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  1. Drools
  2. DROOLS-7198

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

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    • Icon: Bug Bug
    • Resolution: Not a Bug
    • Icon: Major Major
    • None
    • 7.73.0.Final
    • executable model
    • None
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      In project https://github.com/flozano/drools-issues, class CastTest, test intToString

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

      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())));
    }
}
]
---
Warning Messages:
---
Info Messages:

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