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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.xml;
import javax.xml.stream.XMLStreamReader;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.databinding.BaseTransformer;
import org.apache.tuscany.sca.databinding.DataPipe;
import org.apache.tuscany.sca.databinding.PullTransformer;
import org.apache.tuscany.sca.databinding.TransformationContext;
import org.apache.tuscany.sca.databinding.TransformationException;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.xml.sax.ContentHandler;
/**
* Transform DOM Node to XML XMLStreamReader
*
* @version $Rev$ $Date$
*/
public class XMLStreamReader2Node extends BaseTransformer<XMLStreamReader, Node> implements
PullTransformer<XMLStreamReader, Node> {
private XMLStreamReader2SAX stax2sax;
private SAX2DOMPipe sax2domPipe;
public XMLStreamReader2Node(ExtensionPointRegistry registry) {
stax2sax = new XMLStreamReader2SAX(registry);
sax2domPipe = new SAX2DOMPipe(registry);
}
public Node transform(XMLStreamReader source, TransformationContext context) {
try {
if (source == null) {
return null;
}
DataPipe<ContentHandler, Node> pipe = sax2domPipe.newInstance();
stax2sax.transform(source, pipe.getSink(), context);
Node node = pipe.getResult();
source.close();
if (node instanceof Document) {
Document doc = (Document)node;
return DOMDataBinding.adjustElementName(context, doc.getDocumentElement());
} else {
return node;
}
} catch (Exception e) {
throw new TransformationException(e);
}
}
@Override
protected Class<XMLStreamReader> getSourceType() {
return XMLStreamReader.class;
}
@Override
protected Class<Node> getTargetType() {
return Node.class;
}
@Override
public int getWeight() {
return 40;
}
}
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