org.apache.avalon.excalibur.logger

Class Log4JLogger

java.lang.Object

org.apache.avalon.excalibur.logger.Log4JLogger

All Implemented Interfaces:

org.apache.avalon.framework.logger.Logger

public class Log4JLogger
extends java.lang.Object
implements org.apache.avalon.framework.logger.Logger

The default Log4J wrapper class for Logger. This implementation replaces the implementation from Avalon framework. It "caches" the log levels for improved performance.

Version:

CVS $Revision: 1.21 $ $Date: 2004/05/04 13:08:00 $

Author:

Avalon Development Team

Field Summary

Fields

Modifier and Type	Field and Description
private static java.lang.String	FQCN Constant for name of class to use when recording caller of log method.
private boolean	m_isDebugEnabled
private boolean	m_isErrorEnabled
private boolean	m_isFatalErrorEnabled
private boolean	m_isInfoEnabled
private boolean	m_isWarnEnabled
private org.apache.log4j.Logger	m_logger underlying implementation

Constructor Summary

Constructors

Constructor and Description
Log4JLogger(org.apache.log4j.Logger logImpl) Create a logger that delegates to specified category.

Method Summary

Methods

Modifier and Type	Method and Description
void	debug(java.lang.String message) Log a debug message.
void	debug(java.lang.String message, java.lang.Throwable throwable) Log a debug message.
void	error(java.lang.String message) Log a error message.
void	error(java.lang.String message, java.lang.Throwable throwable) Log a error message.
void	fatalError(java.lang.String message) Log a fatalError message.
void	fatalError(java.lang.String message, java.lang.Throwable throwable) Log a fatalError message.
org.apache.avalon.framework.logger.Logger	getChildLogger(java.lang.String name) Create a new child logger.
void	info(java.lang.String message) Log a info message.
void	info(java.lang.String message, java.lang.Throwable throwable) Log a info message.
boolean	isDebugEnabled() Determine if messages of priority "debug" will be logged.
boolean	isErrorEnabled() Determine if messages of priority "error" will be logged.
boolean	isFatalErrorEnabled() Determine if messages of priority "fatalError" will be logged.
boolean	isInfoEnabled() Determine if messages of priority "info" will be logged.
boolean	isWarnEnabled() Determine if messages of priority "warn" will be logged.
void	warn(java.lang.String message) Log a warn message.
void	warn(java.lang.String message, java.lang.Throwable throwable) Log a warn message.

Methods inherited from class java.lang.Object

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

Field Detail

FQCN

private static final java.lang.String FQCN

Constant for name of class to use when recording caller of log method.

m_logger

private final org.apache.log4j.Logger m_logger

underlying implementation

m_isDebugEnabled

private final boolean m_isDebugEnabled

m_isInfoEnabled

private final boolean m_isInfoEnabled

m_isWarnEnabled

private final boolean m_isWarnEnabled

m_isErrorEnabled

private final boolean m_isErrorEnabled

m_isFatalErrorEnabled

private final boolean m_isFatalErrorEnabled

Constructor Detail

Log4JLogger

public Log4JLogger(org.apache.log4j.Logger logImpl)

Create a logger that delegates to specified category.

Parameters:

logImpl - the category to delegate to

Method Detail

debug

public final void debug(java.lang.String message)

Log a debug message.

Specified by:

debug in interface org.apache.avalon.framework.logger.Logger

Parameters:

message - the message

debug

public final void debug(java.lang.String message,
         java.lang.Throwable throwable)

Log a debug message.

Specified by:

debug in interface org.apache.avalon.framework.logger.Logger

Parameters:

message - the message

throwable - the throwable

isDebugEnabled

public final boolean isDebugEnabled()

Determine if messages of priority "debug" will be logged.

Specified by:

isDebugEnabled in interface org.apache.avalon.framework.logger.Logger

Returns:

true if "debug" messages will be logged

info

public final void info(java.lang.String message)

Log a info message.

Specified by:

info in interface org.apache.avalon.framework.logger.Logger

Parameters:

message - the message

info

public final void info(java.lang.String message,
        java.lang.Throwable throwable)

Log a info message.

Specified by:

info in interface org.apache.avalon.framework.logger.Logger

Parameters:

message - the message

throwable - the throwable

isInfoEnabled

public final boolean isInfoEnabled()

Determine if messages of priority "info" will be logged.

Specified by:

isInfoEnabled in interface org.apache.avalon.framework.logger.Logger

Returns:

true if "info" messages will be logged

warn

public final void warn(java.lang.String message)

Log a warn message.

Specified by:

warn in interface org.apache.avalon.framework.logger.Logger

Parameters:

message - the message

warn

public final void warn(java.lang.String message,
        java.lang.Throwable throwable)

Log a warn message.

Specified by:

warn in interface org.apache.avalon.framework.logger.Logger

Parameters:

message - the message

throwable - the throwable

isWarnEnabled

public final boolean isWarnEnabled()

Determine if messages of priority "warn" will be logged.

Specified by:

isWarnEnabled in interface org.apache.avalon.framework.logger.Logger

Returns:

true if "warn" messages will be logged

error

public final void error(java.lang.String message)

Log a error message.

Specified by:

error in interface org.apache.avalon.framework.logger.Logger

Parameters:

message - the message

error

public final void error(java.lang.String message,
         java.lang.Throwable throwable)

Log a error message.

Specified by:

error in interface org.apache.avalon.framework.logger.Logger

Parameters:

message - the message

throwable - the throwable

isErrorEnabled

public final boolean isErrorEnabled()

Determine if messages of priority "error" will be logged.

Specified by:

isErrorEnabled in interface org.apache.avalon.framework.logger.Logger

Returns:

true if "error" messages will be logged

fatalError

public final void fatalError(java.lang.String message)

Log a fatalError message.

Specified by:

fatalError in interface org.apache.avalon.framework.logger.Logger

Parameters:

message - the message

fatalError

public final void fatalError(java.lang.String message,
              java.lang.Throwable throwable)

Log a fatalError message.

Specified by:

fatalError in interface org.apache.avalon.framework.logger.Logger

Parameters:

message - the message

throwable - the throwable

isFatalErrorEnabled

public final boolean isFatalErrorEnabled()

Determine if messages of priority "fatalError" will be logged.

Specified by:

isFatalErrorEnabled in interface org.apache.avalon.framework.logger.Logger

Returns:

true if "fatalError" messages will be logged

getChildLogger

public final org.apache.avalon.framework.logger.Logger getChildLogger(java.lang.String name)

Create a new child logger. The name of the child logger is [current-loggers-name].[passed-in-name] Throws IllegalArgumentException if name has an empty element name

Specified by:

getChildLogger in interface org.apache.avalon.framework.logger.Logger

Parameters:

name - the subname of this logger

Returns:

the new logger