[rules-users] Rules not firing when facts asserted in a rule RHS in 5.0 - diagnosed with workaround (but not fixed)

Wed Dec 1 18:25:43 EST 2010

On 12/1/10 6:04 PM, Tihomir Surdilovic wrote:
>
> On 12/1/10 5:09 PM, Chris Selwyn wrote:
>> Having just looked in the Drools JIRA repository, I pretty sure that 
>> it is the same issue as was reported in JBRULES-2140 
>> <https://jira.jboss.org/browse/JBRULES-2140>.
Fix for JBRULES-2140 <https://jira.jboss.org/browse/JBRULES-2140>  will 
be included in the next release of the supported bits (5.1). Since you 
already are using supported bits I assume you know where to check for 
updates.
If you cannot upgrade, open a ticket with JBoss support and request a 
backport fix.

>> That entry has a repro.
> thanks for finding
>>
>> I am interested as to what you mean by "right around the corner"?
>>
> this month
>> Here is a repro anyway...
>>
>> <QUOTE>
>> package rulestest
>> global java.util.logging.Logger logger
>>
>> declare QuestionValidation
>>     question: String
>>     mandatory: Boolean
>>     state: String
>>     type: String
>> end
>>
>> function void testfunc() {
>> System.out.println("testfunc called");
>>
>> }
>>
>> rule 'init'
>> dialect "mvel"
>> when
>>     eval(true)
>> then
>>     QuestionValidation qv = new QuestionValidation();
>>     qv.setState("ss");
>>     qv.setQuestion("qq");
>>     insert(qv);
>>     logger.info("Hello world");
>>
>> end
>>
>> rule 'test'
>> dialect "mvel"
>> when
>>     $qv: QuestionValidation()
>> then
>>     logger.info("Found a qv " + $qv);
>>
>> end
>> </QUOTE>
>>
>> If the testfunc is present then the "test" rule never fires. If it is 
>> not present then the "test" rule fires just fine.
>>
>> Chris
>>
>> On 01/12/2010 21:47, Tihomir Surdilovic wrote:
>>> Hi Chris, could you attach the repository export xml from your repo 
>>> that I can use to reproduce the issue with? BRMS 5.1 (supported 
>>> bits) is right around the corner and I would be able to tell you if 
>>> the issue still persists with the currently tested bits for 5.1.
>>>
>>> Thanks.
>>> Tihomir
>>>
>>> On 12/1/10 4:29 PM, Chris Selwyn wrote:
>>>> Having spent all day on this one, I have finally got to the bottom 
>>>> of it.
>>>>
>>>> The problem is reproducible if I have /both/ a declarative fact 
>>>> model /and/ a function in my rules.
>>>> It doesn't matter whether the function is called or not... It's 
>>>> presence is enough to  cause the problem.
>>>>
>>>> Any rule that is dependent on the existence of an instance of the 
>>>> declarative fact model where the instance is created in the RHS of 
>>>> another rule will not fire.
>>>>
>>>> I suspect that this is a bug that has been fixed in 5.1 because I 
>>>> have been using this technique in Drools 5.1... It's only since 
>>>> downgrading to the (supported) JBoss Rules 5.0 that I have 
>>>> experienced the problem.
>>>>
>>>> Does anyone know if there is a fix in the 5.0 branch?
>>>>
>>>> If I create a "real" Java class and upload it in a jar file to the 
>>>> Guvnor and use that in place of the declarative model then the 
>>>> problem does not happen.
>>>> This is a workaround in the short term but I would much prefer not 
>>>> to have to do this.
>>>>
>>>> Chris Selwyn
>>>>
>>>>
>>>> On 01/12/2010 15:14, Chris Selwyn wrote:
>>>>> Yes the package is "SWWB2BOutgoing" but it looks as though the 
>>>>> package name simple doesn't get reported in the log file.
>>>>>
>>>>> I have been debugging through this thing and where I've got to so 
>>>>> far is that I am getting two (and maybe more) entries for the 
>>>>> class "SWWB2BOutgoing.QuestionValidation" in the 
>>>>> ObjectTypeConfigurationRepository.
>>>>> So my current question is "How is this possible?" Is it maybe a 
>>>>> classloader issue?
>>>>>
>>>>> Chris
>>>>>
>>>>>
>>>>> On 01/12/2010 12:05, Wolfgang Laun wrote:
>>>>>> A closer look:
>>>>>>
>>>>>> On 1 December 2010 11:13, Chris Selwyn <chris at selwyn-family.me.uk 
>>>>>> <mailto:chris at selwyn-family.me.uk>> wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>     I can see the facts being inserted in the log as follows
>>>>>>     [#|2010-12-01T09:19:16.723+0000|INFO|sun-appserver2.1|javax.enterprise.system.stream.out|_ThreadID=70;_ThreadName=p:
>>>>>>     thread-pool-1; w: 7;|
>>>>>>     OBJECT ASSERTED value:QuestionValidation( mandatory=true,
>>>>>>     state=Closed,
>>>>>>     question=B2B_METER_SERIAL_NUMBER, type=string ) factId: 39|#]
>>>>>>
>>>>>>
>>>>>> Shouldn't the package name appear in the log as well?
>>>>>>
>>>>>>
>>>>>>     However, if I insert a QuestionValidation fact created in
>>>>>>     Java by using
>>>>>>     kbase.getFactType("SWWB2BOutgoing", "QuestionValidation")
>>>>>>     then the Test
>>>>>>     rule gets fired just fine.
>>>>>>
>>>>>>
>>>>>> That is, apparently "SWWB2BOutgoing".
>>>>>>
>>>>>> -W
>>>>>>
>>>>>>
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>>>>>
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