Index: component/src/com/icesoft/faces/component/dataexporter/DataExporter.java
===================================================================
--- component/src/com/icesoft/faces/component/dataexporter/DataExporter.java	(revision 19020)
+++ component/src/com/icesoft/faces/component/dataexporter/DataExporter.java	Thu Jul 30 16:57:04 EEST 2009
@@ -28,7 +28,17 @@
     public static final String COMPONENT_FAMILY = "com.icesoft.faces.DataExporter";
 	public static final String COMPONENT_TYPE = "com.icesoft.faces.DataExporter";
 	public static final String DEFAULT_RENDERER_TYPE = "com.icesoft.faces.DataExporterRenderer";
+    private static final OutputTypeHandler NoopOutputHandler = new OutputTypeHandler("no-data") {
+        public void writeHeaderCell(String text, int col) {
+        }
-	
+
+        public void writeCell(Object output, int col, int row) {
+        }
+
+        public void flushFile() {
+        }
+    };
+
 	private boolean readyToExport = false;
 
 	private String _for;
@@ -42,7 +52,7 @@
 	public final static String EXCEL_TYPE = "excel";
 	public final static String CSV_TYPE = "csv";
 
-	public DataExporter() {
+    public DataExporter() {
 	}
 	
 	   /*
@@ -257,34 +267,28 @@
                 .getCurrentInstance().getExternalContext().getSession(false))
                 .getServletContext();
 
-        try {
-            File exportDir = new File(context.getRealPath("/export"));
-            if (!exportDir.exists())
-                exportDir.mkdirs();
-            String pathWithoutExt = context.getRealPath("/export") + "/export_"
-                    + new Date().getTime();
+        File exportDir = new File(context.getRealPath("/export"));
+        if (!exportDir.exists())
+            exportDir.mkdirs();
+        String pathWithoutExt = context.getRealPath("/export") + "/export_"
+                + new Date().getTime();
 
-            if (getOutputTypeHandler() != null)
-                outputHandler = getOutputTypeHandler();
-            else if (DataExporter.EXCEL_TYPE.equals(getType())) {
-                outputHandler = new ExcelOutputHandler(pathWithoutExt + ".xls",
-                        fc, uiData.getId());
-            } else if (DataExporter.CSV_TYPE.equals(getType())) {
-                outputHandler = new CSVOutputHandler(pathWithoutExt + ".csv");
+        if (getOutputTypeHandler() != null)
+            outputHandler = getOutputTypeHandler();
+        else if (DataExporter.EXCEL_TYPE.equals(getType())) {
+            outputHandler = new ExcelOutputHandler(pathWithoutExt + ".xls",
+                    fc, uiData.getId());
+        } else if (DataExporter.CSV_TYPE.equals(getType())) {
+            outputHandler = new CSVOutputHandler(pathWithoutExt + ".csv");
+        } else {
+            outputHandler = NoopOutputHandler;
-            }
+        }
-            if (outputHandler == null) {
-                return null;
-            }
-            renderToHandler(outputHandler, uiData, fc);
-            setMimeType(outputHandler.getMimeType());
+        renderToHandler(outputHandler, uiData, fc);
+        setMimeType(outputHandler.getMimeType());
 
-        } catch (Exception e) {
-            e.printStackTrace();
+        return outputHandler.getFile();
-        }
+    }
-        return outputHandler != null ? outputHandler.getFile() : null;
 
-    }
-
     private String encodeParentAndChildrenAsString(FacesContext fc,
             UIComponent uic, String str) {
         Object value = uic.getAttributes().get("value");