Hi !
I have been happily hacking web sites with T5 for a year and half now and is
more then pleased!
Kudos to all of you for this excellent web framework that makes coding fun
again.
And I have never ever encountered any defect in the T5 code.
Now to my problem.
I just got an error in an onActivate method that looked like it could not
happen.
When steeping through it in my debugger I really get puzzled.
A variable assigned inside a block is null after leaving the block.
It must have something to do with the "plastering" of my code. Or !?
The error I get is ..
Caused by: java.lang.NullPointerException
at
utskicket.pages.economy.EditYear._$advised$onActivate_13(EditYear.java:91)
... and in the debugger I can see that ledger is null at line 91.
In the code below I have commented what happens in the debugger.
Can anyone understand what could cause this error ...
I have stepped through the generated code without seeing anything strange.
It all looks great but when returning ledger is null.
Do I break any rule / convention with my code !?
Many many thanks in advance,
Gunnar Eketrapp, Stockholm, Sweden
Environment:
*jdk 1.6.0_22*
*t5.2.6*
*windows 7 proffesional, 32-bit*
@Property
private Ledger ledger;
@Property
private String notice;
//
------------------------------------------------------------------------------
// -- Tapestry event methods - Tapestry event methods - Tapestry event
methods --
//
------------------------------------------------------------------------------
@Log
Object onActivate(long groupId, long ledgerId) {
group = groupDAO.findById(groupId);
if (group == null)
return Index.class;
if (ledgerId != 0) {
ledger = ledgerDAO.findById(ledgerId);
if (ledger == null)
return Index.class;
if (!same(group.getId(), ledger.getGroup().getId()))
return Index.class;
hasPrevious = (null != ledgerDAO.findPrevious(ledger));
hasNext = (null != ledgerDAO.findNext(ledger));
transactionCount = transactionDAO.countTransactions(ledger);
} else {
ledger = new Ledger(); * // 1: This one returns null !!!*
Ledger lastLedger = ledgerDAO.findLast(group);
if (null == lastLedger) {
UTDate today = new UTDate();
ledger.setStartDate(new UTDate(today.getYear(), 1, 1)); *//
2: This line ends the block!*
ledger.setEndDate(new UTDate(today.getYear(), 12, 31));
} else {
ledger.setStartDate(lastLedger.getStartDate().warpYears(1));
ledger.setEndDate(lastLedger.getEndDate().warpYears(1));
}
}
* if (ledger.getClosed()) // 3: And here we crash!*
notice = "Året är stängt och kan inte ändras";
else {
if (!mayEdit())
notice = "Endast det senaste året kan ändras.";
else if (!mayEditStarts())
notice = "Startdagen kan inte ändras då det finns tidigare
år.";
}
return null;
}
