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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.core.databinding.transformers;
import javax.xml.stream.XMLStreamReader;
import org.apache.tuscany.sca.core.context.CallableReferenceExt;
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.StAXHelper;
import org.oasisopen.sca.CallableReference;
public class CallableReference2XMLStreamReader extends BaseTransformer<CallableReference, XMLStreamReader> implements
PullTransformer<CallableReference, XMLStreamReader> {
@Override
protected Class<CallableReference> getSourceType() {
return CallableReference.class;
}
@Override
protected Class<XMLStreamReader> getTargetType() {
return XMLStreamReader.class;
}
public XMLStreamReader transform(CallableReference source, TransformationContext context) {
try {
if (source != null) {
if (source instanceof CallableReferenceExt) {
XMLStreamReader xmlReader = ((CallableReferenceExt)source).getXMLReader();
if (xmlReader != null) {
return xmlReader;
} else {
String xmlString = ((CallableReferenceExt)source).toXMLString();
// remove "<?xml...?>" processing instruction and wrap with a top-level element
return StAXHelper.createXMLStreamReader("<reference xmlns=\"http://callable\">"
+ xmlString.substring(xmlString.indexOf("?>") + 2)
+ "</reference>");
}
} else {
throw new TransformationException("Unrecognized transformation source object");
}
} else {
return null;
}
} catch (Exception e) {
throw new TransformationException(e);
}
}
@Override
public int getWeight() {
return 10;
}
}
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