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  1. Red Hat Decision Manager
  2. RHDM-1552

Property reactivity for properties not modified in modify block unexpectedly works in executable model.

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Details

    • Bug
    • Resolution: Done
    • Major
    • 7.10.1.GA
    • 7.5.0.GA, 7.5.1.GA, 7.6.0.GA, 7.7.0.GA, 7.7.1.GA, 7.8.0.GA, 7.8.1.GA, 7.9.0.GA
    • BRE

    • This issue occurs on all releases from RHDM 7.5.0 to 7.9.0.

    • False
    • False
    • Release Notes
    • CR1
    • +
    • Undefined
    • Hide
      1. Extract reproducer. 
        $ unzip reproducer_model_compiler_9a.zip
$ cd reproducer_model_compiler_9a
      2. Build and execute the rule. 
        $ ./run_mvn    # mvn clean compile exec:exec -DgenerateModel=YES
    :
    :
***** start
***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 10000, $point2 = 20000
***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 30000, $point2 = 20000
***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 50000, $point2 = 20000
***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 70000, $point2 = 20000
***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 90000, $point2 = 20000
***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 110000, $point2 = 20000
***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 130000, $point2 = 20000
***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 150000, $point2 = 20000
***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 170000, $point2 = 20000
***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 190000, $point2 = 20000
***** end
    :
    :

      Expected behavior: the rule is executed only once.

      Actual behavior: the rule is executed repeatedly.

      Show
      Extract reproducer. $ unzip reproducer_model_compiler_9a.zip $ cd reproducer_model_compiler_9a Build and execute the rule. $ ./run_mvn # mvn clean compile exec:exec -DgenerateModel=YES : : ***** start ***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 10000, $point2 = 20000 ***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 30000, $point2 = 20000 ***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 50000, $point2 = 20000 ***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 70000, $point2 = 20000 ***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 90000, $point2 = 20000 ***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 110000, $point2 = 20000 ***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 130000, $point2 = 20000 ***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 150000, $point2 = 20000 ***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 170000, $point2 = 20000 ***** Action of "rule9a" -- $fact = com.example.reproducer.Fact@62dae540, $point1 = 190000, $point2 = 20000 ***** end : : Expected behavior: the rule is executed only once. Actual behavior: the rule is executed repeatedly.
    • 2021 Week 07-09 (from Feb 15)

    Description

      Executing a rule like (*1) in executable rule model, the rule is evaluated repeatedly. In this rule, re-evaluation occurs in executable model though $fact.point1 is not modified in modify($fact) block. This issue also occurs for rules written in Java dialect as well as MVEL dialect.

      (*1)

      package com.example.reproducer

dialect "mvel"

rule "rule9a"
    when
        $fact : Fact( $point1 : point1, $point2 : point2 )
    then
        System.out.println("***** Action of \"rule9a\" -- $fact = " + $fact + ", $point1 = " + $point1 + ", $point2 = " + $point2);
        $point1 = $point1.add($point2);
        $fact.point1 = $point1;
        modify($fact){
            point3 = $point1
        }
end

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            mfusco@redhat.com Mario Fusco
            rhn-support-myoshida Masato Yoshida
            Daniel Rosa Daniel Rosa
            Daniel Rosa Daniel Rosa
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            Dates

              Created:
              Updated:
              Resolved: