Trait rlink::core::function::KeySelectorFunction [−][src]
pub trait KeySelectorFunction where
Self: NamedFunction + CheckpointFunction, { fn open(&mut self, context: &Context) -> Result<()>; fn get_key(&self, record: &mut Record) -> Record; fn close(&mut self) -> Result<()>; fn key_schema(&self, input_schema: FnSchema) -> FnSchema; }