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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.json;
import java.io.StringWriter;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;
import org.apache.tuscany.sca.common.xml.stax.StAXHelper;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
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.BaseTransformer;
import org.codehaus.jettison.badgerfish.BadgerFishXMLStreamWriter;
/**
* @version $Rev$ $Date$
*/
public class XMLStreamReader2JSON extends BaseTransformer<XMLStreamReader, Object> implements
PullTransformer<XMLStreamReader, Object> {
private StAXHelper staxHelper;
public XMLStreamReader2JSON(ExtensionPointRegistry registry) {
staxHelper = StAXHelper.getInstance(registry);
}
@Override
protected Class<XMLStreamReader> getSourceType() {
return XMLStreamReader.class;
}
@Override
protected Class<Object> getTargetType() {
return Object.class;
}
public Object transform(XMLStreamReader source, TransformationContext context) {
try {
StringWriter writer = new StringWriter();
XMLStreamWriter jsonWriter = new BadgerFishXMLStreamWriter(writer);
staxHelper.save(source, jsonWriter);
source.close();
Class type = null;
if (context != null && context.getTargetDataType() != null) {
type = context.getTargetDataType().getPhysical();
}
return JSONHelper.toJSON(writer.toString(), type);
} catch (Exception e) {
throw new TransformationException(e);
}
}
@Override
public int getWeight() {
return 500;
}
@Override
public String getTargetDataBinding() {
return JSONDataBinding.NAME;
}
}
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