 +0000
@@ -68,6 +68,16 @@
   </servlet-mapping>
 
   <servlet>
+    <servlet-name>feed</servlet-name>
+    <servlet-class>de.intevation.flys.client.server.FeedServiceImpl</servlet-class>
+  </servlet>
+  
+  <servlet-mapping>
+    <servlet-name>feed</servlet-name>
+    <url-pattern>/flys/feed</url-pattern>
+  </servlet-mapping>
+
+  <servlet>
     <servlet-name>advance</servlet-name>
     <servlet-class>de.intevation.flys.client.server.AdvanceServiceImpl</servlet-class>
   </servlet>