Interface QueryFunction<C,T>

All Superinterfaces:
Function<C,Set<T>>, NameHelper

public interface QueryFunction<C,T> extends Function<C,Set<T>>, NameHelper
sam function for store query apply(C) -> Set<T>
QueryFunction<T> query = ctx -> ctx.get(key) 

supports functional composition filter(Predicate), map(Function), flatMap(Function), ...