com.landawn.abacus.util

Class Fn.Predicates

java.lang.Object

com.landawn.abacus.util.Fn.Predicates

Enclosing class:

Fn

public abstract static class Fn.Predicates
extends java.lang.Object

Method Summary

Modifier and Type	Method and Description
static <T> Predicate<T>	concurrentDistinct()
static <T> Predicate<T>	concurrentDistinctBy(Function<? super T,?> mapper)
static <T> Predicate<T>	distinct()
static <T> Predicate<T>	distinctBy(Function<? super T,?> mapper)
static <T> Predicate<T>	indexed(IndexedPredicate<T> predicate)
static <T> Predicate<T>	invertedByDuration(long delayInMillis, long periodInMillis, MutableBoolean cancellationFlag) true/false are repeatedly returned after each specified duration.
static <T> Predicate<T>	invertedByDuration(long delayInMillis, long periodInMillis, MutableBoolean cancellationFlag, java.lang.Runnable update) true/false are repeatedly returned after each specified duration.
static <T> Predicate<T>	invertedByDuration(long periodInMillis, MutableBoolean cancellationFlag) true/false are repeatedly returned after each specified duration.
static <T> Predicate<T>	invertedByDuration(long periodInMillis, MutableBoolean cancellationFlag, java.lang.Runnable update) true/false are repeatedly returned after each specified duration.
static <T> Predicate<T>	skipRepeats() Remove the continuous repeat elements.

Methods inherited from class java.lang.Object

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

Method Detail

indexed

public static <T> Predicate<T> indexed(IndexedPredicate<T> predicate)

distinct

public static <T> Predicate<T> distinct()

distinctBy

public static <T> Predicate<T> distinctBy(Function<? super T,?> mapper)

concurrentDistinct

public static <T> Predicate<T> concurrentDistinct()

concurrentDistinctBy

public static <T> Predicate<T> concurrentDistinctBy(Function<? super T,?> mapper)

skipRepeats

public static <T> Predicate<T> skipRepeats()

Remove the continuous repeat elements. Returns a stateful predicate which should not be used in parallel stream.

Returns:

invertedByDuration

public static <T> Predicate<T> invertedByDuration(long periodInMillis,
                                                  MutableBoolean cancellationFlag)

true/false are repeatedly returned after each specified duration.

Parameters:

periodInMillis -

cancellationFlag - the underline scheduled Task will be cancelled if cancellationFlag is set to true.

Returns:

invertedByDuration

public static <T> Predicate<T> invertedByDuration(long periodInMillis,
                                                  MutableBoolean cancellationFlag,
                                                  java.lang.Runnable update)

true/false are repeatedly returned after each specified duration.

Parameters:

periodInMillis -

cancellationFlag - the underline scheduled Task will be cancelled if cancellationFlag is set to true.

update - called at the beginning of each duration.

Returns:

invertedByDuration

public static <T> Predicate<T> invertedByDuration(long delayInMillis,
                                                  long periodInMillis,
                                                  MutableBoolean cancellationFlag)

true/false are repeatedly returned after each specified duration.

Parameters:

delayInMillis -

periodInMillis -

cancellationFlag - the underline scheduled Task will be cancelled if cancellationFlag is set to true.

Returns:

invertedByDuration

public static <T> Predicate<T> invertedByDuration(long delayInMillis,
                                                  long periodInMillis,
                                                  MutableBoolean cancellationFlag,
                                                  java.lang.Runnable update)

true/false are repeatedly returned after each specified duration.

Parameters:

delayInMillis -

periodInMillis -

cancellationFlag - the underline scheduled Task will be cancelled if cancellationFlag is set to true.

update - called at the beginning of each duration.

Returns: