alamb commented on issue #8051: URL: https://github.com/apache/datafusion/issues/8051#issuecomment-2491721633
Copying a comment from https://github.com/apache/datafusion/pull/13290 Yes, I was thinking something like ```rust trait ScalarUDFImpl { /// prepares to run the function, returning any state (such as /// a precompiled regex). Called once per instance of function in the query fn prepare(&self, args: &ScalarFunctionArgs) -> Option<Box<dyn Any>> { None } /// `prepared` field in ScalarFunctonArgs has the result of calling `prepare` fn invoke_with_args(&self, args: &ScalarFunctionArgs) -> ... ``` ```rust pub struct ScalarFunctionArgs<'a> { ... /// The result from a call to `prepare` for this function instance prepared: Option<Box<dyn Any>>, } ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org
