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https://issues.apache.org/jira/browse/GEODE-10136?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dale Emery resolved GEODE-10136.
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Fix Version/s: 1.15.0
Resolution: Fixed
> FunctionServiceBase tests fail because lambda classes have no canonical name
> on JDK 17
> --------------------------------------------------------------------------------------
>
> Key: GEODE-10136
> URL: https://issues.apache.org/jira/browse/GEODE-10136
> Project: Geode
> Issue Type: Improvement
> Components: functions, tests
> Affects Versions: 1.15.0
> Reporter: Dale Emery
> Assignee: Dale Emery
> Priority: Major
> Labels: Java17, pull-request-available
> Fix For: 1.15.0
>
>
> {{FunctionServiceBase}} tests fail on JDK 17.
> Here are the relevant factors:
> - {{FunctionServiceBase}} uses lambda expressions to create the function
> objects used to test the function service.
> - The objects that represent these lambda expressions use the default
> implementation of all {{Function}} methods other than
> {{execute(FunctionContext)}}.
> - The default implementation of {{getId()}} returns the canonical name of the
> function object's class.
> - In JDK 17, the class of a lambda expression has no canonical name.
> - The product classes {{AbstractExecution}} and
> {{DistributedRegionFunctionExecutor}} both throw exceptions if the given
> function reports its ID as {{null}}.
> The tests can be fixed by replacing the lambda expressions with uses of a
> class that returns a non-{{null}} ID.
> This may be a product issue. Given that {{Function}} is explicitly annotated
> as a {{@FunctionalInterface}}:
> - It is clearly intended to be used with lambda expressions, yet on JDK 17 it
> cannot be used with lamda expressions.
> - It would be reasonable to expect that an anonymous class that extends
> `Function` could safely use the default implementation of {{getId()}}, yet
> anonymous classes have no canonical names on any JDK.
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