Thanx a lot, I have some basic validation on the datagrid itself. I allow the user to only enter 5 rows at once, and I am preparing a method to send all of those 5 rows at once to Java, validate them and return only errors.
Thanx again Claudiu for your help. Regards, Adnan --- In [email protected], claudiu ursica <the_bran...@...> wrote: > > Ok I see your point. However it is really a bad idea to make a service call > for > each row. You need to perform validation on client side if possible. Having > server calls for each row will be a performance penalty for your app if > you'll > have many rows to validate. (You can still keep data validation o server > client > code can be de-compiled and read by anyone). If the validation logic is too > complex and all stored into db (as I gather from here "I take information > from > the row and do some complex queries from about 20+tables with PL/SQL"), then > send a batch of rows to the java method and validate them all at once as I > said > earlier. It really depends on your architecture ... I kind of always was able > to > have enough business logic on the client to avoid unnecessary calls to the > server. In your case It might be impossible if java needs to talk to db for > validation. Normally you should have a java layer to handle that business > logic > and only commit to db if data is valid. If so it would be easy to have that > logic duplicated on client side, and you'll be happy cause you avoid calls > and > will cal java/lcds only on save button click. Otherwise probably sending the > whole datagrid at once will solve your issue... > > > Still if you allow user to input directly into rows is like filling a form > you'll need to perform at least some basic validation on the cell's focus > out.... > > HTH, > C > > > > > ________________________________ > From: Adnan <ad...@...> > To: [email protected] > Sent: Tue, August 10, 2010 4:35:28 PM > Subject: [flexcoders] Re: Flex 4: addEventListener in loop > > > The datagrid is editable and populated directly, once I hit the save button I > need to validate the data, I take information from the row and do some > complex > queries from about 20+tables with PL/SQL, comparing some values and so on, so > if > the values are correct I save that row using a service from LCDS. > > hope this helps? > > Sending the whole datagrid data once to java? hm, seems to be a good idea > > --- In [email protected], claudiu ursica <the_braniak@> wrote: > > > > > > > > Why are you calling java can't you just validate on client? > > Presumably not... can't you just pass the whole datagrid data once to java > > and > > > perform once there the validation? > > > > How do you populate the datagrid in the first place? If you get data from > > the > > server you should already have it valid ... > > > > Share more info on this if you can, > > C > > > > > > > > ________________________________ > > From: Adnan <adnan@> > > To: [email protected] > > Sent: Tue, August 10, 2010 3:58:35 PM > > Subject: [flexcoders] Flex 4: addEventListener in loop > > > > > > Hello, > > > > I have a for loop like (pseudocode); > > > > for (var i:int=0; i < 10; i++) > > { > > callJava.method(i); > > callJava.addEventListener("result", finalMethod); > > > > if (finallMethod) == "VAL: 1"; //validation failled, break the loop > > } > > > > private function finalMethod(e:ResultEvent):String > > { > > return "VAL: " + e.currentTarget.lastResult; > > } > > > > The loop is called to validate rows in a datagrid. I am fetching each row > > and > > the performing a check using a Java method, if the test passes, I need to > > continue to take the next row and so on. There is no point to waste time on > > looping thru 10 rows if the validation falls on the first row and so on. > > > > > > How can I handle this case in flex, as my call/result is asynchronous and I > >will > > > > get it few milliseconds later, by the time I get the result for the first > > value > > > > my loop will already have completed. > > > > All help is appropriated. > > Thanx, > > Adnan > > >
