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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.saxon;
import javax.xml.transform.dom.DOMResult;
import net.sf.saxon.om.NodeInfo;
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.databinding.impl.DOMHelper;
import commonj.sdo.DataObject;
import commonj.sdo.helper.XMLDocument;
import commonj.sdo.helper.XMLHelper;
/**
* Transforms SDO DataObject-s to NodeInfo objects needed by Saxon parser.
*
* For root element when Serializing the DataObject the name of its
* implemented interface is used with its first letter made lowercase.
* Also any namespaces that are defined are deleted, because otherwise
* the SaxonB parser does not work
*
* @version $Rev$ $Date$
*/
public class DataObject2NodeInfoTransformer extends BaseTransformer<DataObject, NodeInfo> implements
PullTransformer<DataObject, NodeInfo> {
private Node2NodeInfoTransformer node2NodeInfoTransformer;
public DataObject2NodeInfoTransformer(Node2NodeInfoTransformer node2NodeInfoTransformer) {
this.node2NodeInfoTransformer = node2NodeInfoTransformer;
}
public DataObject2NodeInfoTransformer() {
this.node2NodeInfoTransformer = new Node2NodeInfoTransformer();
}
public NodeInfo transform(DataObject source, TransformationContext context) {
// FIXME: Need to create the HelperContext from the transformation context
// FIXME: This is a big hack to create a document using the class name
XMLHelper helper = XMLHelper.INSTANCE;
String name = null;
if (source.getClass().getInterfaces().length > 0) {
name = source.getClass().getInterfaces()[0].getSimpleName();
} else {
name = source.getClass().getName();
}
if (name.length() > 0) {
name = Character.toLowerCase(name.charAt(0)) + name.substring(1, name.length());
}
try {
DOMResult domResult = new DOMResult(DOMHelper.newDocument());
XMLDocument xmlDoc = helper.createDocument(source, null, name);
helper.save(xmlDoc, domResult, null);
return node2NodeInfoTransformer.transform(domResult.getNode(), context);
} catch (Exception e) {
throw new TransformationException(e);
}
}
@Override
protected Class<DataObject> getSourceType() {
return DataObject.class;
}
@Override
protected Class<NodeInfo> getTargetType() {
return NodeInfo.class;
}
@Override
public int getWeight() {
return 30 + node2NodeInfoTransformer.getWeight();
}
}
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