--- a/flys-artifacts/src/main/java/de/intevation/flys/exports/AbstractExporter.java	Tue Dec 20 15:14:54 2011 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/exports/AbstractExporter.java	Wed Dec 21 09:17:23 2011 +0000
@@ -124,7 +124,10 @@
             return;
         }
 
-        addData(artifactFacet.getData(context));
+        Object data = artifactFacet.getData(context);
+        prepareData(artifactFacet, data);
+
+        addData(data);
     }
 
 
@@ -202,6 +205,19 @@
 
 
     /**
+     * This method can be used to prepare data items before they are injected
+     * into the exporter using <i>addData()</i>. The method in this
+     * implementation is empty and doesn't do anything.
+     *
+     * @param aaf The wrapper for the Artifact and Facet.
+     * @param data The data object.
+     */
+    protected void prepareData(ArtifactAndFacet aaf, Object data) {
+        // override me in subclasses
+    }
+
+
+    /**
      * This method starts CSV creation. It makes use of writeCSVData() which has
      * to be implemented by concrete subclasses.
      */