com.sun.messaging.xml.MessageTransformer Maven / Gradle / Ivy
/*
* Copyright (c) 2000, 2020 Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2021 Contributors to the Eclipse Foundation
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.messaging.xml;
import java.util.*;
import java.io.*;
import jakarta.jms.Message;
import jakarta.jms.BytesMessage;
import jakarta.jms.Session;
import jakarta.xml.soap.*;
import com.sun.messaging.jmq.util.io.FilteringObjectInputStream;
/**
* The Transformer class encapsulates the functionality to transform SOAP and JMS messages.
*/
public class MessageTransformer {
/** Private Constructor */
private MessageTransformer() {
}
/**
* Transforms a jakarta.xml.soap.SOAPMessage message into a jakarta.jms.Message message.
*
* @param soapMessage the SOAPMessage to be converted to the JMS Message.
* @param session The JMS Session to be used to construct the JMS Message.
*
* @exception MessageTransformerException If any error is encountered when transforming the message.
*/
public static Message SOAPMessageIntoJMSMessage(SOAPMessage soapMessage, Session session) throws MessageTransformerException {
try {
/**
* Construct a bytes message object. This is to make sure the utility works across all vendors.
*/
BytesMessage bmessage = session.createBytesMessage();
/**
* This is here to make sure that RI's bad SOAP implementation will get updated for internal buffers.
*/
soapMessage.saveChanges();
/**
* Write SOAP MIME headers.
*/
writeMimeHeaders(soapMessage, bmessage);
/**
* write message body to byte array output stream.
*/
writeSOAPBody(soapMessage, bmessage);
return bmessage;
} catch (Exception e) {
e.printStackTrace();
throw new MessageTransformerException(e);
}
}
/**
* Extracts a jakarta.xml.soap.SOAPMessage object from the jakarta.jms.Message object into which
* it was transformed using the SOAPMessageIntoJMSMessage method.
*
* The MessageFactory parameter is used to construct the jakarta.xml.soap.SOAPMessage object.
*
* If MessageFactory is null then the default SOAP MessageFactory will be used to construct
* the SOAP message.
*
* @param message The JMS message from which the SOAP message is to be extracted.
* @param messageFactory The SOAP MessageFactory to be used to contruct the SOAP message.
*
* @exception MessageTransformerException If any error is encountered when extracting the message.
*/
public static SOAPMessage SOAPMessageFromJMSMessage(Message message, MessageFactory messageFactory) throws MessageTransformerException {
SOAPMessage soapMessage = null;
BytesMessage bmessage = (BytesMessage) message;
try {
// 1. construct mime header
int mimeLength = bmessage.readInt();
byte[] mbuf = new byte[mimeLength];
bmessage.readBytes(mbuf, mimeLength);
ByteArrayInputStream mbin = new ByteArrayInputStream(mbuf);
ObjectInputStream oi = new FilteringObjectInputStream(mbin);
Hashtable ht = (Hashtable) oi.readObject();
MimeHeaders mimeHeaders = hashtableToMime(ht);
// 2. get soap body stream.
int bodyLength = bmessage.readInt();
byte[] buf = new byte[bodyLength];
bmessage.readBytes(buf, bodyLength);
ByteArrayInputStream bin = new ByteArrayInputStream(buf);
if (messageFactory == null) {
messageFactory = getMessageFactory();
}
// 3. construct soap message object.
soapMessage = messageFactory.createMessage(mimeHeaders, bin);
} catch (Exception e) {
throw new MessageTransformerException(e);
}
return soapMessage;
}
/**
* Write MIME headers to JMS message body.
*/
private static void writeMimeHeaders(SOAPMessage soapMessage, BytesMessage bmessage) throws Exception {
/**
* Convert JAXM MIME headers to Hashtable
*/
MimeHeaders mimeHeaders = soapMessage.getMimeHeaders();
Hashtable hashtable = MimeToHashtable(mimeHeaders);
/**
* Write hashtable to object output stream
*/
ByteArrayOutputStream mimeOut = new ByteArrayOutputStream();
ObjectOutputStream oo = new ObjectOutputStream(mimeOut);
oo.writeObject(hashtable);
oo.flush();
oo.close();
/**
* convert mime output stream to byte array.
*/
byte[] mimebuf = mimeOut.toByteArray();
/**
* Write buffer length to JMS bytes message.
*/
bmessage.writeInt(mimebuf.length);
/**
* Write header byte[] to JMS bytes message.
*/
bmessage.writeBytes(mimebuf);
/**
* Close streams.
*/
mimeOut.close();
// System.out.println ("SOAP to JMS mime length: " + mimebuf.length);
}
/**
* Write SOAP message body to JMS bytes message.
*/
private static void writeSOAPBody(SOAPMessage soapMessage, BytesMessage bmessage) throws Exception {
ByteArrayOutputStream bodyOut = new ByteArrayOutputStream();
soapMessage.writeTo(bodyOut);
/**
* Convert byte array output stream to byte[].
*/
byte[] buf = bodyOut.toByteArray();
/**
* Write message body byte[] length.
*/
bmessage.writeInt(buf.length);
/**
* Write message body byte[] buffer.
*/
bmessage.writeBytes(buf);
bodyOut.close();
// System.out.println ("SOAP to JMS body length: " + buf.length);
}
/**
* Convert MimeHeaders to Hashtable. The hashtable is then used to write to JMS BytesMessage.
*/
private static Hashtable MimeToHashtable(MimeHeaders mimeHeaders) {
Hashtable hashtable = new Hashtable();
Iterator it = mimeHeaders.getAllHeaders();
while (it.hasNext()) {
MimeHeader mh = (MimeHeader) it.next();
hashtable.put(mh.getName(), mh.getValue());
// System.out.println("name: " + mh.getName() + " Val: " + mh.getValue());
}
return hashtable;
}
/**
* Convert Hashtable to MimeHeaders. Used when converting from JMS to SOAP messages.
*/
private static MimeHeaders hashtableToMime(Hashtable hashtable) {
MimeHeaders mimeHeaders = new MimeHeaders();
Enumeration enm = hashtable.keys();
while (enm.hasMoreElements()) {
Object key = enm.nextElement();
mimeHeaders.addHeader((String) key, (String) hashtable.get(key));
}
return mimeHeaders;
}
private static MessageFactory getMessageFactory() throws SOAPException {
return MessageFactory.newInstance();
}
}