[jira] [Resolved] (GROOVY-10929) Method closure somehow doesn't match argument

["Eric Milles (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GROOVY-10929?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Milles resolved GROOVY-10929.
----------------------------------
    Resolution: Fixed

https://github.com/apache/groovy/commit/1e2111d154a53ab25ced36d85c6634c3a3c4ddbe

> Method closure somehow doesn't match argument
> ---------------------------------------------
>
>                 Key: GROOVY-10929
>                 URL: https://issues.apache.org/jira/browse/GROOVY-10929
>             Project: Groovy
>          Issue Type: Bug
>          Components: Compiler
>    Affects Versions: 4.0.8
>            Reporter: Christopher Smith
>            Assignee: Eric Milles
>            Priority: Critical
>
> I do not understand at all how this is happening, but when I pass class literals to a method closure whose parameter is a {{Class}}, I'm getting {{MissingMethodException}}. This seems to have something to do with ASTTs, because it only happens when {{TupleConstructor}} is involved. In my business code, {{TupleConstructor}} on a top-level containing class triggers the error on a static nested class; I have a repro, but I'm only able to make it trigger on the specific class involved.
> In any case, in my business code I'm using {{@CompileStatic}}, but that doesn't seem to be protecting me against runtime dynamic dispatch.
> {code:groovy}
> @Grab(group='software.amazon.awssdk', module='dynamodb-enhanced', version='2.19.25')
> import software.amazon.awssdk.enhanced.dynamodb.mapper.annotations.*
> import software.amazon.awssdk.enhanced.dynamodb.TableSchema
> import java.util.function.Function
> import groovy.transform.*
> @DynamoDbBean @TupleConstructor(defaults=false)
> class TopLevel {
>     String id
>     @DynamoDbPartitionKey
>     String getId() { id }
>     @DynamoDbBean
>     @ToString
>     static class Nested {
>         String id
>         @DynamoDbPartitionKey
>         String getId() { id }
>     }
> }
> // https://javadoc.io/static/software.amazon.awssdk/dynamodb-enhanced/2.19.25/software/amazon/awssdk/enhanced/dynamodb/TableSchema.html#fromClass-java.lang.Class-
> Function<Class<?>, TableSchema<?>> func = TableSchema.&fromClass
> func.apply(TopLevel) // XXX
> func.apply(TopLevel.Nested)
> {code}
> {code}
> Condition failed with Exception:
> func.apply(TopLevel)
> |    |     |
> |    |     class com.example.TopLevel
> |    groovy.lang.MissingMethodException: No signature of method: org.codehaus.groovy.runtime.MethodClosure.fromClass() is applicable for argument types: (Class) values: [class com.example.TopLevel]
> |    Possible solutions: getClass(), metaClass(groovy.lang.Closure)
> |    	at com.example.BugRepl.top-level(BugRepl.groovy:19)
> org.codehaus.groovy.runtime.MethodClosure@6a472566
> {code}
> I'm tagging this as critical because it's a "can't-possibly-happen" bug (at least in static mode) that has apparently been latent in an internal library for months and is still present as of 4.0.8.



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