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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.stream.XMLStreamReader;
import javax.xml.transform.dom.DOMSource;
import net.sf.saxon.Configuration;
import net.sf.saxon.event.Builder;
import net.sf.saxon.om.NodeInfo;
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.apache.tuscany.sca.databinding.impl.BaseTransformer;
import org.apache.tuscany.sca.databinding.xml.SAX2DOMPipe;
import org.apache.tuscany.sca.databinding.xml.StAX2SAXAdapter;
import org.w3c.dom.Node;
import org.xml.sax.ContentHandler;
/**
* Transforms an XMLStreamReader to a NodeInfo object needed by Saxon parser.
*
* Any namespaces that are defined are deleted, because otherwise
* the SaxonB parser does not work
*
* @version $Rev: 671701 $ $Date: 2008-06-26 02:29:06 +0100 (Thu, 26 Jun 2008) $
*/
public class XMLStreamReader2NodeInfoTransformer extends BaseTransformer<XMLStreamReader, NodeInfo> implements
PullTransformer<XMLStreamReader, NodeInfo> {
private StAX2SAXAdapter stax2sax = new StAX2SAXAdapter(false);
private SAX2DOMPipe sax2dom = new SAX2DOMPipe();
public NodeInfo transform(XMLStreamReader source, TransformationContext context) {
Configuration configuration = SaxonDataBindingHelper.CURR_EXECUTING_CONFIG;
if (configuration == null) {
configuration = new Configuration();
}
NodeInfo docInfo = null;
try {
DataPipe<ContentHandler, Node> pipe = sax2dom.newInstance();
stax2sax.parse(source, pipe.getSink());
Node node = pipe.getResult();
source.close();
docInfo = Builder.build(new DOMSource(node), null, configuration);
} catch (Exception e) {
throw new TransformationException(e);
}
return docInfo;
}
@Override
protected Class<XMLStreamReader> getSourceType() {
return XMLStreamReader.class;
}
@Override
protected Class<NodeInfo> getTargetType() {
return NodeInfo.class;
}
@Override
public int getWeight() {
return 10;
}
}
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