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  1. Red Hat Decision Manager
  2. RHDM-1527

Compound assignment operation like BigDecimal_type_property += Numeric_value causes compilation errors in executable model.

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Major Major
    • 7.10.0.GA
    • 7.9.0.GA
    • BRE

    • The issue was found in RHDM 7.9.0.

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    • False
    • Release Notes
    • CR1
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      $ unzip reproducer_02801729_6a_6b.zip 
$ cd reproducer_02801729_6a_6b
$ mvn clean compile exec:exec -DgenerateModel=YES
    :
    :
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile-1) @ reproducer_02801729_6a_6b ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 6 source files to /work2/cases/02801729/reproducer_02801729_6a_6b/target/classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /work2/cases/02801729/reproducer_02801729_6a_6b/target/generated-sources/drools-model-compiler/main/java/com/example/reproducer/P86/LambdaConsequence86B94E0EB0387F8D724213EF209CA726.java:[19,13] weight has private access in com.example.reproducer.Bus
[ERROR] /work2/cases/02801729/reproducer_02801729_6a_6b/target/generated-sources/drools-model-compiler/main/java/com/example/reproducer/P86/LambdaConsequence86B94E0EB0387F8D724213EF209CA726.java:[19,21] bad operand types for binary operator '+'
  first type:  java.math.BigDecimal
  second type: int
[INFO] 2 errors 
[INFO] -------------------------------------------------------------
    :
    :
      Show
      $ unzip reproducer_02801729_6a_6b.zip $ cd reproducer_02801729_6a_6b $ mvn clean compile exec:exec -DgenerateModel=YES : : [INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile-1) @ reproducer_02801729_6a_6b --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 6 source files to /work2/cases/02801729/reproducer_02801729_6a_6b/target/classes [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] ------------------------------------------------------------- [ERROR] /work2/cases/02801729/reproducer_02801729_6a_6b/target/generated-sources/drools-model-compiler/main/java/com/example/reproducer/P86/LambdaConsequence86B94E0EB0387F8D724213EF209CA726.java:[19,13] weight has private access in com.example.reproducer.Bus [ERROR] /work2/cases/02801729/reproducer_02801729_6a_6b/target/generated-sources/drools-model-compiler/main/java/com/example/reproducer/P86/LambdaConsequence86B94E0EB0387F8D724213EF209CA726.java:[19,21] bad operand types for binary operator '+' first type: java.math.BigDecimal second type: int [INFO] 2 errors [INFO] ------------------------------------------------------------- : :
    • 2020 Week 49-51 (from Nov 30)

      Compiling a rule like (*1) which is described in MVEL dialect and uses a compound assignment operation like BigDecimal_type_property += Numeric_value, for example,

      • $bus.weight += 1000; ..... (6a) or
      • num = 100; $bus.weight += num; ..... (6b)

      with executable rule models enabled, errors like (*2) occur. $bus.weight is a BigDecimal type property.
      This issue occurs in the case of using the other basic operations '-=', '*=', '/=' as well as '+='.

      (*1)

      package com.example.reproducer

import com.example.reproducer.Bus

dialect "mvel"

rule "bus6a"
    when
        $bus : Bus()
    then
        $bus.weight += 1000;    ..... (6a)
        System.out.println("***** " + $bus + ", weight = " + $bus.weight);
        update($bus);
end

      (*2)

      [ERROR] /work2/cases/02801729/reproducer_02801729_6a_6b/target/generated-sources/drools-model-compiler/main/java/com/example/reproducer/P86/LambdaConsequence86B94E0EB0387F8D724213EF209CA726.java:[19,13] weight has private access in com.example.reproducer.Bus
[ERROR] /work2/cases/02801729/reproducer_02801729_6a_6b/target/generated-sources/drools-model-compiler/main/java/com/example/reproducer/P86/LambdaConsequence86B94E0EB0387F8D724213EF209CA726.java:[19,21] bad operand types for binary operator '+'
  first type:  java.math.BigDecimal
  second type: int

        1. reproducer_02801729_6a_6b.zip
          8 kB

              lmolteni@redhat.com Luca Molteni
              rhn-support-myoshida Masato Yoshida
              Daniel Rosa Daniel Rosa
              Daniel Rosa Daniel Rosa
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                Created:
                Updated:
                Resolved: