Package org.apache.log4j.legacy.core

Class CategoryUtil

java.lang.Object

org.apache.log4j.legacy.core.CategoryUtil

public final class CategoryUtil
extends Object

Delegates to Logger methods implemented by log4j-core if appropriate.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	CategoryUtil()

Method Summary

Modifier and Type	Method	Description
static void	addAppender(Logger logger, Appender appender)	Adds an appender to the logger.
private static Logger	asCore(Logger logger)
private static <T> T	get(Logger logger, Supplier<T> run, T defaultValue)
static Map<String,Appender>	getAppenders(Logger logger)	Gets the appenders attached directly to this logger.
private static Map<String,Appender>	getDirectAppenders(Logger logger)
private static Optional<LoggerConfig>	getExactLoggerConfig(Logger logger)
static Iterator<Filter>	getFilters(Logger logger)	Delegates to Logger.getFilters() if appropriate.
static LoggerContext	getLoggerContext(Logger logger)	Delegates to Logger.getContext() if appropriate.
static Logger	getParent(Logger logger)	Delegates to Logger.getParent() if appropriate.
static boolean	isAdditive(Logger logger)	Delegates to Logger.isAdditive() if appropriate.
private static boolean	isCore(Logger logger)
static void	log(Logger logger, LogEvent event)	Sends the event to all appenders directly connected with the logger.
static void	setAdditivity(Logger logger, boolean additive)	Delegates to Logger.setAdditive(boolean) if appropriate.
static void	setLevel(Logger logger, Level level)	Delegates to Logger.setLevel(Level) if appropriate.

Methods inherited from class java.lang.Object

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

Constructor Details

CategoryUtil

private CategoryUtil()

Method Details

asCore

private static Logger asCore(Logger logger)

get

private static <T> T get(Logger logger,
 Supplier<T> run,
 T defaultValue)

getAppenders

public static Map<String,Appender> getAppenders(Logger logger)

Gets the appenders attached directly to this logger.

Parameters:

logger - The target logger.

Returns:

A Map containing the Appender's name as the key and the Appender as the value.

getDirectAppenders

private static Map<String,Appender> getDirectAppenders(Logger logger)

getExactLoggerConfig

private static Optional<LoggerConfig> getExactLoggerConfig(Logger logger)

getFilters

public static Iterator<Filter> getFilters(Logger logger)

Delegates to Logger.getFilters() if appropriate.

Parameters:

logger - The target logger.

Returns:

An Iterator over all the Filters associated with the Logger.

getLoggerContext

public static LoggerContext getLoggerContext(Logger logger)

Delegates to Logger.getContext() if appropriate.

Parameters:

logger - The target logger.

Returns:

the LoggerContext.

getParent

public static Logger getParent(Logger logger)

Delegates to Logger.getParent() if appropriate.

Parameters:

logger - The target logger.

Returns:

The parent Logger.

isAdditive

public static boolean isAdditive(Logger logger)

Delegates to Logger.isAdditive() if appropriate.

Parameters:

logger - The target logger.

Returns:

true if the associated LoggerConfig is additive, false otherwise.

isCore

private static boolean isCore(Logger logger)

setAdditivity

public static void setAdditivity(Logger logger,
 boolean additive)

Delegates to Logger.setAdditive(boolean) if appropriate.

Parameters:

logger - The target logger.

additive - Boolean value to indicate whether the Logger is additive or not.

setLevel

public static void setLevel(Logger logger,
 Level level)

Delegates to Logger.setLevel(Level) if appropriate.

Parameters:

logger - The target logger.

level - The Level to use on this Logger, may be null.

addAppender

public static void addAppender(Logger logger,
 Appender appender)

Adds an appender to the logger. This method requires a check for the presence of Log4j Core or it will cause a ClassNotFoundException.

Parameters:

logger - The target logger.

appender - A Log4j2 appender.

log

public static void log(Logger logger,
 LogEvent event)

Sends the event to all appenders directly connected with the logger. This method requires a check for the presence of Log4j Core or it will cause a ClassNotFoundException.

Parameters:

logger - The target logger.

event - The event to send.