Package org.apache.commons.logging.impl

Class Jdk14Logger

java.lang.Object

org.apache.commons.logging.impl.Jdk14Logger

All Implemented Interfaces:

Serializable, Log

public class Jdk14Logger
extends Object
implements Log, Serializable

Implements the org.apache.commons.logging.Log interface to wrap the standard JDK logging mechanisms that were introduced in the Merlin release (JDK 1.4).

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected static final Level	dummyLevel	This member variable simply ensures that any attempt to initialize this class in a pre-1.4 JVM will result in an ExceptionInInitializerError.
protected Logger	logger	The underlying Logger implementation we are using.
protected String	name	The name of the logger we are wrapping.

Constructor Summary

Constructors

Constructor	Description
Jdk14Logger(String name)	Constructs a named instance of this Logger.

Method Summary

Modifier and Type	Method	Description
void	debug(Object message)	Logs a message with Level.FINE.
void	debug(Object message, Throwable exception)	Logs a message with Level.FINE.
void	error(Object message)	Logs a message with Level.SEVERE.
void	error(Object message, Throwable exception)	Logs a message with Level.SEVERE.
void	fatal(Object message)	Logs a message with Level.SEVERE.
void	fatal(Object message, Throwable exception)	Logs a message with Level.SEVERE.
Logger	getLogger()	Gets the native Logger instance we are using.
void	info(Object message)	Logs a message with Level.INFO.
void	info(Object message, Throwable exception)	Logs a message with Level.INFO.
boolean	isDebugEnabled()	Is debug logging currently enabled?
boolean	isErrorEnabled()	Is error logging currently enabled?
boolean	isFatalEnabled()	Is fatal logging currently enabled?
boolean	isInfoEnabled()	Is info logging currently enabled?
boolean	isTraceEnabled()	Is trace logging currently enabled?
boolean	isWarnEnabled()	Is warn logging currently enabled?
protected void	log(Level level, String msg, Throwable ex)	Logs a message at the given level.
void	trace(Object message)	Logs a message with Level.FINEST.
void	trace(Object message, Throwable exception)	Logs a message with Level.FINEST.
void	warn(Object message)	Logs a message with Level.WARNING.
void	warn(Object message, Throwable exception)	Logs a message with Level.WARNING.

Methods inherited from class java.lang.Object

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

Field Details

dummyLevel

protected static final Level dummyLevel

This member variable simply ensures that any attempt to initialize this class in a pre-1.4 JVM will result in an ExceptionInInitializerError. It must not be private, as an optimizing compiler could detect that it is not used and optimize it away.

logger

protected transient Logger logger

The underlying Logger implementation we are using.

name

protected String name

The name of the logger we are wrapping.

Constructor Details

Jdk14Logger

public Jdk14Logger(String name)

Constructs a named instance of this Logger.

Parameters:

name - Name of the logger to be constructed

Method Details

debug

public void debug(Object message)

Logs a message with Level.FINE.

Specified by:

debug in interface Log

Parameters:

message - to log

See Also:

• Log.debug(Object)

debug

public void debug(Object message,
 Throwable exception)

Logs a message with Level.FINE.

Specified by:

debug in interface Log

Parameters:

message - to log

exception - log this cause

See Also:

• Log.debug(Object, Throwable)

error

public void error(Object message)

Logs a message with Level.SEVERE.

Specified by:

error in interface Log

Parameters:

message - to log

See Also:

• Log.error(Object)

error

public void error(Object message,
 Throwable exception)

Logs a message with Level.SEVERE.

Specified by:

error in interface Log

Parameters:

message - to log

exception - log this cause

See Also:

• Log.error(Object, Throwable)

fatal

public void fatal(Object message)

Logs a message with Level.SEVERE.

Specified by:

fatal in interface Log

Parameters:

message - to log

See Also:

• Log.fatal(Object)

fatal

public void fatal(Object message,
 Throwable exception)

Logs a message with Level.SEVERE.

Specified by:

fatal in interface Log

Parameters:

message - to log

exception - log this cause

See Also:

• Log.fatal(Object, Throwable)

getLogger

public Logger getLogger()

Gets the native Logger instance we are using.

Returns:

the native Logger instance we are using.

info

public void info(Object message)

Logs a message with Level.INFO.

Specified by:

info in interface Log

Parameters:

message - to log

See Also:

• Log.info(Object)

info

public void info(Object message,
 Throwable exception)

Logs a message with Level.INFO.

Specified by:

info in interface Log

Parameters:

message - to log

exception - log this cause

See Also:

• Log.info(Object, Throwable)

isDebugEnabled

public boolean isDebugEnabled()

Is debug logging currently enabled?

Specified by:

isDebugEnabled in interface Log

Returns:

true if debug is enabled in the underlying logger.

isErrorEnabled

public boolean isErrorEnabled()

Is error logging currently enabled?

Specified by:

isErrorEnabled in interface Log

Returns:

true if error is enabled in the underlying logger.

isFatalEnabled

public boolean isFatalEnabled()

Is fatal logging currently enabled?

Specified by:

isFatalEnabled in interface Log

Returns:

true if fatal is enabled in the underlying logger.

isInfoEnabled

public boolean isInfoEnabled()

Is info logging currently enabled?

Specified by:

isInfoEnabled in interface Log

Returns:

true if info is enabled in the underlying logger.

isTraceEnabled

public boolean isTraceEnabled()

Is trace logging currently enabled?

Specified by:

isTraceEnabled in interface Log

Returns:

true if trace is enabled in the underlying logger.

isWarnEnabled

public boolean isWarnEnabled()

Is warn logging currently enabled?

Specified by:

isWarnEnabled in interface Log

Returns:

true if warn is enabled in the underlying logger.

log

protected void log(Level level,
 String msg,
 Throwable ex)

Logs a message at the given level.

Parameters:

level - The level.

msg - The message.

ex - The exception.

trace

public void trace(Object message)

Logs a message with Level.FINEST.

Specified by:

trace in interface Log

Parameters:

message - to log

See Also:

• Log.trace(Object)

trace

public void trace(Object message,
 Throwable exception)

Logs a message with Level.FINEST.

Specified by:

trace in interface Log

Parameters:

message - to log

exception - log this cause

See Also:

• Log.trace(Object, Throwable)

warn

public void warn(Object message)

Logs a message with Level.WARNING.

Specified by:

warn in interface Log

Parameters:

message - to log

See Also:

• Log.warn(Object)

warn

public void warn(Object message,
 Throwable exception)

Logs a message with Level.WARNING.

Specified by:

warn in interface Log

Parameters:

message - to log

exception - log this cause

See Also:

• Log.warn(Object, Throwable)