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Lambda function returns null #1752

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yesamer opened this issue Jan 15, 2025 · 1 comment · May be fixed by apache/incubator-kie-drools#6261
Open

Lambda function returns null #1752

yesamer opened this issue Jan 15, 2025 · 1 comment · May be fixed by apache/incubator-kie-drools#6261
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area:dmn Related to DMN area:engine Related to the runtime engines type:bug Something is behaving unexpectedly

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@yesamer
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yesamer commented Jan 15, 2025 •
edited by gitgabrio
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TCK Test 0092-feel-lambda - 014

"compliance-level-3/0092-feel-lambda","0092-feel-lambda-test-01","014","ERROR","FAILURE: 'decision_014_1' expected='25.0' but found='null'"

Model: https://github.com/dmn-tck/tck/blob/a113546e37653dfc9e49284ead1ed49d43fe9d6e/TestCases/compliance-level-3/0092-feel-lambda/0092-feel-lambda.dmn#L487
Test: https://github.com/dmn-tck/tck/blob/a113546e37653dfc9e49284ead1ed49d43fe9d6e/TestCases/compliance-level-3/0092-feel-lambda/0092-feel-lambda-test-01.xml#L146

Double check why only one single test of this group fails

Consider this Decision node

<decision name="decision_014_1" id="_decision_014_1">
        <variable name="decision_014_1"/>
        <knowledgeRequirement>
            <requiredKnowledge href="#_bkm_014_1"/>
        </knowledgeRequirement>
        <!-- passed built-in functions as params  -->
        <literalExpression>
            <text>bkm_014_1(abs, sqrt)</text>
        </literalExpression>
    </decision>

It results in the following error:

14:13:47.511 [main] WARN org.kie.dmn.core.util.MsgUtil.logMessage:84 - Parameter 'fn1' is of type 'DMNType{ http://www.montera.com.au/spec/DMN/0092-feel-lambda : lambda_number_returns_number }' but the actual value 'org.kie.dmn.feel.runtime.functions.AbsFunction@7153995c' is not an instance of that type; setting as null
14:13:47.512 [main] WARN org.kie.dmn.core.util.MsgUtil.logMessage:84 - Parameter 'fn2' is of type 'DMNType{ http://www.montera.com.au/spec/DMN/0092-feel-lambda : lambda_number_returns_number }' but the actual value 'org.kie.dmn.feel.runtime.functions.SqrtFunction@3b256d50' is not an instance of that type; setting as null
14:13:47.512 [main] ERROR org.kie.dmn.core.util.MsgUtil.logMessage:83 - FEEL ERROR while evaluating literal expression 'fn1(-5)*fn2(25)': Not an invocable: 'null'
14:13:47.512 [main] ERROR org.kie.dmn.core.util.MsgUtil.logMessage:83 - FEEL ERROR while evaluating literal expression 'fn1(-5)*fn2(25)': Not an invocable: 'null'
@yesamer yesamer mentioned this issue Jan 15, 2025
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@yesamer yesamer added type:bug Something is behaving unexpectedly area:dmn Related to DMN area:engine Related to the runtime engines labels Jan 15, 2025
@jomarko jomarko mentioned this issue Jan 17, 2025
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@jomarko
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jomarko commented Jan 17, 2025

Hi team, thank you for this issue, just FYI, I opened ticket for the editor, as there we miss the support for similar models #1756

@yesamer yesamer changed the title Passing built-in functions as function parameters doesn't work Passing built-in functions as function's parameters doesn't work Jan 20, 2025
@gitgabrio gitgabrio changed the title Passing built-in functions as function's parameters doesn't work Lambda function returns null Feb 6, 2025
@bncriju bncriju linked a pull request Feb 20, 2025 that will close this issue
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[incubator-kie-issues-1752] TCK failure-Lambda function returns null bncriju/incubator-kie-drools
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@jomarko @yesamer