io.ray.streaming.api.function.impl

Interface FilterFunction<T>

Type Parameters:

T - type of the input data.

All Superinterfaces:

Function, Serializable

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface FilterFunction<T>
extends Function

A filter function is a predicate applied individually to each record. The predicate decides whether to keep the element, or to discard it.

Method Summary

Modifier and Type	Method and Description
boolean	filter(T value) The filter function that evaluates the predicate.

Methods inherited from interface io.ray.streaming.api.function.Function

loadCheckpoint, saveCheckpoint

Method Detail

filter

boolean filter(T value)
        throws Exception

The filter function that evaluates the predicate.

Parameters:

value - The value to be filtered.

Returns:

True for values that should be retained, false for values to be filtered out.

Throws:

Exception