org.dbrain.data.util

Class Functions

java.lang.Object

org.dbrain.data.util.Functions

public class Functions
extends Object

Classes that contains static methods to manipulate adapters.

Constructor Summary

Constructors

Constructor and Description
Functions()

Method Summary

Modifier and Type	Method and Description
static <FROM,TO,MIDDLE> Function<FROM,TO>	compose(Function<FROM,? extends MIDDLE> function1, Function<MIDDLE,TO> function2) Plugs two adapters together to make a single combined adapter.
static <FROM,TO,MIDDLE1,MIDDLE2,MIDDLE3> Function<FROM,TO>	compose(Function<FROM,? extends MIDDLE1> function1, Function<MIDDLE1,? extends MIDDLE2> function2, Function<MIDDLE2,? extends MIDDLE3> function3, Function<MIDDLE3,TO> function4) Combine four adapters together to make a single adapter.
static <FROM,TO,MIDDLE1,MIDDLE2> Function<FROM,TO>	compose(Function<FROM,? extends MIDDLE1> function1, Function<MIDDLE1,? extends MIDDLE2> function2, Function<MIDDLE2,TO> function3) Combine three adapters together to make a single adapter.
static <T> Function<T,T>	composeAlike(Function<T,T> function1, Function<T,T> function2) Combine 2 adapters that process the same type.
static <T> Function<T,T>	composeAlike(Function<T,T> function1, Function<T,T> function2, Function<T,T> function3)
static <T> Function<T,T>	composeAlike(Function<T,T> function1, Function<T,T> function2, Function<T,T> function3, Function<T,T> function4)

Methods inherited from class java.lang.Object

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

Constructor Detail

Functions

public Functions()

Method Detail

composeAlike

public static <T> Function<T,T> composeAlike(Function<T,T> function1,
                                             Function<T,T> function2)

Combine 2 adapters that process the same type. This method allows null since each adapter is interchangeable.

Type Parameters:

T - The type these adapter processes.

Parameters:

function1 - The adapter 1 to plug, or null.

function2 - The adapter 2 to plug, or null.

Returns:

composeAlike

public static <T> Function<T,T> composeAlike(Function<T,T> function1,
                                             Function<T,T> function2,
                                             Function<T,T> function3)

composeAlike

public static <T> Function<T,T> composeAlike(Function<T,T> function1,
                                             Function<T,T> function2,
                                             Function<T,T> function3,
                                             Function<T,T> function4)

compose

public static <FROM,TO,MIDDLE> Function<FROM,TO> compose(Function<FROM,? extends MIDDLE> function1,
                                                         Function<MIDDLE,TO> function2)

Plugs two adapters together to make a single combined adapter.

Type Parameters:

FROM -

TO - combineAlike

MIDDLE -

Parameters:

function1 - The adapter 1 to plug.

function2 - The adapter 2 to plug.

Returns:

A combined adapter doing: FROM - Adapter1 - Adapter2 - TO

compose

public static <FROM,TO,MIDDLE1,MIDDLE2> Function<FROM,TO> compose(Function<FROM,? extends MIDDLE1> function1,
                                                                  Function<MIDDLE1,? extends MIDDLE2> function2,
                                                                  Function<MIDDLE2,TO> function3)

Combine three adapters together to make a single adapter.

Type Parameters:

FROM -

TO -

MIDDLE1 -

MIDDLE2 -

Parameters:

function1 - The adapter 1 to plug.

function2 - The adapter 2 to plug.

function3 - The adapter 23to plug.

Returns:

A combined adapter doing: FROM - Adapter1 - Adapter2 - Adapter3 - TO

compose

public static <FROM,TO,MIDDLE1,MIDDLE2,MIDDLE3> Function<FROM,TO> compose(Function<FROM,? extends MIDDLE1> function1,
                                                                          Function<MIDDLE1,? extends MIDDLE2> function2,
                                                                          Function<MIDDLE2,? extends MIDDLE3> function3,
                                                                          Function<MIDDLE3,TO> function4)

Combine four adapters together to make a single adapter.

Type Parameters:

FROM -

TO -

MIDDLE1 -

MIDDLE2 -

Parameters:

function1 - The adapter 1 to plug.

function2 - The adapter 2 to plug.

function3 - The adapter 3 to plug.

function4 - The adapter 3 to plug.

Returns:

A combined adapter doing: FROM - Adapter1 - Adapter2 - Adapter3 - Adapter4 - TO