Package org.apache.commons.functor.core

Class Offset

java.lang.Object

org.apache.commons.functor.core.Offset

All Implemented Interfaces:

BinaryFunctor<java.lang.Object,java.lang.Object>, BinaryPredicate<java.lang.Object,java.lang.Object>, Functor, NullaryFunctor, Predicate, UnaryFunctor<java.lang.Object>, UnaryPredicate<java.lang.Object>

public final class Offset
extends java.lang.Object
implements Predicate, UnaryPredicate<java.lang.Object>, BinaryPredicate<java.lang.Object,java.lang.Object>

A predicate that returns false the first n times it is invoked, and true thereafter.

Since:

1.0

Version:

$Revision$ $Date$

Field Summary

Fields

Modifier and Type	Field	Description
private int	current	The current number of times the predicate has been invoked.
private int	min	The number of times the predicate must return false.

Constructor Summary

Constructors

Constructor	Description
Offset(int count)	Create a new Offset.

Method Summary

Modifier and Type	Method	Description
boolean	test()	Evaluate this predicate.
boolean	test(java.lang.Object obj)	Evaluate this predicate.
boolean	test(java.lang.Object a, java.lang.Object b)	Evaluate this predicate.
java.lang.String	toString()	Returns a human readable description of this functor.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.commons.functor.Functor

equals, hashCode

Field Detail

min

private final int min

The number of times the predicate must return false.

current

private int current

The current number of times the predicate has been invoked.

Constructor Detail

Offset

public Offset(int count)

Create a new Offset.

Parameters:

count - offset

Method Detail

test

public boolean test()

Evaluate this predicate.

Specified by:

test in interface Predicate

Returns:

the result of this test

test

public boolean test(java.lang.Object obj)

Evaluate this predicate.

Specified by:

test in interface UnaryPredicate<java.lang.Object>

Parameters:

obj - the A object to test

Returns:

the result of this test

test

public boolean test(java.lang.Object a,
                    java.lang.Object b)

Evaluate this predicate.

Specified by:

test in interface BinaryPredicate<java.lang.Object,java.lang.Object>

Parameters:

a - the L element of the ordered pair of arguments

b - the R element of the ordered pair of arguments

Returns:

the result of this test for the given arguments

toString

public java.lang.String toString()

Returns a human readable description of this functor. Implementators are strongly encouraged but not strictly required to override the default Object implementation of this method.

Specified by:

toString in interface Functor

Overrides:

toString in class java.lang.Object

Returns:

a human readable description of this functor