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Posted to notifications@groovy.apache.org by "Paul King (Jira)" <ji...@apache.org> on 2020/11/28 03:10:00 UTC
[jira] [Resolved] (GROOVY-9814) Method reference doesn't accept
subtypes of argument
[ https://issues.apache.org/jira/browse/GROOVY-9814?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Paul King resolved GROOVY-9814.
-------------------------------
Fix Version/s: 4.0.0-alpha-2
3.0.7
Resolution: Fixed
Proposed PR merged, thanks!
> Method reference doesn't accept subtypes of argument
> ----------------------------------------------------
>
> Key: GROOVY-9814
> URL: https://issues.apache.org/jira/browse/GROOVY-9814
> Project: Groovy
> Issue Type: Bug
> Components: Compiler
> Affects Versions: 3.0.6
> Reporter: Christopher Smith
> Assignee: Eric Milles
> Priority: Major
> Fix For: 3.0.7, 4.0.0-alpha-2
>
> Attachments: Groovy9814.groovy
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> When using a method reference such as {{HasId::getId}}, the compiler implements the request by generating a {{MethodClosure}}. However, the closure accepts only the exact type of the reference, not subtypes. All compile-time checks pass, but the closure throws {{MissingMethodException}} at runtime with the message
> {code}
> No signature of method: org.codehaus.groovy.runtime.MethodClosure.getId() is applicable for argument types: (com.example.ClassWithId)
> {code}
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