Comparators (TestHelpers 1.1-SNAPSHOT API)

java.lang.Object
- eu.simuline.util.Comparators<E>

Type Parameters:

E - the type to be compared. Created: Sat May 21 16:30:58 2005
```
public abstract class Comparators<E>
extends java.lang.Object
```
Collection of static methods related with Comparators.

Version:

1.0

Author:

Ernst Reissner

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`private static class`	`Comparators.AsListed<E>`	Implements an ordering given by the list `Comparators.AsListed.seq`.
`private static class`	`Comparators.Cascade<E>`	Represents a comparator which is a cascade of comparators: Starting with the first comparator in `Comparators.Cascade.seq` asks the next comparator if the current one detects equality.

Constructor Summary

Constructors
Constructor Description

Comparators()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static <E> java.util.Comparator<E>`	`getAsListed(java.util.List<E> seq)`	Returns an ordering given by the list `Comparators.AsListed.seq`.
`static <E> java.util.Comparator<E>`	`getCascade(java.util.Collection<java.util.Comparator<E>> seq)`
`static <E> java.util.Comparator<E>`	`getInv(java.util.Comparator<E> cmp)`
`static <E> java.util.Comparator<E>`	`getNegative(java.util.Comparator<E> cmp)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Comparators
```
public Comparators()
```
- Method Detail
  - getNegative
```
public static <E> java.util.Comparator<E> getNegative(java.util.Comparator<E> cmp)
```
  - getInv
```
public static <E> java.util.Comparator<E> getInv(java.util.Comparator<E> cmp)
```
  - getCascade
```
public static <E> java.util.Comparator<E> getCascade(java.util.Collection<java.util.Comparator<E>> seq)
```
  - getAsListed
```
public static <E> java.util.Comparator<E> getAsListed(java.util.List<E> seq)
```
    Returns an ordering given by the list Comparators.AsListed.seq. Elements not in the list are all minimal and pairwise equal with respect to this comparator. They are less than all elements in the list. The ordering on the list is ascending.
    CAUTION: This ordering is consistent with equals only under certain conditions. The other ordering axioms hold. For more details see Comparators.AsListed.
    Caution: changing the list, affects the comparator.
    
    Parameters:
    
    seq - a list which determines the ordering.
    
    Throws:
    
    java.lang.NullPointerException - if seq is null.