Multiple page wizard with validation

[Jim Kennedy <jk...@davincitechnology.com>]

 
I'm using struts 1.1 with the standard Validation stuff (see below)

      <plug-in className="org.apache.struts.validator.ValidatorPlugIn">
        <set-property property="pathnames"
value="/WEB-INF/validator-rules.xml,
                                                  /WEB-INF/validation.xml"/>
      </plug-in>


I have a multi-page form (random access tabbed interface) and I would like
to do the correct validation on the correct form (tab).  There are 3 related
jsp pages.  Formtab1.jsp, formtab2.jsp and formtab2.jsp.  Only fields on
formtab1.jsp should be validated and so on...

I understand that I would need to specify the correct page for each field in
my validation.xml file.  I also need to do a setPage(x) with my Action on
the DynaValidatorForm object.  This really is not my question.  I want to
understand how the DynaValidatorForm gets initialized.  I initialize it the
first time through my Action using:

BeanUtils.copyProperties(form, mybean);

This action is also used for the tab navigation, but I don't want to
initialize the form each time I run through the action.  

How can I sense that the form has already been initialized so I don't
overwrite new user entries on the form?  

I don't think I should have to create a separate struts action for the first
time and another for each time after that.

Here's a snippet of code:


		DynaValidatorForm _form = (DynaValidatorForm)form;
		String prop_id = req.getParameter("id");
	    	Context jndi_context = new InitialContext();
		Object obj_ref =
jndi_context.lookup("java:comp/env/ejb/props");
		RentalPropertyHome home = (RentalPropertyHome)
			PortableRemoteObject.narrow(obj_ref,
RentalPropertyHome.class);

		// could have a finder exception here if user hacks URL
		RentalProperty rental_prop = home.findByPrimaryKey(prop_id);
		RentalPropertyValue prop_vo =
rental_prop.getRentalPropertyValue();
		
		BeanUtils.copyProperties(_form, prop_vo);
		// decide which tab to make visible

		if ( page_tab.equals("1") )
		{
			_form.setPage(1);
			return mapping.findForward("editformtab1");
		}
		else if ( page_tab.equals("2") )
		{
			return mapping.findForward("editformtab2");
		}
		else if ( page_tab.equals("3") )
		{
			return mapping.findForward("editformtab3");
		}
		else if ( page_tab.equals("4") )
		{
			return mapping.findForward("editformtab4");
		}
		else
		{
			return mapping.findForward("editformtab1");
		}


thanks


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