org.geotools.util.logging

Class CommonsLoggerFactory

Object

LoggerFactory<Log>

CommonsLoggerFactory

public class CommonsLoggerFactory
extends LoggerFactory<Log>

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

Out of the box commons logging delegates to the java util logging framework (using the class org.apache.commons.logging.impl.Jdk14Logger). If this factory detects Commons logging is already delegating to Jdk14Logger it will return null allowing java util logging directly.

Since:

2.4

Author:

Martin Desruisseaux

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	CommonsLoggerFactory() Constructs a default factory.

Method Summary

Modifier and Type	Method and Description
protected Log	getImplementation(String name) Returns the implementation to use for the logger of the specified name, or null if the logger would delegate to Java logging anyway.
static CommonsLoggerFactory	getInstance() Returns the unique instance of this factory.
String	lookupConfiguration() Look up configuration information, or null unknown.
protected Log	unwrap(Logger logger) Returns the implementation wrapped by the specified logger, or null if none.
protected Logger	wrap(String name, Log 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 Detail

CommonsLoggerFactory

protected CommonsLoggerFactory()
                        throws NoClassDefFoundError

Constructs a default factory.

Throws:

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

Method Detail

getInstance

public static CommonsLoggerFactory 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 Log getImplementation(String name)

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

Specified by:

getImplementation in class LoggerFactory<Log>

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,
                      Log implementation)

Wraps the specified implementation in a Java logger.

Specified by:

wrap in class LoggerFactory<Log>

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 Log unwrap(Logger logger)

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

Specified by:

unwrap in class LoggerFactory<Log>

Parameters:

logger - The logger to test.

Returns:

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

lookupConfiguration

public String lookupConfiguration()

Description copied from class: LoggerFactory

Look up configuration information, or null unknown.

Report back details on how logging configuration is setup. Ideally including configuration filename along with any system properties used.

Overrides:

lookupConfiguration in class LoggerFactory<Log>

Returns:

configuration information, or null unknown.