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/*
* 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 javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamReader;
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;
/**
*
* @version $Rev$ $Date$
*/
public class JAXB2XMLStreamReader extends BaseTransformer<Object, XMLStreamReader> implements
PullTransformer<Object, XMLStreamReader> {
public JAXB2XMLStreamReader() {
super();
}
public XMLStreamReader transform(Object source, TransformationContext context) {
if (source == null) {
return null;
}
try {
QName name = null;
Object bean = null;
if (source instanceof JAXBElement) {
bean = ((JAXBElement)source).getValue();
name = ((JAXBElement)source).getName();
} else {
JAXBContext jaxbContext = JAXBContextHelper.createJAXBContext(context, true);
Object element = JAXBContextHelper.createJAXBElement(jaxbContext, context.getSourceDataType(), source);
name = jaxbContext.createJAXBIntrospector().getElementName(element);
bean = source;
}
BeanXMLStreamReaderImpl reader = new BeanXMLStreamReaderImpl(name, bean);
return reader;
} catch (Exception e) {
throw new TransformationException(e);
}
}
@Override
protected Class<Object> getSourceType() {
return Object.class;
}
@Override
protected Class<XMLStreamReader> getTargetType() {
return XMLStreamReader.class;
}
@Override
public int getWeight() {
return 10;
}
@Override
public String getTargetDataBinding() {
return JAXBDataBinding.NAME;
}
}
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