/*
* 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.servicemix.components.wsif;
import org.apache.servicemix.jbi.jaxp.SourceTransformer;
import org.apache.servicemix.jbi.util.DOMUtil;
import org.apache.servicemix.jbi.util.LazyDOMSource;
import org.apache.wsif.WSIFException;
import org.apache.wsif.WSIFMessage;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.xml.sax.SAXException;
import javax.jbi.messaging.MessageExchange;
import javax.jbi.messaging.MessagingException;
import javax.jbi.messaging.NormalizedMessage;
import javax.wsdl.Part;
import javax.xml.namespace.QName;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.TransformerException;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
/**
* A class which marshalls a WSIF messages into and out of NMS
*
* @version $Revision: 431309 $
*/
public class WSIFMarshaler {
public static final String WSDL_WRAPPER_NAMESPACE = "http://java.sun.com/xml/ns/jbi/wsdl-11-wrapper";
private SourceTransformer transformer = new SourceTransformer();
public void toNMS(final MessageExchange exchange, final NormalizedMessage nmsMessage, final WSIFOperationInfo operationInfo, final WSIFMessage wsifMessage) throws WSIFException, MessagingException {
addNmsProperties(nmsMessage, wsifMessage);
for (Iterator iter = wsifMessage.getPartNames(); iter.hasNext();) {
String name = (String) iter.next();
Object value = wsifMessage.getObjectPart(name);
nmsMessage.setProperty(name, value);
}
nmsMessage.setContent(new LazyDOMSource() {
protected Node loadNode() {
return createResultDocument(exchange, nmsMessage, operationInfo, wsifMessage);
}
});
}
public void fromNMS(WSIFOperationInfo operationInfo, WSIFMessage wsifMessage, NormalizedMessage nmsMessage, Object body) throws WSIFException, MessagingException {
addWSIFProperties(wsifMessage, nmsMessage);
try {
Element element = transformer.toDOMElement(nmsMessage);
Map parts = wsifMessage.getMessageDefinition().getParts();
for (Iterator iter = parts.entrySet().iterator(); iter.hasNext();) {
Map.Entry entry = (Map.Entry) iter.next();
String name = (String) entry.getKey();
Part part = (Part) entry.getValue();
Object value = getPartValue(name, part, nmsMessage, element);
wsifMessage.setObjectPart(name, value);
}
}
catch (TransformerException e) {
throw new MessagingException(e);
}
catch (ParserConfigurationException e) {
throw new MessagingException(e);
}
catch (IOException e) {
throw new MessagingException(e);
}
catch (SAXException e) {
throw new MessagingException(e);
}
}
// Properties
//-------------------------------------------------------------------------
public SourceTransformer getTransformer() {
return transformer;
}
public void setTransformer(SourceTransformer transformer) {
this.transformer = transformer;
}
// Implementation methods
//-------------------------------------------------------------------------
protected void addNmsProperties(NormalizedMessage nmsMessage, WSIFMessage wsifMessage) throws WSIFException {
Iterator iter = wsifMessage.getPartNames();
while (iter.hasNext()) {
String name = (String) iter.next();
Object value = wsifMessage.getObjectPart(name);
nmsMessage.setProperty(name, value);
}
}
protected void addWSIFProperties(WSIFMessage wsifMessage, NormalizedMessage nmsMessage) throws WSIFException {
for (Iterator iter = nmsMessage.getPropertyNames().iterator(); iter.hasNext();) {
String name = (String) iter.next();
Object value = nmsMessage.getProperty(name);
if (shouldIncludeHeader(nmsMessage, name, value)) {
wsifMessage.setObjectPart(name, value);
}
}
}
/**
* Decides whether or not the given header should be included in the WSIF message.
* By default this includes all values
*/
protected boolean shouldIncludeHeader(NormalizedMessage normalizedMessage, String name, Object value) {
return true;
}
protected Object getPartValue(String name, Part part, NormalizedMessage nmsMessage, Element body) throws MessagingException, TransformerException, ParserConfigurationException, IOException, SAXException {
if (isSimpleType(part)) {
// lets extract the text content
return DOMUtil.getElementText(body).trim();
}
// TODO we should be extracting each part of the XML using XPath
return transformer.toDOMNode(nmsMessage);
}
/**
* Returns true if the given part is a string type
*/
protected boolean isSimpleType(Part part) {
QName typeName = part.getTypeName();
if (typeName != null) {
return "http://www.w3.org/2001/XMLSchema".equals(typeName.getNamespaceURI());
}
return false;
}
protected Node createResultDocument(MessageExchange exchange, NormalizedMessage normalizedMessage, WSIFOperationInfo operationInfo, WSIFMessage wsifMessage) {
try {
Document document = transformer.createDocument();
Element root = document.createElementNS(WSDL_WRAPPER_NAMESPACE, "jbi:message");
document.appendChild(root);
root.setAttribute("xmlns:jbi", WSDL_WRAPPER_NAMESPACE);
QName operation = exchange.getOperation();
String operationName = "unknown";
if (operation != null) {
operationName = operation.getLocalPart();
String uri = operation.getNamespaceURI();
if (uri != null && uri.length() > 0) {
root.setAttribute("xmlns:op", uri);
}
}
root.setAttribute("version", "1.0");
root.setAttribute("type", "op:" + operationName);
root.setAttribute("name", operationName);
for (Iterator iter = wsifMessage.getPartNames(); iter.hasNext();) {
String name = (String) iter.next();
Object value = normalizedMessage.getProperty(name);
Element element = document.createElementNS(WSDL_WRAPPER_NAMESPACE, "jbi:part");
root.appendChild(element);
addPartValue(element, name, value);
}
return document;
}
catch (Exception e) {
throw new FailedToCreateDOMException(e);
}
}
protected void addPartValue(Element element, String name, Object value) {
if (value instanceof Document) {
Document doc = (Document) value;
Element root = doc.getDocumentElement();
doc.removeChild(root);
element.appendChild(root);
}
else if (value != null) {
String text = value.toString();
element.appendChild(element.getOwnerDocument().createTextNode(text));
}
}
}