how to call one moethod after another

ashutoshdeora Jun 5, 2009 11:05 AM

i have methods

Code:
METHOD A(){
QUERY 1 -  it will fetch small amount of data - i put this data in rich:datatable (TABLE  1) 
 }

Code:
METHOD B(){
QUERY 2 - it will fetch huge amount of data (it will take some time to do it) 
 i will put this data also in rich:datatable (TABLE  1) 
}

i have only one click to perform this
condition:- i can click only once
i have to complete method A then only i can execute METHOD B
i cannot call method B in Method A

now any budy can give me any idea for this
session bean is the class from where the methods will be invoked and it will fill the data in a datatable

1. Re: how to call one moethod after another

jimk1723 Jun 5, 2009 7:29 PM (in response to ashutoshdeora)
It feels like there are some requirements missing here. Do you need the call to B() to not block since you're expecting it to take a while?

If not, could the solution be as simple as:

Method C(){ A(); B(); }

Other methods off the top of my head, using RichFaces...

Add a a4j:jsFunction call to B() that updates the rich:datatable

Have your a4j:commandButton call A() and reRender the rich:datatable

In the onComplete for the commandButton, call the jsFunction.

Using a synchronous events,

Call A() in the same manner as above

Kick off a a4j:poll onclick, have it update the datatable

Have A() raise an asynchronous event

Have B() handle the event and update the model for the rich:datatable
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2. Re: how to call one moethod after another

ashutoshdeora Jun 8, 2009 6:10 AM (in response to ashutoshdeora)

thanks for the suggestion
i am using same kind of concept that you have suggested
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3. Re: how to call one moethod after another

lvdberg Jun 8, 2009 1:46 PM (in response to ashutoshdeora)

You could do this by defining the different actions before the navigation riles in youe X.page.xml file.
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