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From "Cyril Vidal" <cy...@planetexml.com>
Subject Re: xsp session logicsheet
Date Wed, 05 Feb 2003 10:00:31 GMT

Thanks for you response.
hum, I guess actions are still a little bit too complex for me, regarding my
knowledge of Cocoon...

Isn't it really possible to add merely values to the same session's
attribute with the ESQL logicsheet? It   sounds  odd...

Cyril.

> Hi Cyril
> Why don't use an action, I think it's better not to have too much Java
code
> in your xsp-pages.
> In an action you can take your code as it is.
> Cheers
> Beat
>
> > Hi,
> >
> > I would like to deal with session through xsp, and serve as far as
> > possible
> > the same goal as with the following servlet: e.g put all the parameters
> > named 'item' in the object of type Vector 'items' bound to the current
> > session, so that it would be possible to list at any time all of the
items
> > chosen so far by the client in his session.
> >
> >  public void doGet(HttpServletRequest req, HttpServletResponse res)
> >                                throws ServletException, IOException {
> >     res.setContentType("text/html");
> >     PrintWriter out = res.getWriter();
> >
> >     // Get the current session object, create one if necessary.
> >     HttpSession session = req.getSession(true);
> >
> >     // Cart items are maintained in the session object.
> >    Vector items = (Vector)session.getAttribute("cart.items");
> >         if (items == null) { items = new Vector(10,5);}
> >
> >       String item = req.getParameter("item");
> >       items.add(item);
> >
> >        session.setAttribute("cart.items",items);
> >
> >     out.println("<HTML><HEAD><TITLE>SessionTracker
> > modifie</TITLE></HEAD>");
> >     out.println("<BODY><H1>Session Tracking Demo</H1>");
> >
> >     // Print the current cart items.
> >     out.println("You currently have the following items in your
> > cart:<BR>");
> >     if (items == null) {
> >       out.println("<B>None</B>");
> >     }
> >     else {
> >       out.println("<UL>");
> >       for (int i = 0; i < items.size(); i++) {
> >         out.println("<LI>" + items.get(i));
> >       }
> >       out.println("</UL>");
> >     }
> >
> >
> >     out.println("</BODY></HTML>");
> >   }
> > }
> >
> >  Below is the xsp i've written for the moment,: this is working fine,
but
> > does not do what I want: because each time the client chooses an item
and
> > pass it via the parameter 'item', instead of being added in the object
> > cart.items, its value overrides this of the preceding parameter.
> >
> > <?xml version="1.0"?>
> >
> > <xsp:page
> >
> > xmlns:xsp="http://apache.org/xsp"
> >
> > xmlns:xsp-session="http://apache.org/xsp/session/2.0"
> >
> > xmlns:xsp-request="http://apache.org/xsp/request/2.0"
> >
> > create-session="true">
> >
> > <html>
> >
> > <xsp-session:set-attribute name="cart.items"><xsp-request:get-parameter
> > name="item"/></xsp-session:set-attribute>
> >
> > <b>You currently have the following items in your cart:</b>
> > <xsp-session:get-attribute name="cart.items"/>
> >
> > <br/>
> >
> > <b>Your session was created:</b> <xsp-session:get-creation-time
> > as="string"/>
> >
> > </html>
> >
> > </xsp:page>
> >
> > Some of you would know how I can improve my code? Indeed, I would like
> > cart.items to be like a Vector, so that it would be possible to put
merely
> > values onto it.
> > Thanks in advance for your help,
> > Cyril.
> >
> >
> >
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