Multiple times bean call

[roman.mandeleil1]

Hi, I have noticed that a repeat component is calling twice to the value bean

when is being rendered. After a quick search on the web it came out to me

that it is not defined like a problem and JSF spec allows multiple calling to

the same method despite all the logic and performance harm it can make.

My question is simple: is it right ? or maybe I am missing something.

Thanks in advance.

Roman

[nbelaevski]

Hi Roman,

Yes, that's so. For iteration components model is recreated on render response phase, because developer could change it on previous phases.  As a workaround, don't do repeated requests to DB in bean code - initialize once.

[roman.mandeleil1]

Hi Nick ,

Say do you think to fix that design in 4th version? You see I don't know about the spec

but no developer will plan his method to be called arbitrary number of times.

Thanks in advance

Roman.

[nbelaevski]

Roman,

JSF has lifecycle, so during execution of lifecycle model properties can be re-requested; that's how JSF works. Please take a look at this SOF discussion: http://stackoverflow.com/questions/2090033/why-jsf-calls-getters-multiple-times .

[roman.mandeleil1]

I see, ok thanks I'll bear it in mind.

Regards.

Roman