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:

$Revision$ $Date$

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
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 Object

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

Constructor Details

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 Details

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.

Type Parameters:

T - the input functions parameter type

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.

Type Parameters:

A - the predicates argument type.

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.

Type Parameters:

A - the predicates argument type.

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.

Type Parameters:

A - the predicates argument type.

T - the output function returned value type.

Parameters:

q - if

r - then

s - else

Returns:

UnaryFunctioninvalid input: '<'A, T>

predicate

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

Create a conditional UnaryPredicate.

Type Parameters:

A - the predicates argument type.

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.

Type Parameters:

L - the left argument type.

R - the right argument type.

Parameters:

q - if

r - then

Returns:

BinaryProcedureinvalid input: '<'L, R>

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.

Type Parameters:

L - the left argument type.

R - the right argument type.

Parameters:

q - if

r - then

s - else

Returns:

BinaryProcedureinvalid input: '<'L, R>

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.

Type Parameters:

L - the left argument type.

R - the right argument type.

T - the output function returned value type.

Parameters:

q - if

r - then

s - else

Returns:

BinaryFunctioninvalid input: '<'L, R, T>

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.

Type Parameters:

L - the left argument type.

R - the right argument type.

Parameters:

q - if

r - then

s - else

Returns:

BinaryPredicateinvalid input: '<'L, R>