com.ibm.streamsx.topology.logic

Class Logic

java.lang.Object

com.ibm.streamsx.topology.logic.Logic

public class Logic
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
Logic()

Method Summary

Modifier and Type	Method and Description
static <T,U,R> BiFunction<T,java.util.List<U>,R>	first(BiFunction<T,U,R> logic) Wrap a BiFunction instance that operators on a single value for the second parameter (type U) as a BiFunction that takes an List.
static <T> UnaryOperator<T>	identity()
static <T> Function<T,java.lang.Object>	notKeyed()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Logic

public Logic()

Method Detail

identity

public static <T> UnaryOperator<T> identity()

notKeyed

public static <T> Function<T,java.lang.Object> notKeyed()

first

public static <T,U,R> BiFunction<T,java.util.List<U>,R> first(BiFunction<T,U,R> logic)

Wrap a BiFunction instance that operators on a single value for the second parameter (type U) as a BiFunction that takes an List. Only the first value from the list will be passed to to logic. If the list is empty, then null is passed.

Parameters:

logic - Logic to be called.

Returns:

Wrapper Function2 that accepts an List of type U and passes the first value or null to logic.