com.landawn.abacus.util

Class Fn.Predicates

java.lang.Object

com.landawn.abacus.util.Fn.Predicates

Enclosing class:

Fn

public static final class Fn.Predicates
extends Object

The Class Predicates.

Method Summary

Modifier and Type	Method and Description
static <T> Predicate<T>	concurrentDistinct() Returns a stateful Predicate.
static <T> Predicate<T>	concurrentDistinctBy(Function<? super T,?> mapper) Returns a stateful Predicate.
static <T> Predicate<T>	distinct() Returns a stateful Predicate.
static <T> Predicate<T>	distinctBy(Function<? super T,?> mapper) Returns a stateful Predicate.
static <T> Predicate<T>	indexed(IndexedPredicate<T> predicate) Returns a stateful Predicate.
static <T> Predicate<T>	invertedByDuration(long delayInMillis, long periodInMillis, MutableBoolean cancellationFlag) Deprecated.
static <T> Predicate<T>	invertedByDuration(long delayInMillis, long periodInMillis, MutableBoolean cancellationFlag, Runnable update) Deprecated.
static <T> Predicate<T>	invertedByDuration(long periodInMillis, MutableBoolean cancellationFlag) Deprecated.
static <T> Predicate<T>	invertedByDuration(long periodInMillis, MutableBoolean cancellationFlag, Runnable update) Deprecated.
static <T> Predicate<T>	skipRepeats() Returns a stateful Predicate.

Methods inherited from class java.lang.Object

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

Method Detail

indexed

@Beta
 @SequentialOnly
 @Stateful
public static <T> Predicate<T> indexed(IndexedPredicate<T> predicate)

Returns a stateful Predicate. Don't save or cache for reuse or use it in parallel stream.

Type Parameters:

T -

Parameters:

predicate -

Returns:

distinct

@Beta
 @SequentialOnly
 @Stateful
public static <T> Predicate<T> distinct()

Returns a stateful Predicate. Don't save or cache for reuse or use it in parallel stream.

Type Parameters:

T -

Returns:

distinctBy

@Beta
 @SequentialOnly
 @Stateful
public static <T> Predicate<T> distinctBy(Function<? super T,?> mapper)

Returns a stateful Predicate. Don't save or cache for reuse or use it in parallel stream.

Type Parameters:

T -

Parameters:

mapper -

Returns:

concurrentDistinct

@Beta
 @Stateful
public static <T> Predicate<T> concurrentDistinct()

Returns a stateful Predicate. Don't save or cache for reuse or use it in parallel stream.

Type Parameters:

T -

Returns:

concurrentDistinctBy

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

Returns a stateful Predicate. Don't save or cache for reuse or use it in parallel stream.

Type Parameters:

T -

Parameters:

mapper -

Returns:

skipRepeats

@Beta
 @SequentialOnly
 @Stateful
public static <T> Predicate<T> skipRepeats()

Returns a stateful Predicate. Don't save or cache for reuse or use it in parallel stream. Remove the continuous repeat elements.

Type Parameters:

T -

Returns:

invertedByDuration

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

Deprecated.

true/false are repeatedly returned after each specified duration.

Type Parameters:

T -

Parameters:

periodInMillis -

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

Returns:

invertedByDuration

@Deprecated
 @Beta
public static <T> Predicate<T> invertedByDuration(long periodInMillis,
                                                                       MutableBoolean cancellationFlag,
                                                                       Runnable update)

Deprecated.

true/false are repeatedly returned after each specified duration.

Type Parameters:

T -

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

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

Deprecated.

true/false are repeatedly returned after each specified duration.

Type Parameters:

T -

Parameters:

delayInMillis -

periodInMillis -

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

Returns:

invertedByDuration

@Deprecated
 @Beta
public static <T> Predicate<T> invertedByDuration(long delayInMillis,
                                                                       long periodInMillis,
                                                                       MutableBoolean cancellationFlag,
                                                                       Runnable update)

Deprecated.

true/false are repeatedly returned after each specified duration.

Type Parameters:

T -

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: