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  1. Red Hat Decision Manager
  2. RHDM-1513

The enhanced "for" (foreach) statement causes compilation error in executable models.

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Details

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

    • RHDM 7.9.0.

    • False
    • False
    • Release Notes
    • CR1
    • +
    • Undefined
    • Hide 
      $ unzip reproducer_02801729_1a.zip
$ cd reproducer_02801729_1a
$ mvn clean compile exec:exec    # or mvn clean compile exec:exec -DgenerateModel=YES
    :
    :
[INFO] --- kie-maven-plugin:7.44.0.Final-redhat-00003:generateModel (default-generateModel) @ reproducer_02801729_1a ---
    :
    :
[ERROR] Unable to build KieBaseModel:rules
CompilationProblemErrorResult: org.drools.mvelcompiler.MvelCompilerException: Type check of for (Bus bus : $buses) {
    System.out.println("bus: " + bus);
} failed.

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  2.776 s
[INFO] Finished at: 2020-11-20T01:02:26+09:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.kie:kie-maven-plugin:7.44.0.Final-redhat-00003:generateModel (default-generateModel) on project reproducer_02801729_1a: Execution default-generateModel of goal org.kie:kie-maven-plugin:7.44.0.Final-redhat-00003:generateModel failed: Unable to get KieModule, Errors Existed: Error Messages:
[ERROR] Message [id=1, kieBase=rules, level=ERROR, path=com/example/reproducer/Sample.drl, line=0, column=0
[ERROR]    text=org.drools.mvelcompiler.MvelCompilerException: Type check of for (Bus bus : $buses) {
[ERROR]     System.out.println("bus: " + bus);
[ERROR] } failed.]
[ERROR] ---
[ERROR] Warning Messages:
[ERROR] ---
[ERROR] Info Messages:
[ERROR] 
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException
      Show
      $ unzip reproducer_02801729_1a.zip $ cd reproducer_02801729_1a $ mvn clean compile exec:exec # or mvn clean compile exec:exec -DgenerateModel=YES : : [INFO] --- kie-maven-plugin:7.44.0.Final-redhat-00003:generateModel (default-generateModel) @ reproducer_02801729_1a --- : : [ERROR] Unable to build KieBaseModel:rules CompilationProblemErrorResult: org.drools.mvelcompiler.MvelCompilerException: Type check of for (Bus bus : $buses) { System.out.println("bus: " + bus); } failed. [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 2.776 s [INFO] Finished at: 2020-11-20T01:02:26+09:00 [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.kie:kie-maven-plugin:7.44.0.Final-redhat-00003:generateModel (default-generateModel) on project reproducer_02801729_1a: Execution default-generateModel of goal org.kie:kie-maven-plugin:7.44.0.Final-redhat-00003:generateModel failed: Unable to get KieModule, Errors Existed: Error Messages: [ERROR] Message [id=1, kieBase=rules, level=ERROR, path=com/example/reproducer/Sample.drl, line=0, column=0 [ERROR] text=org.drools.mvelcompiler.MvelCompilerException: Type check of for (Bus bus : $buses) { [ERROR] System.out.println("bus: " + bus); [ERROR] } failed.] [ERROR] --- [ERROR] Warning Messages: [ERROR] --- [ERROR] Info Messages: [ERROR] [ERROR] -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException
    • 2020 Week 49-51 (from Nov 30)

    Description

      Compiling a rule like (*1) which is described in MVEL dialect and contains the enhanced "for" (foreach) statement in the action part with executable rule models enabled, compilation error like (*2) occurs at the enhanced "for" statement.

      (*1)

      package com.example.reproducer

import java.util.ArrayList
import com.example.reproducer.Bus

dialect "mvel"

rule "bus1"
    when
        $buses : ArrayList() from collect ( Bus() )
    then
        for (Bus : $buses ) {
            System.out.println("bus: " + bus);
        }
end

      (*2)

      [ERROR] Unable to build KieBaseModel:rules
CompilationProblemErrorResult: org.drools.mvelcompiler.MvelCompilerException: Type check of for (Bus bus : $buses) {
 System.out.println("bus: " + bus);
} failed.

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          Bug - A problem that impairs or prevents the functions of the product. DROOLS-5887 The enhanced "for" (foreach) statement causes compilation error in executable models.

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed

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            People

              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: