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diff --git a/tags/java/sca/1.5.1/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataBinding.java b/tags/java/sca/1.5.1/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataBinding.java
new file mode 100644
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+++ b/tags/java/sca/1.5.1/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DataBinding.java
@@ -0,0 +1,91 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.sca.databinding;
+
+
+import org.apache.tuscany.sca.interfacedef.DataType;
+import org.apache.tuscany.sca.interfacedef.Operation;
+
+/**
+ * DataBinding represents a data representation, for example, SDO, JAXB and AXIOM
+ *
+ * @version $Rev$ $Date$
+ */
+public interface DataBinding {
+    /**
+     * A special databinding for input message of an operation
+     */
+    String IDL_INPUT = "idl:input";
+    /**
+     * A special databinding for output message of an operation
+     */
+    String IDL_OUTPUT = "idl:output";
+    /**
+     * A special databinding for fault message of an operation
+     */
+    String IDL_FAULT = "idl:fault";
+    /**
+     * The name of a databinding should be case-insensitive and unique
+     * 
+     * @return The name of the databinding
+     */
+    String getName();
+
+    /**
+     * Introspect and populate information to a DataType model
+     * 
+     * @param dataType The data type to be introspected
+     * @param operation The operation
+     * @return true if the databinding has recognized the given data type
+     */
+    boolean introspect(DataType dataType, Operation operation);
+
+    /**
+     * Introspect the data to figure out the corresponding data type
+     * 
+     * @param value The object to be checked
+     * @param operation The operation
+     * @return The DataType or null if the java type is not supported by this databinding
+     */
+    DataType introspect(Object value, Operation operation);
+
+    /**
+     * Provide a WrapperHandler for this databinding
+     * @return A wrapper handler which can handle wrapping/wrapping for this databinding
+     */
+    WrapperHandler getWrapperHandler();
+
+    /**
+     * Make a copy of the object for "pass-by-value" semantics.
+     *
+     * @param object source object to copy 
+     * @param dataType The data type
+     * @param operation The operation
+     * @return copy of the object passed in as argument
+     */
+    Object copy(Object object, DataType dataType, Operation operation);
+    
+    /**
+     * Get the XML type helper for Java types
+     * @return The databinding-specific XML type helper class
+     */
+    XMLTypeHelper getXMLTypeHelper();
+
+}