diff -r 000000000000 -r 639991d0808a java/cewolf-1.0/src/main/java/de/laures/cewolf/ChartHolder.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/java/cewolf-1.0/src/main/java/de/laures/cewolf/ChartHolder.java	Sat Feb 28 21:31:02 2009 +0100
@@ -0,0 +1,56 @@
+/* ================================================================
+ * Cewolf : Chart enabling Web Objects Framework
+ * ================================================================
+ *
+ * Project Info:  http://cewolf.sourceforge.net
+ * Project Lead:  Guido Laures (guido@laures.de);
+ *
+ * (C) Copyright 2002, by Guido Laures
+ *
+ * This library is free software; you can redistribute it and/or modify it under the terms
+ * of the GNU Lesser General Public License as published by the Free Software Foundation;
+ * either version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with this
+ * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+package de.laures.cewolf;
+
+/**
+ * An object of this type represents a full descritption of a chart.
+ * Therefore it is able to produce the chart and dataset object
+ * resulting out of this definition.
+ * @author  Guido Laures
+ */
+public interface ChartHolder {
+
+	/**
+	 * Returns a chart. The type of this object is dependant on the underlying
+	 * chart implementation. As of this version of Cewolf it is of type
+	 * org.jfree.chart.JFreeChart.
+	 * @return the chart object for this definition
+	 * @throws DatasetProduceException if there could be no data produced for
+	 * the cahrt
+	 * @throws ConfigurationException if there is something wrong in the
+	 * Cewolf configuration
+	 * @throws PostProcessingException if a post processor failed to 
+	 * process the chart
+	 */
+    public Object getChart() throws DatasetProduceException, PostProcessingException, ChartValidationException;
+    
+	/**
+	 * Returns the dataset produced when using this definition.The type of this object is dependant on the underlying
+	 * chart implementation. As of this version of Cewolf it is of type
+	 * org.jfree.data.Dataset.
+	 * @return Object the dataset for this definition
+	 * @throws DatasetProduceException if the dataset could not be produced
+	 */
+    public Object getDataset() throws DatasetProduceException;
+    
+}