Andrew, Thanks for quick response. I will definately use the PhaseListener to debug the problem as you mentioned . Meanwhile i was thinking maybe i misrepresented the problem . Here is the situation I have textfield with a4j onblur event As i tab out it reRenders other fields on the form . But while reRendering dropdown fields, it picks one element after the other in that dropdown , i could see this on the page dropdown showing one element after the other. And then cursor goes in wait mode for a while. Finally i get the correct results
I understand the reason to this behaviour. As these dropdowns appear later in the page, JSF tries render them as part of rendering the page. But i have already rendered them using ajax onblur event. As i couldn't do much in the JSF page , So in the backing bean i am generating the dropdown only if its null. It still didnt help.I have posted the snippets in the post http://www.nabble.com/Performance-issue-%3A-Setting-Dropdown-value-from-onblur-event-tf4037597.html. As i am sure i am making some small mistake somewhere like in this post, i would appreciate your time in taking a look at the code snippets in other post Andrew Robinson-5 wrote: > > It is extremely hard to comment on that post, as performance issues > can be anywhere in the code, especially since you are hitting the > database. What I like to do, is create a debugging phase listener that > prints out the current phase and then times the phase by adding the > start time in the start of the phase into the request map and then > performing a time difference in the end phase method. That way you can > see what phase is slowing you down. > > Also, I have witnessed IE6 extremely slow to re-render SELECT boxes > for some unknown reason. It may be because of the fact that IE6 uses > an MFC control, but not sure. Your best bet is to use the above > technique, a debugger and step through the code, an client side > debugger (like firebug for firefox) to time the javascript or use a > performance tool. > > On 7/6/07, bansi <[EMAIL PROTECTED]> wrote: >> >> Thanks Andrew for the catch it works like charm now. I will appreciate >> your >> time in taking a look at my other post : >> http://www.nabble.com/Performance-issue-%3A-Setting-Dropdown-value-from-onblur-event-tf4037597.html. >> >> >> >> Andrew Robinson-5 wrote: >> > >> > Make sure you have the list boxes in the reRender property of the a4j >> > command button >> > >> > On 7/6/07, bansi <[EMAIL PROTECTED]> wrote: >> >> >> >> I have observed a4j:commandButton works only on Page Refresh >> >> >> >> Here is the situation >> >> >> >> I am using two h:selectManyListbox to moves Roles i.e. All Roles to >> >> selected >> >> Roles using <h:commandButton value="-->" /> >> >> >> >> h:commandButton works perfectly fine , the only limitation is after >> >> moving >> >> the value from left to right Listbox, whole page is automatically >> >> refreshed >> >> & the cursor moves to the top of the page >> >> >> >> This is where we thought ajax4jsf would come in handy & started using >> >> a4j:commandButton instead of h:commandButton. >> >> The result is when we click the a4j:commandButton it doesnt moves the >> >> value >> >> from left to right Listbox. Then we did page refreshed then only the >> >> value >> >> moved from left to right ListBox. Quite Amazing !!!. This is totally >> >> opposite to behaviour of ajax >> >> >> >> We want a4j:commandButton to move the values from left to right >> ListBox >> >> without page refresh . Any pointers/suggestions will be highly >> >> appreciated >> >> >> >> >> >> -- >> >> View this message in context: >> >> >> http://www.nabble.com/h%3AcommandButton-a4j%3AcommandButton-does-Page-Refresh-----tf4037659.html#a11471154 >> >> Sent from the MyFaces - Users mailing list archive at Nabble.com. >> >> >> >> >> > >> > >> >> -- >> View this message in context: >> http://www.nabble.com/h%3AcommandButton-a4j%3AcommandButton-does-Page-Refresh-----tf4037659.html#a11472288 >> Sent from the MyFaces - Users mailing list archive at Nabble.com. >> >> > > -- View this message in context: http://www.nabble.com/h%3AcommandButton-a4j%3AcommandButton-does-Page-Refresh-----tf4037659.html#a11472824 Sent from the MyFaces - Users mailing list archive at Nabble.com.
