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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.sdo;
import java.security.AccessController;
import java.security.PrivilegedAction;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import org.apache.tuscany.sca.databinding.BaseTransformer;
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.sdo.api.SDOUtil;
import org.apache.tuscany.sdo.api.XMLStreamHelper;
import commonj.sdo.DataObject;
import commonj.sdo.helper.HelperContext;
import commonj.sdo.helper.XMLDocument;
import commonj.sdo.helper.XMLHelper;
public class DataObject2XMLStreamReader extends BaseTransformer<DataObject, XMLStreamReader> implements
PullTransformer<DataObject, XMLStreamReader> {
public XMLStreamReader transform(final DataObject source, TransformationContext context) {
if (source == null) {
return null;
}
try {
HelperContext helperContext = SDOContextHelper.getHelperContext(context, true);
XMLStreamHelper streamHelper = SDOUtil.createXMLStreamHelper(helperContext);
final QName elementName = SDOContextHelper.getElement(context);
final XMLHelper xmlHelper = helperContext.getXMLHelper();
// Allow privileged access to read properties. REquires java.util.PropertyPermission
// XML.load.form.lax read in security policy.
XMLDocument document = AccessController.doPrivileged(new PrivilegedAction<XMLDocument>() {
public XMLDocument run() {
return xmlHelper.createDocument(source, elementName.getNamespaceURI(), elementName.getLocalPart());
}
});
return streamHelper.createXMLStreamReader(document);
} catch (XMLStreamException e) {
// TODO: Add context to the exception
throw new TransformationException(e);
}
}
@Override
protected Class<DataObject> getSourceType() {
return DataObject.class;
}
@Override
protected Class<XMLStreamReader> getTargetType() {
return XMLStreamReader.class;
}
@Override
public int getWeight() {
return 10;
}
}
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