Class PagingPredicate<K,V>

java.lang.Object

com.loomcache.server.query.PagingPredicate<K,V>

All Implemented Interfaces:

MapPredicate<K,V>

public final class PagingPredicate<K,V>
extends Object
implements MapPredicate<K,V>

Stateful map-entry predicate that returns one page of matching entries at a time.

This mirrors Hazelcast's PagingPredicate shape: the predicate carries mutable page state and is therefore not thread-safe. Callers should use one instance per iteration flow.

Constructor Summary

Constructors

Constructor	Description
PagingPredicate(MapPredicate<K,V> predicate, int pageSize)
PagingPredicate(MapPredicate<K,V> predicate, Comparator<? super Map.Entry<K,V>> comparator, int pageSize)

Method Summary

Modifier and Type	Method	Description
Comparator<? super Map.Entry<K,V>>	comparator()
static <K,V> List<Map.Entry<K,V>>	filterEntries(MapPredicate<K,V> predicate, Collection<Map.Entry<K,V>> entries)
void	nextPage()
int	page()
List<Map.Entry<K,V>>	page(Collection<Map.Entry<K,V>> entries)
int	pageSize()
MapPredicate<K,V>	predicate()
void	previousPage()
void	reset()
void	setPage(int page)
boolean	test(K key, V value)	Tests whether the given map entry matches this predicate.
String	toString()

Methods inherited from class Object

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

Constructor Details

PagingPredicate

public PagingPredicate(MapPredicate<K,V> predicate,
 int pageSize)

PagingPredicate

public PagingPredicate(MapPredicate<K,V> predicate,
 Comparator<? super Map.Entry<K,V>> comparator,
 int pageSize)

Method Details

predicate

public MapPredicate<K,V> predicate()

comparator

public Comparator<? super Map.Entry<K,V>> comparator()

pageSize

public int pageSize()

page

public int page()

nextPage

public void nextPage()

previousPage

public void previousPage()

reset

public void reset()

setPage

public void setPage(int page)

test

public boolean test(K key,
 V value)

Description copied from interface: MapPredicate

Tests whether the given map entry matches this predicate.

Specified by:

test in interface MapPredicate<K,V>

Parameters:

key - the entry key (non-null)

value - the entry value (non-null)

Returns:

true if the entry matches, false otherwise

page

public List<Map.Entry<K,V>> page(Collection<Map.Entry<K,V>> entries)

filterEntries

public static <K,V> List<Map.Entry<K,V>> filterEntries(MapPredicate<K,V> predicate,
 Collection<Map.Entry<K,V>> entries)

toString

public String toString()

Overrides:

toString in class Object