com.ibasco.agql.core.util

Class Functions

java.lang.Object

com.ibasco.agql.core.util.Functions

@ApiStatus.Internal
public class Functions
extends Object

Utilities for Functional Interfaces

Author:

Rafael Luis Ibasco

Field Summary

Fields

Modifier and Type	Field and Description
static Function<Object,Boolean>	FALSE Constant FALSE
static Function<Object,Boolean>	TRUE Constant TRUE

Constructor Summary

Constructors

Constructor and Description
Functions()

Method Summary

Modifier and Type	Method and Description
static <A,B> B	cast(A a) Cast argument to it's returning type
static <B,C extends B> C	convert(B b) Cast argument into the captured type
static boolean	isTypeOf(Object v, Class<?>... arr) isTypeOf.
static <A> A	returnArg(A a) returnArg.
static <A,B> A	selectFirst(A a, B b) Select first argument of the function and return it
static <A,B> B	selectSecond(A a, B b) Select second argument of the function and return it

Methods inherited from class java.lang.Object

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

Field Detail

TRUE

public static final Function<Object,Boolean> TRUE

Constant TRUE

FALSE

public static final Function<Object,Boolean> FALSE

Constant FALSE

Constructor Detail

Functions

public Functions()

Method Detail

cast

public static <A,B> B cast(A a)

Cast argument to it's returning type

Type Parameters:

A - The captured type of the parameter

B - The captured return type

Parameters:

a - a A object

Returns:

The casted instance

convert

public static <B,C extends B> C convert(B b)

Cast argument into the captured type

Type Parameters:

B - a B class

C - a C class

Parameters:

b - a B object

Returns:

a C object

returnArg

public static <A> A returnArg(A a)

returnArg.

Type Parameters:

A - a A class

Parameters:

a - a A object

Returns:

a A object

selectFirst

public static <A,B> A selectFirst(A a,
                                  B b)

Select first argument of the function and return it

Type Parameters:

A - a A class

B - a B class

Parameters:

a - a A object

b - a B object

Returns:

a A object

selectSecond

public static <A,B> B selectSecond(A a,
                                   B b)

Select second argument of the function and return it

Type Parameters:

A - a A class

B - a B class

Parameters:

a - a A object

b - a B object

Returns:

a B object

isTypeOf

public static boolean isTypeOf(Object v,
                               Class<?>... arr)

isTypeOf.

Parameters:

v - a Object object

arr - a Class object

Returns:

a boolean