[rules-users] inconsistent behavior with the eclipse IDE and the Drools compiler

[Wolfgang Laun]

Inside parentheses, the getTimelineDescriptor calls need an object.

Without parentheses, the implied object is this. But 5.2.0 did not
implement "free form expressions" fully.

-W

2011/11/29 Hezi Stern <hezis at delegatecom.com>:
>
>
> Hi all,
>
>
>
> I encountered the following strange inconsistent behavior with the eclipse
> IDE and the Drools compiler.
>
>
>
> I have the following test rule which should fire if a specific time
> condition is present. The time condition is evaluated by a function called
> getTimelineDescriptor() which is imported using import function.
>
>
>
> rule "ScheduleTime: request for explicit time arrived"
>
>
>
>       when
>
>                         ConditionMatrix(descriptors.times.timeline contains
> getTimelineDescriptor(EButtonID.TIME_SPECIFIC) ||
>
>                                         descriptors.times.timeline contains
> getTimelineDescriptor(EButtonID.DYNAMIC_ABSOLUTE_TIME) ||
>
>                                         descriptors.times.timeline contains
> getTimelineDescriptor(EButtonID.DYNAMIC_RELATIVE_TIME),
>
>                                         $srcAlt:
> srcWorkingAlternative,
>
>
>                                         )
>
>
>
>       then
>
>             //something...
>
>
>
> end
>
>
>
> the IDE indicates an error on the conditionMatrix line with the following
> description:
>
> Multiple markers at this line
>
> - [ERR 101] Line 123:77 no viable alternative at input '(' in rule
> "ScheduleTime: request for explicit time arrived" in pattern ConditionMatrix
>
> - [ERR 102] Line 123:103 mismatched input '||' expecting 'then' in rule
> "ScheduleTime: request for explicit time arrived"
>
> - [ERR 101] Line 123:101 no viable alternative at input ')' in rule
> "ScheduleTime: request for explicit time arrived" in pattern
> getTimelineDescriptor
>
>
>
> BUT it compiles ok and runs properly.
>
>
>
> When I wrap the function with brackets (as I thought it should be) like this
>
>
>
> rule "ScheduleTime: request for explicit time arrived"
>
>
>
>       when
>
>                         ConditionMatrix(descriptors.times.timeline contains
> (getTimelineDescriptor(EButtonID.TIME_SPECIFIC)) ||
>
>                                         descriptors.times.timeline contains
> (getTimelineDescriptor(EButtonID.DYNAMIC_ABSOLUTE_TIME)) ||
>
>                                         descriptors.times.timeline contains
> (getTimelineDescriptor(EButtonID.DYNAMIC_RELATIVE_TIME)),
>
>                                         $srcAlt:
> srcWorkingAlternative,
>
>
>                                         )
>
>
>
>       then
>
>             //something...
>
>
>
> end
>
>
>
> the IDE shows no error but the compilation fails with the following error:
>
> 16:19:14,734 [ERROR] [LoggerStream]: Unable to Analyse Expression
> descriptors.times.timeline contains
> (getTimelineDescriptor(EButtonID.TIME_SPECIFIC)) ||
> descriptors.times.timeline contains
> (getTimelineDescriptor(EButtonID.DYNAMIC_ABSOLUTE_TIME)) ||
> descriptors.times.timeline contains
> (getTimelineDescriptor(EButtonID.DYNAMIC_RELATIVE_TIME)):
>
> [Error: unable to resolve method using strict-mode:
> com.delegatecom.rules.ConditionMatrix.contains(com.delegatecom.nlp.api.TimelineDescriptor)]
>
> [Near : {... tors.times.timeline contains (getTimelineDescripto ....}]
>
>
>
> I am using Drools 5.2 with Helios (Eclipse).
>
> Any ideas why this is so? Although I have a working option it is impossible
> to maintain code when there are error indications.
>
>
>
> Thanks,
>
> Hezi
>
>
>
>
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