1 /* 2 * $Id: ObjectToXml.java 7976 2007-08-21 14:26:13Z dirk.olmes $ 3 * -------------------------------------------------------------------------------------- 4 * Copyright (c) MuleSource, Inc. All rights reserved. http://www.mulesource.com 5 * 6 * The software in this package is published under the terms of the CPAL v1.0 7 * license, a copy of which has been included with this distribution in the 8 * LICENSE.txt file. 9 */ 10 11 package org.mule.transformers.xml; 12 13 import org.mule.umo.UMOEventContext; 14 import org.mule.umo.UMOMessage; 15 import org.mule.umo.transformer.TransformerException; 16 17 /** 18 * <code>ObjectToXml</code> converts any object to XML using Xstream. Xstream uses 19 * some clever tricks so objects that get marshalled to XML do not need to implement 20 * any interfaces including Serializable and you don't even need to specify a default 21 * constructor. If <code>UMOMessage</code> is configured as a source type on this 22 * transformer by calling <code>setAcceptUMOMessage(true)</code> then the UMOMessage 23 * will be serialised. This is useful for transports such as TCP where the message 24 * headers would normally be lost. 25 */ 26 27 public class ObjectToXml extends AbstractXStreamTransformer 28 { 29 30 public ObjectToXml() 31 { 32 this.registerSourceType(Object.class); 33 } 34 35 public boolean isAcceptUMOMessage() 36 { 37 return this.isSourceTypeSupported(UMOMessage.class, true); 38 } 39 40 public void setAcceptUMOMessage(boolean value) 41 { 42 if (value) 43 { 44 this.registerSourceType(UMOMessage.class); 45 } 46 else 47 { 48 this.unregisterSourceType(UMOMessage.class); 49 } 50 } 51 52 public Object transform(Object src, String encoding, UMOEventContext context) throws TransformerException 53 { 54 /* 55 * If the UMOMessage source type has been registered that we can assume that 56 * the whole message is to be serialised to Xml, not just the payload. This 57 * can be useful for protocols such as tcp where the protocol does not 58 * support headers, thus the whole messgae needs to be serialized 59 */ 60 if (this.isAcceptUMOMessage() && context != null) 61 { 62 src = context.getMessage(); 63 } 64 65 return this.getXStream().toXML(src); 66 } 67 }