Package it.tidalwave.util

Interface Finder.InMemorySortCriterion<U>

All Superinterfaces:

Finder.SortCriterion

All Known Implementing Classes:

Finder.InMemorySortCriterion.DefaultInMemorySortCriterion

Enclosing interface:

Finder<T>

public static interface Finder.InMemorySortCriterion<U>
extends Finder.SortCriterion

An interface that should be implemented by specific Finder.SortCriterion objects which are capable to implement by themselves the sorting of objects, by post-processing an existing collection of objects. While this is often convenient, it is possible for it to be inefficient in cases in which the original source of objects is capable to perform the sort in an optimized way (e.g. an SQL database by means of ORDER BY). The facility class HierarchicFinderSupport supports FilterSortCriterion objects out of the box.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	Finder.InMemorySortCriterion.DefaultInMemorySortCriterion<U>

Field Summary

Fields inherited from interface it.tidalwave.util.Finder.SortCriterion

_SortCriterion_, DEFAULT, UNSORTED

Method Summary

Modifier and Type	Method	Description
static <U> Finder.InMemorySortCriterion<U>	of(java.util.Comparator<? super U> comparator)	Creates a new in-memory SortCriterion based on a Comparator.
static <U> Finder.InMemorySortCriterion<U>	of(java.util.Comparator<? super U> comparator, java.lang.String name)	Creates a new in-memory SortCriterion based on a Comparator.
default void	sort(java.util.List<? extends U> results)	Performs the sort of results.
void	sort(java.util.List<? extends U> results, Finder.SortDirection sortDirection)	Performs the sort of results.

Method Detail

sort

default void sort(@Nonnull
                  java.util.List<? extends U> results)

Performs the sort of results.

Parameters:

results - the list of objects to be sorted in place

sort

void sort(@Nonnull
          java.util.List<? extends U> results,
          @Nonnull
          Finder.SortDirection sortDirection)

Performs the sort of results.

Parameters:

results - the list of objects to be sorted in place

sortDirection - the sort direction

of

@Nonnull
static <U> Finder.InMemorySortCriterion<U> of(@Nonnull
                                              java.util.Comparator<? super U> comparator)

Creates a new in-memory SortCriterion based on a Comparator.

Type Parameters:

U - the type of the objects to compare

Parameters:

comparator - the Comparator

Returns:

the new SortCriterion

of

@Nonnull
static <U> Finder.InMemorySortCriterion<U> of(@Nonnull
                                              java.util.Comparator<? super U> comparator,
                                              @Nonnull
                                              java.lang.String name)

Creates a new in-memory SortCriterion based on a Comparator.

Type Parameters:

U - the type of the objects to compare

Parameters:

comparator - the Comparator

name - a name

Returns:

the new SortCriterion