/*
* Copyright 2005-2010 the original author or authors.
*
* Licensed 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.springframework.ws.server.endpoint.adapter.method.dom;
import javax.xml.transform.Source;
import javax.xml.transform.TransformerException;
import javax.xml.transform.dom.DOMSource;
import org.springframework.core.MethodParameter;
import org.springframework.ws.server.endpoint.adapter.method.AbstractPayloadSourceMethodProcessor;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.DOMReader;
import org.dom4j.io.DocumentResult;
import org.dom4j.io.DocumentSource;
/**
* Implementation of {@link org.springframework.ws.server.endpoint.adapter.method.MethodArgumentResolver
* MethodArgumentResolver} and {@link org.springframework.ws.server.endpoint.adapter.method.MethodReturnValueHandler
* MethodReturnValueHandler} that supports dom4j {@linkplain Element elements}.
*
* @author Arjen Poutsma
* @since 2.0
*/
public class Dom4jPayloadMethodProcessor extends AbstractPayloadSourceMethodProcessor {
@Override
protected boolean supportsRequestPayloadParameter(MethodParameter parameter) {
return supports(parameter);
}
@Override
protected Element resolveRequestPayloadArgument(MethodParameter parameter, Source requestPayload)
throws TransformerException {
if (requestPayload instanceof DOMSource) {
org.w3c.dom.Node node = ((DOMSource) requestPayload).getNode();
if (node.getNodeType() == org.w3c.dom.Node.DOCUMENT_NODE) {
DOMReader domReader = new DOMReader();
Document document = domReader.read((org.w3c.dom.Document) node);
return document.getRootElement();
}
}
// we have no other option than to transform
DocumentResult dom4jResult = new DocumentResult();
transform(requestPayload, dom4jResult);
return dom4jResult.getDocument().getRootElement();
}
@Override
protected boolean supportsResponsePayloadReturnType(MethodParameter returnType) {
return supports(returnType);
}
@Override
protected Source createResponsePayload(MethodParameter returnType, Object returnValue) {
Element returnedElement = (Element) returnValue;
return new DocumentSource(returnedElement);
}
private boolean supports(MethodParameter parameter) {
return Element.class.equals(parameter.getParameterType());
}
}