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  1. Drools
  2. DROOLS-6287

Arithmetic operations with BigDecimal for a variable in constraint cause a compilation error in executable model

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Major Major
    • None
    • 7.52.0.Final
    • executable model
    • 2021 Week 16-18 (from Apr 19)
    • Hide

      Download attached reproducer and run it by

      mvn clean compile exec:exec -DgenerateModel=YES

      On the other hand, the following commands succeed.

      mvn clean compile exec:exec -DgenerateModel=NO
      Show
      Download attached reproducer and run it by mvn clean compile exec:exec -DgenerateModel=YES On the other hand, the following commands succeed. mvn clean compile exec:exec -DgenerateModel=NO
    • Undefined
    • NEW
    • NEW

      When arithmetic operations is used with a field(s) of BigDecimal in LHS like the following, 

      rule "rule_addition_bd"
    when
        $fact : Fact( $bd: (bd1 + bd2) )
    then
        System.out.println("***** $fact: " + $fact + ", bd1 + bd2 = "+$bd);
end

rule "rule_addition_int" 
    when 
        $fact : Fact( $bd: (bd1 + 100) ) 
    then 
        System.out.println("***** $fact: " + $fact + ", bd1 + 100 = "+$bd);
 end

      build of executable model fails with the error like:

      [ERROR] /path/to/reproducer_bd_arthmetic/target/generated-sources/drools-model-compiler/main/java/com/example/reproducer/P37/LambdaExtractor376B932463BA628A4DCB2BE232AC4A7B.java:[22,31] bad operand types for binary operator '+'
[ERROR]   first type:  java.math.BigDecimal
[ERROR]   second type: java.math.BigDecimal

[ERROR] /path/to/reproducer_bd_arthmetic/target/generated-sources/drools-model-compiler/main/java/com/example/reproducer/P15/LambdaExtractor15F9A9FEFE61705DE8D800222D699200.java:[22,31] bad operand types for binary operator '+'
[ERROR]   first type:  java.math.BigDecimal
[ERROR]   second type: int

        1. reproducer_bd_arthmetic.zip
          7 kB

              lmolteni@redhat.com Luca Molteni
              rhn-support-hmiura Hiroko Miura
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                Created:
                Updated:
                Resolved: