1 files changed, 106 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.6-TUSCANY-3909/databinding-xstream/src/main/java/org/apache/tuscany/sca/databinding/xstream/XObject2OMElement.java b/sca-java-1.x/tags/1.6-TUSCANY-3909/databinding-xstream/src/main/java/org/apache/tuscany/sca/databinding/xstream/XObject2OMElement.java
new file mode 100644
index 0000000000..ff4305491a
--- /dev/null
+++ b/sca-java-1.x/tags/1.6-TUSCANY-3909/databinding-xstream/src/main/java/org/apache/tuscany/sca/databinding/xstream/XObject2OMElement.java
@@ -0,0 +1,106 @@
+/*
+ * 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.xstream;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+
+import javax.xml.namespace.QName;
+
+import org.apache.axiom.om.OMAbstractFactory;
+import org.apache.axiom.om.OMElement;
+import org.apache.axiom.om.OMFactory;
+import org.apache.axiom.om.OMNamespace;
+import org.apache.axiom.om.impl.builder.StAXOMBuilder;
+import org.apache.tuscany.sca.databinding.PullTransformer;
+import org.apache.tuscany.sca.databinding.TransformationContext;
+import org.apache.tuscany.sca.databinding.TransformationException;
+import org.apache.tuscany.sca.databinding.impl.BaseTransformer;
+import org.apache.tuscany.sca.interfacedef.DataType;
+import org.apache.tuscany.sca.interfacedef.util.XMLType;
+
+import com.thoughtworks.xstream.XStream;
+
+/**
+ * XObject --> AXIOM OMElement transformer
+ * 
+ * @version $Rev$ $Date$
+ */
+public class XObject2OMElement extends BaseTransformer<XObject, OMElement> implements
+    PullTransformer<XObject, OMElement> {
+
+    public OMElement transform(XObject source, TransformationContext context) {
+        MetaObject mj = new MetaObjectImpl(source);
+        OMElement element = null;
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+        XStream xs = new XStream();
+        xs.alias("xobject", mj.getClass());
+        xs.toXML(mj, out);
+        /* TODO: Maybe a base64 conversion...? or not?
+         *  ie. new ByteArrayInputStream(Utils.toBase64(out.toByteArray()).getBytes())
+         */
+        try {
+            // what's better this one:
+            StAXOMBuilder builder = new StAXOMBuilder(new ByteArrayInputStream(out.toByteArray()));
+            // or this one:
+            //  StaAXOMBuilder builder = new StAXOMBuilder(new ByteArrayInputStream(Utils.toBase64(out.toByteArray()).getBytes()))
+            element = builder.getDocumentElement();
+            adjustElementName(context, element);
+        } catch (Exception e) {
+            throw new TransformationException(e);
+        }
+        return element;
+
+    }
+
+    private static void adjustElementName(TransformationContext context, OMElement element) {
+        if (context != null) {
+            DataType dataType = context.getTargetDataType();
+            Object logical = dataType == null ? null : dataType.getLogical();
+            if (!(logical instanceof XMLType)) {
+                return;
+            }
+            XMLType xmlType = (XMLType)logical;
+            if (xmlType.isElement() && !xmlType.getElementName().equals(element.getQName())) {
+                // FIXME:: Throw exception or switch to the new Element?
+                OMFactory factory = OMAbstractFactory.getOMFactory();
+                QName name = xmlType.getElementName();
+                OMNamespace namespace = factory.createOMNamespace(name.getNamespaceURI(), name.getPrefix());
+                element.setNamespace(namespace);
+                element.setLocalName(name.getLocalPart());
+            }
+        }
+    }
+
+    @Override
+    public Class<XObject> getSourceType() {
+        return XObject.class;
+    }
+
+    @Override
+    public Class<OMElement> getTargetType() {
+        return OMElement.class;
+    }
+
+    @Override
+    public int getWeight() {
+        return 10;
+    }
+
+}