org.apache.commons.functor.core.composite
Class Conditional

java.lang.Object
  org.apache.commons.functor.core.composite.Conditional

public final class Conditional
extends Object

Utility methods for creating conditional functors.

Version:

$Revision: 1166380 $ $Date: 2011-09-07 22:18:14 +0200 (Wed, 07 Sep 2011) $

Author:

Rodney Waldhoff

Constructor Summary

Conditional()
Conditional instances should NOT be constructed in standard programming.

Method Summary

static <L,R,T> BinaryFunction<L,R,T>	function(BinaryPredicate<? super L,? super R> q, BinaryFunction<? super L,? super R,? extends T> r, BinaryFunction<? super L,? super R,? extends T> s) Create a conditional BinaryFunction.
static <T> Function<T>	function(Predicate q, Function<? extends T> r, Function<? extends T> s) Create a conditional Function.
static <A,T> UnaryFunction<A,T>	function(UnaryPredicate<? super A> q, UnaryFunction<? super A,? extends T> r, UnaryFunction<? super A,? extends T> s) Create a conditional UnaryFunction.
static <L,R> BinaryPredicate<L,R>	predicate(BinaryPredicate<? super L,? super R> q, BinaryPredicate<? super L,? super R> r, BinaryPredicate<? super L,? super R> s) Create a conditional BinaryPredicate.
static Predicate	predicate(Predicate q, Predicate r, Predicate s) Create a conditional Predicate.
static <A> UnaryPredicate<A>	predicate(UnaryPredicate<? super A> q, UnaryPredicate<? super A> r, UnaryPredicate<? super A> s) Create a conditional UnaryPredicate.
static <L,R> BinaryProcedure<L,R>	procedure(BinaryPredicate<? super L,? super R> q, BinaryProcedure<? super L,? super R> r) Create a guarded BinaryProcedure.
static <L,R> BinaryProcedure<L,R>	procedure(BinaryPredicate<? super L,? super R> q, BinaryProcedure<? super L,? super R> r, BinaryProcedure<? super L,? super R> s) Create a conditional BinaryProcedure.
static Procedure	procedure(Predicate q, Procedure r) Create a guarded Procedure.
static Procedure	procedure(Predicate q, Procedure r, Procedure s) Create a conditional Procedure.
static <A> UnaryProcedure<A>	procedure(UnaryPredicate<? super A> q, UnaryProcedure<? super A> r) Create a guarded UnaryProcedure.
static <A> UnaryProcedure<A>	procedure(UnaryPredicate<? super A> q, UnaryProcedure<? super A> r, UnaryProcedure<? super A> s) Create a conditional UnaryProcedure.

Methods inherited from class java.lang.Object

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

Constructor Detail

Conditional

public Conditional()

Conditional instances should NOT be constructed in standard programming. Instead, the methods of the class should be invoked statically.

This constructor is public to permit tools that require a JavaBean instance to operate.

Method Detail

procedure

public static Procedure procedure(Predicate q,
                                  Procedure r)

Create a guarded Procedure.

Parameters:

q - if

r - then

Returns:

Procedure

procedure

public static Procedure procedure(Predicate q,
                                  Procedure r,
                                  Procedure s)

Create a conditional Procedure.

Parameters:

q - if

r - then

s - else

Returns:

Procedure

function

public static <T> Function<T> function(Predicate q,
                                       Function<? extends T> r,
                                       Function<? extends T> s)

Create a conditional Function.

Parameters:

q - if

r - then

s - else

Returns:

Function

predicate

public static Predicate predicate(Predicate q,
                                  Predicate r,
                                  Predicate s)

Create a conditional Predicate.

Parameters:

q - if

r - then

s - else

Returns:

Predicate

procedure

public static <A> UnaryProcedure<A> procedure(UnaryPredicate<? super A> q,
                                              UnaryProcedure<? super A> r)

Create a guarded UnaryProcedure.

Parameters:

q - if

r - then

Returns:

UnaryProcedure

procedure

public static <A> UnaryProcedure<A> procedure(UnaryPredicate<? super A> q,
                                              UnaryProcedure<? super A> r,
                                              UnaryProcedure<? super A> s)

Create a conditional UnaryProcedure.

Parameters:

q - if

r - then

s - else

Returns:

UnaryProcedure

function

public static <A,T> UnaryFunction<A,T> function(UnaryPredicate<? super A> q,
                                                UnaryFunction<? super A,? extends T> r,
                                                UnaryFunction<? super A,? extends T> s)

Create a conditional UnaryFunction.

Parameters:

q - if

r - then

s - else

Returns:

UnaryFunction

predicate

public static <A> UnaryPredicate<A> predicate(UnaryPredicate<? super A> q,
                                              UnaryPredicate<? super A> r,
                                              UnaryPredicate<? super A> s)

Create a conditional UnaryPredicate.

Parameters:

q - if

r - then

s - else

Returns:

UnaryPredicate

procedure

public static <L,R> BinaryProcedure<L,R> procedure(BinaryPredicate<? super L,? super R> q,
                                                   BinaryProcedure<? super L,? super R> r)

Create a guarded BinaryProcedure.

Parameters:

q - if

r - then

Returns:

BinaryProcedure

procedure

public static <L,R> BinaryProcedure<L,R> procedure(BinaryPredicate<? super L,? super R> q,
                                                   BinaryProcedure<? super L,? super R> r,
                                                   BinaryProcedure<? super L,? super R> s)

Create a conditional BinaryProcedure.

Parameters:

q - if

r - then

s - else

Returns:

BinaryProcedure

function

public static <L,R,T> BinaryFunction<L,R,T> function(BinaryPredicate<? super L,? super R> q,
                                                     BinaryFunction<? super L,? super R,? extends T> r,
                                                     BinaryFunction<? super L,? super R,? extends T> s)

Create a conditional BinaryFunction.

Parameters:

q - if

r - then

s - else

Returns:

BinaryFunction

predicate

public static <L,R> BinaryPredicate<L,R> predicate(BinaryPredicate<? super L,? super R> q,
                                                   BinaryPredicate<? super L,? super R> r,
                                                   BinaryPredicate<? super L,? super R> s)

Create a conditional BinaryPredicate.

Parameters:

q - if

r - then

s - else

Returns:

BinaryPredicate