org.drools.ancompiler

Class ListUtils

java.lang.Object

org.drools.ancompiler.ListUtils

public class ListUtils
extends Object

Constructor Summary

Constructors

Constructor and Description
ListUtils()

Method Summary

Modifier and Type	Method and Description
static <T> List<List<T>>	partition(List<T> list, int size) Returns consecutive sublists of a list, each of the same size (the final list may be smaller).

Methods inherited from class java.lang.Object

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

Constructor Detail

ListUtils

public ListUtils()

Method Detail

partition

public static <T> List<List<T>> partition(List<T> list,
                                          int size)

Returns consecutive sublists of a list, each of the same size (the final list may be smaller). For example, partitioning a list containing [a, b, c, d, e] with a partition size of 3 yields [[a, b, c], [d, e]] -- an outer list containing two inner lists of three and two elements, all in the original order.

The outer list is unmodifiable, but reflects the latest state of the source list. The inner lists are sublist views of the original list, produced on demand using List.subList(int, int), and are subject to all the usual caveats about modification as explained in that API.

Adapted from http://code.google.com/p/guava-libraries/

Type Parameters:

T - the element type

Parameters:

list - the list to return consecutive sublists of

size - the desired size of each sublist (the last may be smaller)

Returns:

a list of consecutive sublists

Throws:

NullPointerException - if list is null

IllegalArgumentException - if size is not strictly positive

Since:

4.0