Hi,
I'm using JavaWebServer 2.0 and i want to do this:
Each client joins a new session in which some sessionbeans are
shared between some servlets, but when the session ends i want to
check the database (for some reason which is not relevant to my prob)
I used a httpsessionbindinglistener for this..., and in the method, valueUnbound, i
check my database.
But what happens is that as soon as a second servlet joins the session
it checks my database...
It only may do this when the session ends, after about 30 minutes i think.
So, after LookupCompactDisc, if AddToBasket is started, it checks immediate
the database
Can you tell me what i did wrong, or give me another sollution to
accomplish my goal?
Thnx!
Best Regards,
Jochen Vastmans
[EMAIL PROTECTED]
// here is a piece of my code
// LookupCompactDisc will start a new session and AddToBasket will join
// that session.
// CustomerBindingListener implements the HttpSessionBindingListener.
public class LookupCompactDisc extends HttpServlet implements SingleThreadModel{
...
public void doPost(HttpServletRequest req, HttpServletResponse res){
try {
Vector compactdiscs = new Vector();
// new servletsession is created
HttpSession session = req.getSession(true);
String artist=req.getParameter("artist").toLowerCase();
String title=req.getParameter("title").toLowerCase();
cs = (CustSession)session.getValue("CustomerSession");
// a new listener is created and added to the session as new
// argument
if(cs == null){
createSessionBean();
compactdiscs=cs.lookupCompactDisc(artist,title);
session.putValue("CustomerSession",cs);
listener = new CustomerBindingListener((CustSession)cs);
session.putValue("bindings.listener",(CustomerBindingListener)listener);
}
else{
compactdiscs=cs.lookupCompactDisc(artist,title);
session.putValue("CustomerSession",cs);
listener = (CustomerBindingListener)session.getValue("bindings.listener");
listener.setCustSession((CustSession)cs);
session.putValue("bindings.listener",(CustomerBindingListener)listener); }
...
}
catch (Exception e) {
e.printStackTrace();
}
}
...
}
public class AddToBasket extends HttpServlet implements SingleThreadModel{
...
public void doPost(HttpServletRequest req, HttpServletResponse res){
try {
//Join a servletsession
HttpSession session = req.getSession(true);
cs = (CustSession)session.getValue("CustomerSession");
listener = (CustomerBindingListener)session.getValue("bindings.listener");
String pid=req.getParameter("id");
long id = (long) Integer.valueOf(pid).intValue();
cs.addItemToBasket(id,1);
// session arguments are updated with changed listener and cs
session.putValue("CustomerSession",(CustSession)cs);
listener.setCustSession((CustSession)cs);
session.putValue("bindings.listener",(CustomerBindingListener)listener);
...
}
catch (Exception e) {
e.printStackTrace();
}
}
...
}
public class CustomerBindingListener implements HttpSessionBindingListener {
...
public void valueBound(HttpSessionBindingEvent event){}
public void valueUnbound(HttpSessionBindingEvent event) {
try{
custsession.checkOrder();
}
catch(RemoteException e){
System.err.println("Cannot check order + : "+e);
}
}
...
}
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