Difference between TUniTimer and TUniThreadTimer

[harishrohokale]

Can anyone explain what is the difference between TUniTimer and TUniThreadTimer?

 

We have observed few differences:

1. TUniTimer supports ClientEvent, TUniThreadTimer does not.

2. TUniTimer has option to set RunOnce, TUniThreadTimer does not.

[Farshad Mohajeri]

TUniTimer has a client side component which is a Javascript timer. When timer event occurs on client it sends an Ajax request and server will serve it in a server side handler. It works synchronously with its session and can interact with visual controls.

 

TuniThreadTimer is a server side timer. It runs in server in its own thread and has no connection to client side. It is not bound to any session. It can be used to run server side tasks and other internal tasks.

[AlbertoVesx]

Is it possible to set Unitimer1.enabled := False from Tunitimer.ontimer event? When I do this, client keeps sending ajax request . Should I stop it using javascrip using session.addjs(); could someone show me how to to do this?

[Farshad Mohajeri]

Is it possible to set Unitimer1.enabled := False from Tunitimer.ontimer event? When I do this, client keeps sending ajax request . Should I stop it using javascrip using session.addjs(); could someone show me how to to do this?

 

Yes,you can but if your timer is too fast it may take a while until it stops.

 

What is the interval of your timer?

 

You can also set ChainMode to True to see if it makes any difference.

[AlbertoVesx]

Hi, 5 seconds.My idea is to stop unitimer at the begining of the event and restart it after finish his function. Something like this:

ontimEvent
begin

   ontimer.enabled := False;

   somefunctionshere();

   ontimer.enabled := True;

end;

But the ontimer keeps adding events

[Farshad Mohajeri]

Hi, 5 seconds.My idea is to stop unitimer at the begining of the event and restart it after finish his function. Something like this:

ontimEvent
begin

   ontimer.enabled := False;

   somefunctionshere();

   ontimer.enabled := True;

end;

But the ontimer keeps adding events

 

Use ChainMode = True for this.

In this mode timer will not create more events until pending event is handled.

[AlbertoVesx]

It worked, Thank you.

[mos]

If I want to update a TUniTreeView via a thread with data from a database.  Would I need to use a TUniThreadTimer to retreive the data from the DB into some internal list

and then have a TUniTimer process this list and update the treeview? 

 

I assume I can't just use a TUniTimer by itself to retrieve the data from the DB and update the treeview?

[zilav]

I assume I can't just use a TUniTimer by itself to retrieve the data from the DB and update the treeview?

You can. Get the data and update tree in TUniTimer event, it is called from client but executed on the server.

[Tokay]

May by better way is to rename components to TServerTimer and TClientTimer respectively. And set both old components as depricated.