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  1. Drools
  2. DROOLS-5899

Expression like BigDecimal_type_property = BigDecimal_type_property.divide(BigDecimal_value) causes a build failure in executable model.

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    • Icon: Bug Bug
    • Resolution: Done
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    • executable model
    • 2020 Week 49-51 (from Nov 30)
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      $ unzip reproducer_02801729_3d.zip 
$ cd reproducer_02801729_3d
$ mvn clean compile exec:exec -DgenerateModel=YES
    :
    :
[INFO] --- kie-maven-plugin:7.44.0.Final-redhat-00003:generateModel (default-generateModel) @ reproducer_02801729_3d ---
    :
    :
[ERROR] Unable to build KieBaseModel:rules
CompilationProblemErrorResult: org.drools.mvelcompiler.MvelCompilerException: RHS doesn't have a type

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  2.969 s
[INFO] Finished at: 2020-12-04T12:24:52+09:00
[INFO] ------------------------------------------------------------------------
    :
    :
      Show
      $ unzip reproducer_02801729_3d.zip $ cd reproducer_02801729_3d $ mvn clean compile exec:exec -DgenerateModel=YES : : [INFO] --- kie-maven-plugin:7.44.0.Final-redhat-00003:generateModel (default-generateModel) @ reproducer_02801729_3d --- : : [ERROR] Unable to build KieBaseModel:rules CompilationProblemErrorResult: org.drools.mvelcompiler.MvelCompilerException: RHS doesn't have a type [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 2.969 s [INFO] Finished at: 2020-12-04T12:24:52+09:00 [INFO] ------------------------------------------------------------------------ : :
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    • NEW
    • NEW
    • ---
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      Compiling a rule like (*1) which is described in MVEL dialect and uses an expression like BigDecimal_type_property = BigDecimal_type_property.divide(BigDecimal_value), for example (*1-1), with executable rule models enabled, an error like (*2) occurs.

      This issue occurs in the case of using the other basic operation add, subtract and multiply as well as divide.

      (*1)

      package com.example.reproducer

import com.example.reproducer.Bus
import java.math.BigDecimal

dialect "mvel"

rule "bus3d"
    when
        $bus : Bus()
    then
        $bus.weight = $bus.weight.divide(BigDecimal.valueOf(1000));    ..... (*1-1)
        System.out.println("***** " + $bus + ", weight = " + $bus.weight);
end

      $bus.weight is a BigDecimal type property.

      (*2)

      [ERROR] Unable to build KieBaseModel:rules
CompilationProblemErrorResult: org.drools.mvelcompiler.MvelCompilerException: RHS doesn't have a type

              lmolteni@redhat.com Luca Molteni
              lmolteni@redhat.com Luca Molteni
              Daniel Rosa Daniel Rosa
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                Created:
                Updated:
                Resolved: