/*
* 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.databinding.axiom;
import java.io.ByteArrayInputStream;
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.spi.databinding.PullTransformer;
import org.apache.tuscany.spi.databinding.TransformationContext;
import org.apache.tuscany.spi.databinding.TransformationException;
import org.apache.tuscany.spi.databinding.Transformer;
import org.apache.tuscany.spi.databinding.extension.TransformerExtension;
import org.apache.tuscany.spi.model.DataType;
import org.osoa.sca.annotations.Service;
@Service(Transformer.class)
public class String2OMElement extends TransformerExtension<String, OMElement> implements
PullTransformer<String, OMElement> {
@SuppressWarnings("unchecked")
public OMElement transform(String source, TransformationContext context) {
try {
StAXOMBuilder builder = new StAXOMBuilder(new ByteArrayInputStream(source.getBytes()));
OMElement element = builder.getDocumentElement();
adjustElementName(context, element);
return element;
} catch (Exception e) {
throw new TransformationException(e);
}
}
/**
* @param context
* @param element
*/
private void adjustElementName(TransformationContext context, OMElement element) {
if (context != null) {
DataType dataType = context.getTargetDataType();
Object targetQName = dataType == null ? null : dataType.getLogical();
if (!(targetQName instanceof QName)) {
return;
}
if (!element.getQName().equals(targetQName)) {
// TODO: Throw expection or switch to the new Element
OMFactory factory = OMAbstractFactory.getOMFactory();
QName name = (QName)targetQName;
OMNamespace namespace = factory.createOMNamespace(name.getNamespaceURI(), name.getPrefix());
element.setNamespace(namespace);
element.setLocalName(name.getLocalPart());
}
}
}
public Class getTargetType() {
return OMElement.class;
}
public Class getSourceType() {
return String.class;
}
public int getWeight() {
return 40;
}
}