org.tbull.util
Class Grepper.InverseGrepper<E>

Object
  org.tbull.util.Grepper.InverseGrepper<E>

All Implemented Interfaces:

Grepper<E>

Enclosing interface:

Grepper<E>

public static class Grepper.InverseGrepper<E>
extends Object
implements Grepper<E>

A Grepper that inverts the results of another grepper. If you have a Grepper and you need exactly the inverse results (i.e. you want to grep the elements your grepper rejects and want to reject the elements your grepper accepts), then wrap this one around the original grepper.

  Grepper<X> your_grepper;
  results = grep(new InverseGrepper<X>(your_grepper), input...);
  

Nested Class Summary

Nested classes/interfaces inherited from interface org.tbull.util.Grepper

Grepper.ANDGrepper<E>, Grepper.InverseGrepper<E>, Grepper.NULLGrepper<E>, Grepper.ONEGrepper<E>, Grepper.ORGrepper<E>, Grepper.RegexGrepper

Constructor Summary

Grepper.InverseGrepper(Grepper<E> grepper)

Method Summary

boolean

grep(E element) Returns true if the wrapped grepper returns false, and vice versa.

Methods inherited from class Object

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

Constructor Detail

Grepper.InverseGrepper

public Grepper.InverseGrepper(Grepper<E> grepper)

Method Detail

grep

public boolean grep(E element)

Returns true if the wrapped grepper returns false, and vice versa.

Specified by:

grep in interface Grepper<E>

Parameters:

element - The element under test.

Returns:

true if the element matches the grep condition, thus should be added to the results, otherwise false.