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  1. Drools
  2. DROOLS-7198

MVEL runtime allowed casting primitives to String, executable model doesn't

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Details

    • Bug
    • Resolution: Not a Bug
    • Major
    • None
    • 7.73.0.Final
    • executable model
    • None
    • Hide

      In project https://github.com/flozano/drools-issues, class CastTest, test intToString

      Show
      In project https://github.com/flozano/drools-issues , class CastTest , test intToString
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    Description

      Before executable model, you could cast a primitive type (and its boxed counterparts if I'm not mistaken) to String.

      After enabling executable model, an error happens when trying to build a DRL that contains such construct.

      For example:

      // DRL directly from drools/issues/CastTest_intToString.drl
package drools.issues;
global drools.issues.model.RegardsManager regardsManager;
dialect "mvel"

rule "Send regards to all Tesla owners"
	when
		$v:drools.issues.model.vehicles.ElectricCar(maker=='Tesla')
	then
		insert(regardsManager.requestSendRegards("Hi, owner of a Tesla!").withParam("score", (String) $v.score ));
end

//

      withParam is defined as:

      	public SendRegards withParam(String name, String value) {
		params.put(name, Objects.requireNonNull(value));
		return this;
	}

      and score is an integer.

      With all above, MVEL runtime works well while executable model yields this:

      [main] ERROR drools.issues.executor.DroolsInternalFactory - KieBuilder has errors (releaseId=drools.issues.rules:CastTest_intToString.drl:1.0.0): Error Messages:
Message [id=1, level=ERROR, path=src/main/java/drools/issues/P56/LambdaConsequence56D5C9B4A166C62ADD965E3D4746CC56.java, line=20, column=968
   text=Cannot cast from int to String]
Message [id=2, level=ERROR, path=src/main/java/drools/issues/P56/LambdaConsequence56D5C9B4A166C62ADD965E3D4746CC56.java, line=0, column=0
   text=Java source of src/main/java/drools/issues/P56/LambdaConsequence56D5C9B4A166C62ADD965E3D4746CC56.java in error:
package drools.issues.P56;

import static drools.issues.RulesB8F478785D3CFF51934B126DCB0906E0.*;
import drools.issues.*;
import org.drools.modelcompiler.dsl.pattern.D;

@org.drools.compiler.kie.builder.MaterializedLambda()
public enum LambdaConsequence56D5C9B4A166C62ADD965E3D4746CC56 implements org.drools.model.functions.Block3<org.drools.model.Drools, drools.issues.model.vehicles.ElectricCar, drools.issues.model.RegardsManager>, org.drools.model.functions.HashedExpression {

    INSTANCE;

    public static final String EXPRESSION_HASH = "73EB858AA97EF361030B94C86DFB98FD";

    public java.lang.String getExpressionHash() {
        return EXPRESSION_HASH;
    }

    @Override()
    public void execute(org.drools.model.Drools drools, drools.issues.model.vehicles.ElectricCar $v, drools.issues.model.RegardsManager regardsManager) throws java.lang.Exception {
        drools.insert(regardsManager.requestSendRegards("Hi, owner of a Tesla!").withParam("score", ((java.lang.String) $v.getScore())));
    }
}
]
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          is related to

          Task - Represents a small unit of work that is not end-user facing. DROOLS-7201 Migration guide : non executable model to executable model

          • 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.
          • Resolved

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            People

              rhn-support-tkobayas Toshiya Kobayashi
              flozano@gmail.com Francisco Alejandro Lozano López
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                Created:
                Updated:
                Resolved: