[jboss-jira] [JBoss JIRA] (DROOLS-2486) Drools Runtime does not recognize Custom Operator Parameter
bharath mogali created DROOLS-2486:
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Summary: Drools Runtime does not recognize Custom Operator Parameter
Key: DROOLS-2486
URL: https://issues.jboss.org/browse/DROOLS-2486
Project: Drools
Issue Type: Feature Request
Components: core engine
Affects Versions: 7.7.0.Final
Reporter: bharath mogali
Assignee: Mario Fusco
Problem Statement:
We have few custom operators for Date and Strings, which are implemented looking at Str
operator like shown here:
https://github.com/kiegroup/drools/blob/f7ab4ee3c88d767a8cbb372c2db1afa84...
with below configuration in kie.properties.conf:
drools.evaluator.str = com.company.drools.operators.StrEvaluatorDefinition
For Custom Str operator we created, Drools runtime is not able to make distinction between
Str[begins] and Str[ends].
What this means is when we are running below tests, we expect Rule-1 to fail and Rule-2 to
get activated. But what we noticed is, Rule-2 will not be activated.
// Facts input into drools :
// str1 = drools
// str2 = dr
rule "Rule-1"
when message : Customer( str1 str[endsWith] str2 )
then System.out.println("Rule - Str 1 - fired");
end
rule "Rule-2"
when message : Customer( str1 str[startsWith] str2 )
then System.out.println("Rule - Str 2 - fired");
end
Other Observations:
If we change RHS to a a string literal like shown below, then Rule-2 will be Activated.
// Facts input into drools :
// str1 = drools
// str2 = dr
rule "Rule-1"
when message : Customer( str1 str[endsWith] "abc" )
then System.out.println("Rule - Str 1 - fired");
end
rule "Rule-2"
when message : Customer( str1 str[startsWith] str2 )
then System.out.println("Rule - Str 2 - fired");
end
Finally
We removed Str custom operator, and then used the out of the box Str operator provided by
drools. We ran below mentioned tests again, this time Rule-2 gets activated.
// Facts input into drools :
// str1 = drools
// str2 = dr
rule "Rule-1"
when message : Customer( str1 str[endsWith] str2 )
then System.out.println("Rule - Str 1 - fired");
end
rule "Rule-2"
when message : Customer( str1 str[startsWith] str2 )
then System.out.println("Rule - Str 2 - fired");
end
Based on our tests, it seems like custom operators are not processed correctly.
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