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diff --git a/sca-java-1.x/tags/java-stable-20060304/das/rdb/src/main/java/org/apache/tuscany/das/rdb/Converter.java b/sca-java-1.x/tags/java-stable-20060304/das/rdb/src/main/java/org/apache/tuscany/das/rdb/Converter.java
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+++ b/sca-java-1.x/tags/java-stable-20060304/das/rdb/src/main/java/org/apache/tuscany/das/rdb/Converter.java
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+/**
+ *
+ *  Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.apache.tuscany.das.rdb;
+
+/**
+ * A lightweight Tabele-column <--> DataObject-property converter framework.
+ * Converters allow a user to insert a transformation between a column value and
+ * is destination DataObject property value. For example, by default, a VARCHAR
+ * column will be represented as a String in its corresponding DataObject
+ * property. A user could insert a converter that transforms the the VARCHAR
+ * value to an Integer. If this is done then although the column returns
+ * character data, the DataObject property will be an Integer
+ * 
+ * 
+ */
+public interface Converter {
+
+	/**
+	 * Transform the columnData object to a new value and possibly new type.
+	 * This should be the invers operation of #getColumnValue
+	 * 
+	 * @param columnData
+	 *            The column value to transorm
+	 * @return Returns the transformed value
+	 */
+	public Object getPropertyValue(Object columnData);
+
+	/**
+	 * Transform the columnData object to a new value and possibly new type.
+	 * This should be the invers operation of #getPropertyValue
+	 * 
+	 * @param propertyData
+	 *            The property value to transform
+	 * @return Returns the transformed value
+	 */
+	public Object getColumnValue(Object propertyData);
+
+}