1 files changed, 160 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/databinding-jaxb/src/main/java/org/apache/tuscany/sca/databinding/jaxb/JAXBDataBinding.java b/sca-java-2.x/tags/2.0.1-RC1/modules/databinding-jaxb/src/main/java/org/apache/tuscany/sca/databinding/jaxb/JAXBDataBinding.java
new file mode 100644
index 0000000000..1eb78caeb1
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/databinding-jaxb/src/main/java/org/apache/tuscany/sca/databinding/jaxb/JAXBDataBinding.java
@@ -0,0 +1,160 @@
+/*
+ * 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.jaxb;
+
+import static org.apache.tuscany.sca.databinding.jaxb.JAXBContextHelper.getValueType;
+
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+
+import javax.xml.bind.JAXBContext;
+import javax.xml.bind.JAXBElement;
+import javax.xml.namespace.QName;
+
+import org.apache.tuscany.sca.common.xml.dom.DOMHelper;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.databinding.BaseDataBinding;
+import org.apache.tuscany.sca.databinding.WrapperHandler;
+import org.apache.tuscany.sca.databinding.XMLTypeHelper;
+import org.apache.tuscany.sca.interfacedef.DataType;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl;
+import org.apache.tuscany.sca.interfacedef.util.XMLType;
+import org.w3c.dom.Document;
+
+/**
+ * JAXB DataBinding
+ *
+ * @version $Rev$ $Date$
+ */
+public class JAXBDataBinding extends BaseDataBinding {
+    public static final String NAME = JAXBElement.class.getName();
+
+    public static final String ROOT_NAMESPACE = "http://tuscany.apache.org/xmlns/sca/databinding/jaxb/1.0";
+    public static final QName ROOT_ELEMENT = new QName(ROOT_NAMESPACE, "root");
+    
+    private JAXBWrapperHandler wrapperHandler;
+    private JAXBTypeHelper xmlTypeHelper;
+    private DOMHelper domHelper;
+    private JAXBContextHelper contextHelper;
+    
+    public JAXBDataBinding(ExtensionPointRegistry registry) {
+        super(NAME, JAXBElement.class);
+        this.wrapperHandler = new JAXBWrapperHandler();
+        this.xmlTypeHelper = new JAXBTypeHelper(registry);
+        this.domHelper = DOMHelper.getInstance(registry);
+        contextHelper = JAXBContextHelper.getInstance(registry);
+    }
+
+    @Override
+    public boolean introspect(DataType dataType, Operation operation) {
+        Class javaType = dataType.getPhysical();
+        if (JAXBElement.class.isAssignableFrom(javaType)) {
+            Type type = javaType.getGenericSuperclass();
+            if (type instanceof ParameterizedType) {
+                ParameterizedType parameterizedType = ((ParameterizedType)type);
+                Type rawType = parameterizedType.getRawType();
+                if (rawType == JAXBElement.class) {
+                    Type actualType = parameterizedType.getActualTypeArguments()[0];
+                    if (actualType instanceof Class) {
+                        XMLType xmlType = JAXBContextHelper.getXmlTypeName((Class)actualType);
+                        dataType.setLogical(xmlType);
+                        dataType.setDataBinding(NAME);
+                        return true;
+                    }
+                }
+            }
+            if (dataType.getLogical() == null) {
+                dataType.setLogical(XMLType.UNKNOWN);
+            }
+            dataType.setDataBinding(NAME);
+            return true;
+        }
+
+        XMLType xmlType = JAXBContextHelper.getXmlTypeName(javaType);
+        if (xmlType == null) {
+            return false;
+        }
+        
+        // If DataType is already an XMLType it might have an element name that we wish to preserve
+        // but check that we're not overwriting the UNKNOWN type
+        Object logical = dataType.getLogical();
+        if (logical instanceof XMLType &&
+            logical != XMLType.UNKNOWN) {
+            ((XMLType)logical).setTypeName(xmlType.getTypeName());
+        } else {
+            dataType.setLogical(xmlType);            
+        }
+
+        dataType.setDataBinding(NAME);
+        return true;
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public Object copy(Object arg,
+                       DataType sourceDataType,
+                       DataType targetDataType,
+                       Operation sourceOperation,
+                       Operation targetOperation) {
+        try {
+            boolean isElement = false;
+            if (sourceDataType == null) {
+                Class cls = arg.getClass();
+                if (arg instanceof JAXBElement) {
+                    isElement = true;
+                    cls = ((JAXBElement)arg).getDeclaredType();
+                }
+                sourceDataType = new DataTypeImpl<XMLType>(NAME, cls, XMLType.UNKNOWN);
+            }
+            JAXBContext context = contextHelper.createJAXBContext(sourceDataType);
+            arg = JAXBContextHelper.createJAXBElement(context, sourceDataType, arg);
+            Document doc = domHelper.newDocument();
+            context.createMarshaller().marshal(arg, doc);
+            
+            Object value;
+            if (targetDataType != null && targetDataType.getPhysical() != sourceDataType.getPhysical()) {
+                JAXBContext targetContext = contextHelper.createJAXBContext(targetDataType);
+                value = targetContext.createUnmarshaller().unmarshal(doc, getValueType(targetDataType.getPhysical()));
+            } else {
+                value = context.createUnmarshaller().unmarshal(doc, getValueType(sourceDataType.getPhysical()));
+            }
+            
+            if (isElement && value instanceof JAXBElement) {
+                return value;
+            }
+            return JAXBContextHelper.createReturnValue(context, sourceDataType, value);
+        } catch (Exception e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+    @Override
+    public WrapperHandler getWrapperHandler() {
+        return wrapperHandler;
+    }
+
+    @Override
+    public XMLTypeHelper getXMLTypeHelper() {
+        // return new JAXBTypeHelper();
+        return xmlTypeHelper;
+    }
+
+}