Yes I tried if (tickets == null) Throws nullpointerexception I took it out and put the try / catch in to catch it.. and send fail.xml.
I tried moving the null check to before toArray() - Works great thank you :) Now If tickets contains only one item, it dies (toArray() is not a function) it seems that if there is only one item, it is not a list object.... how do I test for types? I mean to see if it has one item.... JD -----Original Message----- From: Geoff Howard [mailto:[EMAIL PROTECTED] Sent: Monday, November 24, 2003 8:12 AM To: [EMAIL PROTECTED] Subject: Re: Flow Basic Java language help JD Daniels wrote: > I think I need some help with something more basic than I realize... > > The idea here is that my form has checkboxes named tickets[] > When flow gets it, the toString() gives me 2,5,6 or what ever the values > are. > basically this function will build the IN sql clause (I know this is very > hacky, but I am against a noon-type deadline) > > The problem is I can't seem to check if it is null (No boxes checked) > without a nullpointer exception. Which seems really irritating.. I want to > TEST if it is null. I don't see an attempt at a null check below - perhaps you took it out? But without seeing it, are you certain you did "== null" or "!=null" instead of (assignment) "= null"? Also, I presume you tested tickets right after var tickets = cocoon.request.get("tickets[]"); and not after the attempt to call toArray() (which would be too late). var tickets = cocoon.request.get("tickets[]"); if (tickets == null) { // Handle no tickets here } Throws an NPE? If so, what is the stacktrace? Geoff > Same thing to check if it contains a _single_ item. I have a try/catch to > find the nullpointer... but of course when it has a single item it catches > it too. > > So in short: > > How do I test if tickets has no elements? > How do I check if tickets has one element to skip the for block? > > Help :S > > > > function do() > { > var tickets = cocoon.request.get("tickets[]"); > try{ > var s = "tickets.id IN ("; > > tickets = tickets.toArray(); > > for (var i = 0; i < tickets.length; i++) { > tickets[i] = "'" + tickets[i] + "'"; > if (i != "0") > { > s = s + "," + tickets[i]; > } > else > { > s = s + tickets[i]; > } > } > > var s = s + ")"; > print(s); > cocoon.request.setAttribute("sql", s); > cocoon.sendPage("postInvoice.xsp"); > } > catch(Exception) > { > print("Exception Occured"); > cocoon.sendPage("fail.xml",{error: "Please Select Some Tickets."}); > } > } > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
