Re: [rules-users] Global variable error message
Trying to set an undeclared global is done via an API call; basically
there's just one thing that can go wrong.
Using a global that has not been initialized at all, or incorrectly initialized
might cause a NullPointerException or several other unpleasant errors.
Moreover, it may happen anywhere in consequence code or even in a
LHS condition), and so the stack dump isn't quite as simple as in the
other scenario.
FWIW, I find that the stack trace does provide a very good indication
where the problem is. With 5.3.0 final I see for globalDate == null:
Caused by: [Error: null pointer or function not found: getTime]
[Near : {... dob.time >= globalDate.getTime() ....}]
Don't expect a Silver Bullet, just because it's Drools - it's just software
;-)
-W
On 19/01/2012, domingo <sprabakkar(a)gmail.com> wrote:
Hi,
Thanks for your attention,
I am using global in my rule file(drl), I did some experiment with globals
my finding as follows...
1. declare both rules engine and drl file ==> all fine working properly.
2. I intentionaly commented out the global declaration in drl file and set
the global in the rules engine, it gives very clear error message like
'Unexpected global [identifiername]' and rule file is not compiled ==> this
is also fine very clear what is happening.
3. I declare the globals in drl file and intentionally not set the globals
into rules engine ==> I am getting the following error
message..."org.drools.runtime.rule.ConsequenceException: rule: XXXXX VVVV
rule_1"
my question here is the same error why the error message is different and
test no 3 . the error message is not clear.
This makes more difficult in debugging.
Please let me know if other way of display the correct error messahe. I
completely check the drools-compiler test files not getting any help.
drools guru's please advise me.
-----
with kind regards,
--
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