Drools facts using POJO accessor methods error
by aliosha79
Hi,
i have some troubles to undestand how drools processes FACTS. I have a POJO
class resulted from an UnMarshal jaxb processing like this:
public MyClass {
protected String className = "Class1";
public getClassName(){
return className;
}
public setClassName(String className){
this.className = className
}
}
Now i have to compose a drl file with a rule like this:
when
$Class : MyClass()
eval ($Class.getClassName() == "Class1")
then
System.out.println("ok!!!");
end
This syntax doesn't rise errors BUT doesn't match the real name... no ok
message are printed.
when
$Class : MyClass (getClassName() == "Class1")
then
System.out.println("ok!!!");
end
This syntax raises me a null pointer exception!!!
What's the right syntax?
Can i use the accessor methods building drools facts?
Thanks a lot!
--
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12 years, 2 months
jboss tohu
by Olfa h
hi,
can someone help me to deploy jboss tohi 1.2.0 into jboss 4.3.2 and eclipse
indigo ?????????????????
thx
12 years, 2 months
A problem in sliding windows.
by Hassan
when I was testing the sliding windows, I was blocked becouse this concept
doesn't work for me, It's becouse of my misunderstanding of the concept, I
looking for the error which I do:
for exemple:
==> the rule:
*/
rule "sliding windows"
when
$a : Event1() over window:time(2s)
then
System.out.println("ok");
end /*
==> Events
Event1 ev1=new Event1((long)1000,(long)2000); // the event will occur in 1s
and finish in 3s
Event1 ev2=new Event1((long)3000,(long)4000); // the event will occur in 3s
and finish in 4s
session.insert(ev1);
session.insert(ev2);
clock.advanceTime(4, TimeUnit.SECONDS); // we are now in 4s so only event
that happen in [2s,4s] have
session.fireAllRules(); // to fire -ev2-.
// But the probleme that, it gives me 2 ok so the 2 object are fired !! I
don't inderstand why ??
--
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12 years, 2 months
CLOUD mode Vs Stream Mode.
by Hassan
Hello,
It's clair that to work with thae events we have to put our base
configuration into STREAM mode like this:
*/KnowledgeBaseConfiguration config =
KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
config.setOption( EventProcessingOption.STREAM );/*
But in my code bellow I didn't use this mode and I didn't use Entry-points,
Although my events work very well !!
Help please !!
--
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12 years, 2 months
POJO accessors method in Drools facts
by aliosha79
Hi,
i have some troubles to undestand how drools processes FACTS. I have a POJO
class resulted from an UnMarshal jaxb processing like this:
public MyClass {
protected String className = "Class1";
public getClassName(){
return className;
}
public setClassName(String className){
this.className = className
}
}
Now i have to compose a drl file with a rule like this:
when
$Class : MyClass()
eval ($Class.getClassName() == "Class1")
then
System.out.println("ok!!!");
end
This syntax doesn't rise errors BUT doesn't match the real name... no ok
message are printed.
when
$Class : MyClass (getClassName() == "Class1")
then
System.out.println("ok!!!");
end
This syntax raises me a null pointer exception!!!
What's the right syntax?
Can i use the accessor methods building drools facts?
Thanks a lot!
--
View this message in context: http://drools.46999.n3.nabble.com/POJO-accessors-method-in-Drools-facts-t...
Sent from the Drools: User forum mailing list archive at Nabble.com.
12 years, 2 months
CLOUD mode Vs Stream Mode.
by Hassan
Hello,
It's clair that to work with thae events we have to put our base
configuration into STREAM mode like this:
*/KnowledgeBaseConfiguration config =
KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
config.setOption( EventProcessingOption.STREAM );/*
But in an exemple, I didn't use this mode and I didn't use Entry-points,
Although my events work very well !!
Help please !!
--
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12 years, 2 months
Drools (Planner) getting confused between list and map access
by aitchnyu
I am trying to find the total of an attribute of`SubjectTeacherPeriod`. The
`numAttributeMap`property (a map with `String` keys and `int` values) stores
the value. But trying to access it is problematic as Drools thinks that
`$num_value[$attribute]` is a list operation, not a map operation.
I listed my rule and runtime errors:
rule "insertAttributeDayTotal"
//salience 1 // Do these rules first (optional, for performance)
when
$sum_regression_constraint : SumRegressionConstraint(
$class : class_,
$attribute : attribute//,
//$weight : weight;
)
$day_of_week : DayOfWeek()
$attribute_day_total : Number() from accumulate(
SubjectTeacherPeriod(
//period != null,
period.class_ == $class,
period.dayOfWeek == $day_of_week,
$num_value : numAttributeMap
//$total : num_attribute_map.get($attribute)
),
sum($num_value[$attribute]) //PROBLEM LINE??
)
then
//System.out.println("BUCKET TOTAL "+$id+" "+$bucket_total.intValue());
insertLogical(new AttributeDaySum($class, $attribute, $day_of_week,
$attribute_day_total.intValue()));
end
*Errors:*
jesvin@Jesvin-Technovia:~/dev/drools/timetabler$ java -server
in.co.technovia.timetabler.TimeTableApp
Exception in thread "main" java.lang.IllegalStateException: There are errors
in the scoreDrl's:
Rule Compilation error : [Rule name='insertAttributeDayTotal']
in/co/technovia/timetabler/domain/Rule_insertAttributeDayTotal_fd3f7d4f98084049887c1596f5a56805.java
(9:1093) : The type of the expression must be an array type but it resolved
to Map
in/co/technovia/timetabler/domain/Rule_insertAttributeDayTotal_fd3f7d4f98084049887c1596f5a56805.java
(9:1104) : Type mismatch: cannot convert from String to int
at
org.drools.planner.config.solver.SolverConfig.buildRuleBase(SolverConfig.java:238)
at
org.drools.planner.config.solver.SolverConfig.buildSolver(SolverConfig.java:170)
at
org.drools.planner.config.XmlSolverConfigurer.buildSolver(XmlSolverConfigurer.java:103)
at
in.co.technovia.timetabler.TimeTableApp.createSolver(TimeTableApp.java:55)
at in.co.technovia.timetabler.TimeTableApp.main(TimeTableApp.java:39)
--
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12 years, 2 months
