--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/org/dive4elements/river/artifacts/services/ThemeListingService.java	Thu Apr 25 12:06:39 2013 +0200
@@ -0,0 +1,74 @@
+package org.dive4elements.river.artifacts.services;
+
+import java.util.List;
+
+import org.apache.log4j.Logger;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+
+import org.dive4elements.artifacts.CallMeta;
+import org.dive4elements.artifacts.GlobalContext;
+
+import org.dive4elements.artifacts.common.utils.XMLUtils;
+
+import org.dive4elements.river.themes.Theme;
+import org.dive4elements.river.themes.ThemeGroup;
+
+import org.dive4elements.river.themes.ThemeFactory;
+import org.dive4elements.river.artifacts.context.FLYSContext;
+
+/**
+ * This service provides a list of themes filtered by the theme name.
+ *
+ * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
+ */
+public class ThemeListingService extends FLYSService {
+
+    /** The logger used in this service.*/
+    private static Logger logger = Logger.getLogger(ThemeListingService.class);
+
+    private static final String XPATH_THEME_NAME = "/theme/@name";
+
+    protected Document doProcess(
+        Document      data,
+        GlobalContext context,
+        CallMeta      callMeta
+    ) {
+        logger.debug("ThemeListingService.process");
+        String name = XMLUtils.xpathString(data, XPATH_THEME_NAME, null);
+
+        if (name == null) {
+            logger.warn("No theme name provided.");
+        }
+        Document result = XMLUtils.newDocument();
+
+        XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
+            result,
+            null,
+            null);
+
+        List<ThemeGroup> tgs =
+            ThemeFactory.getThemeGroups((FLYSContext) context);
+
+        Element te = ec.create("themes");
+
+        for (ThemeGroup tg: tgs) {
+            Element elem = ec.create("themegroup");
+            if (tg.getName().equals("virtual")) {
+                continue;
+            }
+            ec.addAttr(elem, "name", tg.getName());
+            Theme theme = tg.getThemeByName(name);
+            Document d = theme.toXML();
+            Node imported = result.importNode(d.getDocumentElement(), true);
+            elem.appendChild(imported);
+            te.appendChild(elem);
+        }
+
+        result.appendChild(te);
+        return result;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :