How to bind/validate an object that is not the commandclass

[Michael Houlo]

Dear,

My SimpleFormController send a Customer(commandclass) object to my jsp which display client information.
A customer may have multiple contacts (Contact is another object which is not the commandClass).
If you click on edit on a contact, a form appears with the selected contact information.
I only can send the new information to the Controller trought the request object since it's not the commandClass...
Then, how can i use a Validator to check values ??

I'm able to save/update but not to use a validator..

Here is part of my SimpleFormController :

@Override
	protected Object formBackingObject(HttpServletRequest request) throws Exception
	{		
			setSuccessView("client");
			String cliId = request.getParameter("selectedClient");
		//	setValidator(new ContactValidator());
			return clientManager.getObjById(cliId);
	}
 
	@Override
	protected Map<Object, Object> referenceData(HttpServletRequest request,Object command, Errors error) throws Exception {
		Map<Object, Object> dataMap = new HashMap<Object, Object>();
		String pg=request.getParameter("mod");
		String action=request.getParameter("action");
 
                          if("edit".equals(action))
		{
				Contact cont = contManager.getObjById(Long.valueOf(commContId));
				dataMap.put("selectedCont", cont);
				dataMap.put("commcontid",commContId );
		}
		if(pg!=null)
			dataMap.put("pg", "client." + pg + ".inc.jsp");
		else
			dataMap.put("pg", "client.ident.inc.jsp");
		return dataMap;
	}
 
	@Override
	protected ModelAndView onSubmit(HttpServletRequest request,
			HttpServletResponse response, Object command, BindException errors)
			throws Exception {
		Client cli = (Client)command;
		
		if("contact".equals(request.getParameter("pg")))
		{
			Contact cont = new Contact();
			if(!"".equals(request.getParameter("id").trim()))
			{
				Client linkedCli = new Client();
				linkedCli.setId(request.getParameter("id"));
				cont.setCliLink(linkedCli);
			}
			cont.setComcontDescription(request.getParameter("type"));
			cont.setComcontFirstname(request.getParameter("firstname"));
			cont.setComcontLastname(request.getParameter("lastname"));
			cont.setComcontTel(request.getParameter("tel"));
			cont.setComcontMail(request.getParameter("email"));
			cont.setComcontActif(1);
			
			if(!"".equals(request.getParameter("commid")))
			{
				cont.setComcontId(Long.valueOf(request.getParameter("commid")));
				contManager.update(cont);
			}
			else
				contManager.saveObj(cont);
			
			clientManager.refreshClient(cli);
		}
		return showForm(request,response,errors);
	}
 

Here is part of my jsp :

<c:if test="${not empty commcontid}">
<div id="manageArea">
	<form:form method="POST" >
		PSN : <input type="text" name="id" id="id" value="${selectedCont.cliLink.id}"/><br/>
		Type : <input type="text" name="type" id="type" value="${selectedCont.comcontDescription}"/><br/>
		Nom : <input type="text" name="firstname" id="firstname" value="${selectedCont.comcontFirstname}"/><br/>
		Prénom : <input type="text" name="lastname" id="lastname" value="${selectedCont.comcontLastname}"/><br/>
		Courriel prof. <input type="text" name="email" id="email" value="${selectedCont.comcontMail}"/><br/>
		Tél prof. <input type="text" name="tel" id="tel" value="${selectedCont.comcontTel}"/><br/>	
		<input type="hidden" name="commid" value="${selectedCont.comcontId}"/>
		<input type="hidden" value="commcont" name="pg"/>
		<input type="hidden" value="${cli.id}" name="selCust"/>
 

Could you please tell me how can I do it ? What's the good way to do it ?
Thanks