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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 java.io.IOException;
import javax.xml.transform.dom.DOMSource;
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.w3c.dom.Document;
import commonj.sdo.DataObject;
import commonj.sdo.helper.XMLHelper;
/**
* Transforms NodeInfo objects to SDO DataObjects.
*
* Before constructing the data object, resulting XML is populated
* with correct namespaces (which are taken from the logical target data type)
* These namespaces are crucial for constructing the right instance of
* the DataObject (i.e. if there is a SDO factory, an instance from this factory will
* be used, not the generic any data object)
*
* @version $Rev$ $Date$
*/
public class NodeInfo2DataObjectTransformer extends BaseTransformer<NodeInfo, DataObject> implements
PullTransformer<NodeInfo, DataObject> {
private NodeInfo2NodeTransformer nodeInfo2NodeTransformer;
public NodeInfo2DataObjectTransformer(NodeInfo2NodeTransformer nodeInfo2NodeTransformer) {
this.nodeInfo2NodeTransformer = nodeInfo2NodeTransformer;
}
public NodeInfo2DataObjectTransformer() {
this.nodeInfo2NodeTransformer = new NodeInfo2NodeTransformer();
}
@Override
protected Class<NodeInfo> getSourceType() {
return NodeInfo.class;
}
@Override
protected Class<DataObject> getTargetType() {
return DataObject.class;
}
@Override
public int getWeight() {
return 30 + nodeInfo2NodeTransformer.getWeight();
}
public DataObject transform(NodeInfo source, TransformationContext context) {
Document doc = (Document)nodeInfo2NodeTransformer.transform(source, context);
return produceResult(doc);
}
private DataObject produceResult(Document doc) {
try {
// FIXME: [rfeng] We should use the HelperContext from the context
DataObject resultingObject =
XMLHelper.INSTANCE.load(new DOMSource(doc), doc.getDocumentURI(), null).getRootObject();
return resultingObject;
} catch (IOException e) {
throw new TransformationException(e);
}
}
}
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