org.apache.logging.log4j.util

Class LambdaUtil

java.lang.Object

org.apache.logging.log4j.util.LambdaUtil

public final class LambdaUtil
extends Object

Utility class for lambda support.

Method Summary

Modifier and Type	Method and Description
static Message	get(MessageSupplier supplier) Returns the Message supplied by the specified function.
static Object	get(Supplier<?> supplier) Returns the result of evaluating the specified function.
static Object[]	getAll(Supplier<?>... suppliers) Converts an array of lambda expressions into an array of their evaluation results.
static Message	getMessage(Supplier<?> supplier, MessageFactory messageFactory) Returns a Message, either the value supplied by the specified function, or a new Message created by the specified Factory.

Methods inherited from class java.lang.Object

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

Method Detail

getAll

public static Object[] getAll(Supplier<?>... suppliers)

Converts an array of lambda expressions into an array of their evaluation results.

Parameters:

suppliers - an array of lambda expressions or null

Returns:

an array containing the results of evaluating the lambda expressions (or null if the suppliers array was null

get

public static Object get(Supplier<?> supplier)

Returns the result of evaluating the specified function. If the supplied value is of type Message, this method returns the result of calling #getFormattedMessage on that Message.

Parameters:

supplier - a lambda expression or null

Returns:

the results of evaluating the lambda expression (or null if the supplier was null

get

public static Message get(MessageSupplier supplier)

Returns the Message supplied by the specified function.

Parameters:

supplier - a lambda expression or null

Returns:

the Message resulting from evaluating the lambda expression (or null if the supplier was null

getMessage

public static Message getMessage(Supplier<?> supplier,
                                 MessageFactory messageFactory)

Returns a Message, either the value supplied by the specified function, or a new Message created by the specified Factory.

Parameters:

supplier - a lambda expression or null

Returns:

the Message resulting from evaluating the lambda expression or the Message created by the factory for supplied values that are not of type Message