orbital.util
Class Filters

java.lang.Object
  orbital.util.Filters

public class Filters
extends java.lang.Object

Collection filtering implementations.

Implementing classes are usually stateless.

Author:

André Platzer

See Also:

Predicate, Collection

Field Summary

static Function	all Select *.
static Function	first Filter for first element.
static Function	last Filter for last element.

Constructor Summary

Filters()

Method Summary

static Function	ranged(int min, int max) Filtering range from min to max.
static Function	top(double number, boolean percent) Filter for the first number percent elements.
static Function	top(int number) Filter for the first number elements.

Methods inherited from class java.lang.Object

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

Field Detail

all

public static final Function all

Select *. Selects all data in the collection.

first

public static final Function first

Filter for first element.

last

public static final Function last

Filter for last element.

Constructor Detail

Filters

public Filters()

Method Detail

ranged

public static Function ranged(int min,
                              int max)

Filtering range from min to max. All elements with an index between min and max (including both) are filtered. The first element has index 0.

top

public static Function top(int number)

Filter for the first number elements.

See Also:

top(double, boolean)

top

public static Function top(double number,
                           boolean percent)

Filter for the first number percent elements.

Parameters:

percent - true to filter for the first number percent elements. false to filter for the first number elements top(int).

Preconditions:

number ∈ [0,100]