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https://issues.apache.org/jira/browse/GROOVY-12758?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Paul King resolved GROOVY-12758.
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Resolution: Fixed
> STC: Callable, Runnable, Serializable overload preference for functional
> argument (closure, lambda, etc.): run-time method-reference selection for
> dynamic code
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: GROOVY-12758
> URL: https://issues.apache.org/jira/browse/GROOVY-12758
> Project: Groovy
> Issue Type: Bug
> Components: Static compilation
> Reporter: Christopher Smith
> Assignee: Paul King
> Priority: Major
> Fix For: 7.0.0-alpha-1, 6.0.1
>
>
> This is for changes made in 6 in 6f8b258906. Original issue follows.
> This appears to be similar to GROOVY-9881, but it's specifically in the
> method-overload procedure. Given a functional value type with two method
> overloads:
> {code}
> interface Try<T> {
> Try<T> andThenTry(Consumer<? super T>)
> Try<T> andThenTry(Runnable)
> }
> {code}
> When this code is invoked from static code, the STC errors out on an
> ambiguous method reference even if the method type isn't:
> {code}
> // AWS SDK 2 DynamoDbTable
> class DynamoDbTable {
> void putItem(PutItemRequest<T>)
> void putItem(Consumer<PutItemRequest.Builder<T>)
> void putItem(T)
> }
> @CompileStatic
> class MyServiceClass {
> void doThing() {
> Try.success(putItemRequest())
> .andThenTry(table::putItem) // T for Try<T> is PutItemRequest<I>
> }
> }
> {code}
> produces
> {code}
> [Static type checking] - Reference to method is ambiguous. Cannot choose
> between [Try<T> Try#andThenTry(Consumer<? super T>), Try<T>
> Try#andThenTry(Runnable)]
> {code}
> I think this may have something to do with the relaxed SAM matching that is
> used to bridge ambiguous closure syntax, but when a plain method reference is
> used, there's no ambiguity available.
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