"lihui_pang" wrote : I am evaludating JBoss ESB too. I have the similar questions, e.g. if the message is non-serializable, do we need to implement MarshalUnmarshalPlugin, or is that existing plugin for us to use?, how to register plugin? -- I can't find any sample on this. Yes, the idea is that you can add a MarshalUnmarshalPlugin for each datatype so you get direct control over how to marshal (or unmarshal) it to (from) the Message. You may want to monitor http://jira.jboss.com/jira/browse/JBESB-1643. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4141648#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...