Hi Christopher,
I want to do this cause i am handling the synchronization myself and infact
i am using innodb so
i dont want multiple instance of the servlet, although i can handle multiple
threads in there.
I just wrote some code thats pretty similar to yours except that i use a int
and check if its >1,
also you increment it in the contructor that's neat, i do it in the
initialize.
Thanks, best regards Fahad
On 6/8/09, Christopher Schultz <ch...@christopherschultz.net> wrote:
>
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> Syed,
>
>
> On 6/7/2009 12:53 PM, syed shah wrote:
> > I want to enforce single instance creation for the servlet because I have
> > some code that serves the user requests and i want to implement caching
> and
> > handle synchronization myself, thanks and best regards Fahad
>
>
> Usually, only one instance of your servlet will be created. You could
> write some code to check for this, of course.
>
> Something like this should work:
>
> public class MyServlet extends HttpServlet
> {
> private static boolean _isInUse;
>
> public MyServlet()
> throws ServletException
> {
> super();
>
> synchronized(getClass()) {
> if(_isInUse) {
> throw new ServletException("Sorry, only one at a time");
> }
>
> _isInUse = true;
> }
> }
>
> ...
>
> public void destroy()
> {
> synchronized(getClass()) {
> _isInUse = false;
> }
> }
> }
>
> I'm not actually sure why you'd ever want to do this, though. :(
>
> - -chris
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