Question
Atos Syntel
IN
Last activity: 16 Dec 2019 7:38 EST
Asynchronus Data page loading - how and where to use it ?
I wanted to test Asynchronus Data page loading using Load-DataPage Method, please find screenshots of Activity steps(Steps 1-3 are inactive) and tracer events, i can see that only when i refer the D page in the property set method of Step 5 it is loading the Data for that D page not in step 4.
what am i doing wrong here, do i have to use a pool ID and Connect Wait combination ?
Also it will be helpful to know in which scenarios this Asynchronus load will be used and when to use Pool ID.
I have gone through the pega help, could not get the complete picture of this functionality.
***Edited by Moderator: Lochan to update platform capability tags***
Accepted Solution
Labb
GB
Hey Dilipan,
Believe that the asynchronous loading of a data page is mainly used for user experience when loading data pages for sections when it's large data and not for activities. for example at the start of a flow you can begin to load a data page that will be used on a future screen, this way a user won't have to wait for it to load upon clicking the submit button.
So when you reference the data page in step 5 Pega won't of loaded it into memory yet and that's why it gets a fresh instance.
PoolID's are used with "Connect-Wait" methods to allow Pega to wait for those data pages to load. so for example in your activity if you had a "Connect-Wait" method after you load-datapage method and they both have the same PoolID and then referenced the data page page it shouldn't load it at step 5.
Thanks,
Leigh
Atos Syntel
IN
Thanks Leigh for the info, it worked when i used pool ID and Connect Wait method.
but I still have one doubt, do you we have to use pool ID and Connect Wait method everytime we use Load-DataPage method, won't the D page load if we don't have pool ID and Connect Wait method ?
pool ID is an optional parameter in Load-DataPage method.
Atos Syntel
IN
I was able to test the D page load with and without pool ID successfully.
Without pool ID: it takes few secs for the D page to load after step 4(in below image), so if you refer the D page in the immediate next step (step 5), The D page loading in the background thread will not be used(since it is still loading), if you trace the activity you will find that the D page is loaded again(synchronously) in the main thread when we reach step 5. so in situvation like this you can add a Connect-Wait method(add a pool ID in step 4) in between step 4 and 5, so that the activity will wait for the D page to load in the background thread.
If you are referrring the page at a later point of time(few secs/mins after step 4), then you won't need pool ID and Connect-Wait method since there is sufficient interval for the D page to load and become available.
Pegasystems Inc.
IN
Hi Dilipan,
The content of Data page which is loaded using Load-DataPage method is only be available in the tracer if you select ADP Load in tracer settings.