Package org.geotools.util.logging

Class Log4J2LoggerFactory

Object

LoggerFactory<Logger>

Log4J2LoggerFactory

public class Log4J2LoggerFactory
extends LoggerFactory<Logger>

A factory for loggers that redirect all Java logging events to the Apache's Log4J framework.

The GeoTools.init() method will select Log4J2LoggerFactory if log4j api is available on the classpath, however if you have several logging libraries on the classpath call GeoTools.setLoggerFactory(Log4J2LoggerFactory#getInstance()).

Since:

27

Author:

Jody Garnett (GeoCat)

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Log4J2LoggerFactory()	Constructs a default factory.

Method Summary

Modifier and Type	Method	Description
protected Logger	getImplementation(String name)	Returns the implementation to use for the logger of the specified name, or null if the logger would delegates to Java logging anyway.
static Log4J2LoggerFactory	getInstance()	Returns the unique instance of this factory.
String	lookupConfiguration()	Indication of Log4J configuration details, often a configuration filename or setting.
protected Logger	unwrap(Logger logger)	Returns the implementation wrapped by the specified logger, or null if none.
protected Logger	wrap(String name, Logger implementation)	Wraps the specified implementation in a Java logger.

Methods inherited from class LoggerFactory

getImplementationClass, getLogger

Methods inherited from class Object

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

Constructor Details

Log4J2LoggerFactory

protected Log4J2LoggerFactory()
                       throws NoClassDefFoundError

Constructs a default factory.

Throws:

NoClassDefFoundError - if Apache's Log class was not found on the classpath.

Method Details

getInstance

public static Log4J2LoggerFactory getInstance()
                                       throws NoClassDefFoundError

Returns the unique instance of this factory.

Throws:

NoClassDefFoundError - if Apache's Log class was not found on the classpath.

getImplementation

protected Logger getImplementation(String name)

Returns the implementation to use for the logger of the specified name, or null if the logger would delegates to Java logging anyway.

Specified by:

getImplementation in class LoggerFactory<Logger>

Parameters:

name - The name of the logger.

Returns:

The logger as an object of the target logging framework (Log4J, SLF4J, etc.), or null if the target framework would redirect to the Java logging framework.

wrap

protected Logger wrap(String name,
 Logger implementation)

Wraps the specified implementation in a Java logger.

Specified by:

wrap in class LoggerFactory<Logger>

Parameters:

name - The name of the logger.

implementation - An implementation returned by LoggerFactory.getImplementation(java.lang.String).

Returns:

A new logger wrapping the specified implementation.

unwrap

protected Logger unwrap(Logger logger)

Returns the implementation wrapped by the specified logger, or null if none.

Specified by:

unwrap in class LoggerFactory<Logger>

Parameters:

logger - The logger to test.

Returns:

The implementation wrapped by the specified logger, or null if none.

lookupConfiguration

public String lookupConfiguration()

Indication of Log4J configuration details, often a configuration filename or setting.

Overrides:

lookupConfiguration in class LoggerFactory<Logger>

Returns:

Log4J configuration details, often a filename or setting.