Well, that's why we almost always use Strings for critical data - data conversion (like ints has many problems).
Chief among them IMHO is that if you have a textfield backed by a get/set int method, and someone submits 'abc' - you're fucked (regardless of whether it sets null, 0, -1 or any other value) :) (see Jason's mail a while ago about data conversion errors etc) M On 12/12/03 9:20 PM, "BOGAERT Mathias" ([EMAIL PROTECTED]) penned the words: > That is indeed a problem, but why would this be interesting to know? > I expect WebWork not to call any setters on my action (to set fields) when > the form field is not filled (empty). > > Also, if empty String resolves to "", why an empty Integer to null and not > new Integer(0)? > > Mathias > > -----Original Message----- > From: Mike Cannon-Brookes [mailto:[EMAIL PROTECTED] > Sent: vrijdag 12 december 2003 11:15 > To: [EMAIL PROTECTED] > Subject: Re: [OS-webwork] Empty string property now "" instead of null? > > > _exactly_ - you put it perfectly mate. > > So how do you tell the difference between a parameter, and not a parameter? > (ie the text field never existed on the form at all) :) > > Cheers, > Mike > > On 12/12/03 8:59 PM, "BOGAERT Mathias" ([EMAIL PROTECTED]) penned the > words: > >> The problem here is that a HTML form ALWAYS submits parameters as >> empty strings, you cannot 'not' send a parameter in. >> >> Mathias >> >> -----Original Message----- >> From: Dick Zetterberg [mailto:[EMAIL PROTECTED] >> Sent: vrijdag 12 december 2003 10:45 >> To: [EMAIL PROTECTED] >> Subject: Re: [OS-webwork] Empty string property now "" instead of >> null? >> >> >> In WW1.3 and 1.4 a string parameter that is empty will set the string >> property to the empty string. Not null. If your program choose to >> interpret this as null that is up to you. How can you otherwise see >> the difference between a parameter that is not sent in at all and one >> that is sent in but is empty? >> >> Cheers, >> >> Dick Zetterberg >> [EMAIL PROTECTED] >> >> ----- Original Message ----- >> From: "Lars Fischer" <[EMAIL PROTECTED]> >> To: <[EMAIL PROTECTED]> >> Sent: Thursday, December 11, 2003 12:38 PM >> Subject: Re: [OS-webwork] Empty string property now "" instead of >> null? >> >> >>> IMO it is essential that is is NULL. This has been a problem with WW >>> 1.2. and has been fixed in 1.3. It's perfectly legal for a String to >>> be null. >>> >>> If WW2 handles this as an empty String, it's a bug. >>> >>>> Hi, >>>> >>>> When a form field (single textfield) is not filled, the request >>>> param is an empty string, which translates to an empty string array >>>> (ParametersInterceptor), but my property setter is called with an >>>> empty string. Should't that be null? >>>> >>>> Cheers, >>>> Mathias >> >> >> >> ------------------------------------------------------- >> This SF.net email is sponsored by: SF.net Giveback Program. Does >> SourceForge.net help you be more productive? Does it help you create >> better code? SHARE THE LOVE, and help us help YOU! Click Here: >> http://sourceforge.net/donate/ >> _______________________________________________ >> Opensymphony-webwork mailing list >> [EMAIL PROTECTED] >> https://lists.sourceforge.net/lists/listinfo/opensymphony-webwork >> >> >> ------------------------------------------------------- >> This SF.net email is sponsored by: SF.net Giveback Program. Does >> SourceForge.net help you be more productive? Does it help you create >> better code? SHARE THE LOVE, and help us help YOU! Click Here: >> http://sourceforge.net/donate/ >> _______________________________________________ >> Opensymphony-webwork mailing list >> [EMAIL PROTECTED] >> https://lists.sourceforge.net/lists/listinfo/opensymphony-webwork > > > > ------------------------------------------------------- > This SF.net email is sponsored by: SF.net Giveback Program. Does > SourceForge.net help you be more productive? Does it help you create better > code? SHARE THE LOVE, and help us help YOU! Click Here: > http://sourceforge.net/donate/ > _______________________________________________ > Opensymphony-webwork mailing list [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/opensymphony-webwork > > > ------------------------------------------------------- > This SF.net email is sponsored by: SF.net Giveback Program. > Does SourceForge.net help you be more productive? Does it > help you create better code? SHARE THE LOVE, and help us help > YOU! Click Here: http://sourceforge.net/donate/ > _______________________________________________ > Opensymphony-webwork mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/opensymphony-webwork ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Opensymphony-webwork mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/opensymphony-webwork
