com.levigo.util.log
Interface Logger

All Known Implementing Classes:

AbstractQualifiedLogger

public interface Logger

The main user interface to logging. It is expected that logging takes place through concrete implementations of this interface.

Since:

2.0.3

Field Summary

static String

ROOT_LOGGER_NAME Case insensitive String constant used to retrieve the name of the root logger.

Method Summary

void	debug(String msg) Log a message at the DEBUG level.
void	debug(String msg, Throwable t) Log an exception (throwable) at the DEBUG level with an accompanying message.
void	error(String msg) Log a message at the ERROR level.
void	error(String msg, Throwable t) Log an exception (throwable) at the ERROR level with an accompanying message.
void	fatal(String msg) Log a message at the WARN level.
void	fatal(String msg, Throwable t) Log an exception (throwable) at the WARN level with an accompanying message.
String	getName() Return the name of this Logger instance.
void	info(String msg) Log a message at the INFO level.
void	info(String msg, Throwable t) Log an exception (throwable) at the INFO level with an accompanying message.
boolean	isDebugEnabled() Is the logger instance enabled for the DEBUG level?
boolean	isErrorEnabled() Is the logger instance enabled for the ERROR level?
boolean	isFatalEnabled() Is the logger instance enabled for the FATAL level?
boolean	isInfoEnabled() Is the logger instance enabled for the INFO level?
boolean	isTraceEnabled() Is the logger instance enabled for the TRACE level?
boolean	isWarnEnabled() Is the logger instance enabled for the WARN level?
void	trace(String msg) Log a message at the TRACE level.
void	trace(String msg, Throwable t) Log an exception (throwable) at the TRACE level with an accompanying message.
void	warn(String msg) Log a message at the WARN level.
void	warn(String msg, Throwable t) Log an exception (throwable) at the WARN level with an accompanying message.

Field Detail

ROOT_LOGGER_NAME

static final String ROOT_LOGGER_NAME

Case insensitive String constant used to retrieve the name of the root logger.

Since:

1.3

See Also:

Constant Field Values

Method Detail

getName

String getName()

Return the name of this Logger instance.

isTraceEnabled

boolean isTraceEnabled()

Is the logger instance enabled for the TRACE level?

Returns:

True if this Logger is enabled for the TRACE level, false otherwise.

trace

void trace(String msg)

Log a message at the TRACE level.

Parameters:

msg - the message string to be logged

trace

void trace(String msg,
           Throwable t)

Log an exception (throwable) at the TRACE level with an accompanying message.

Parameters:

msg - the message accompanying the exception

t - the exception (throwable) to log

isDebugEnabled

boolean isDebugEnabled()

Is the logger instance enabled for the DEBUG level?

Returns:

True if this Logger is enabled for the DEBUG level, false otherwise.

debug

void debug(String msg)

Log a message at the DEBUG level.

Parameters:

msg - the message string to be logged

debug

void debug(String msg,
           Throwable t)

Log an exception (throwable) at the DEBUG level with an accompanying message.

Parameters:

msg - the message accompanying the exception

t - the exception (throwable) to log

isInfoEnabled

boolean isInfoEnabled()

Is the logger instance enabled for the INFO level?

Returns:

True if this Logger is enabled for the INFO level, false otherwise.

info

void info(String msg)

Log a message at the INFO level.

Parameters:

msg - the message string to be logged

info

void info(String msg,
          Throwable t)

Log an exception (throwable) at the INFO level with an accompanying message.

Parameters:

msg - the message accompanying the exception

t - the exception (throwable) to log

isWarnEnabled

boolean isWarnEnabled()

Is the logger instance enabled for the WARN level?

Returns:

True if this Logger is enabled for the WARN level, false otherwise.

warn

void warn(String msg)

Log a message at the WARN level.

Parameters:

msg - the message string to be logged

warn

void warn(String msg,
          Throwable t)

Log an exception (throwable) at the WARN level with an accompanying message.

Parameters:

msg - the message accompanying the exception

t - the exception (throwable) to log

isFatalEnabled

boolean isFatalEnabled()

Is the logger instance enabled for the FATAL level?

Returns:

True if this Logger is enabled for the FATAL level, false otherwise.

fatal

void fatal(String msg)

Log a message at the WARN level.

Parameters:

msg - the message string to be logged

fatal

void fatal(String msg,
           Throwable t)

Log an exception (throwable) at the WARN level with an accompanying message.

Parameters:

msg - the message accompanying the exception

t - the exception (throwable) to log

isErrorEnabled

boolean isErrorEnabled()

Is the logger instance enabled for the ERROR level?

Returns:

True if this Logger is enabled for the ERROR level, false otherwise.

error

void error(String msg)

Log a message at the ERROR level.

Parameters:

msg - the message string to be logged

error

void error(String msg,
           Throwable t)

Log an exception (throwable) at the ERROR level with an accompanying message.

Parameters:

msg - the message accompanying the exception

t - the exception (throwable) to log