js.log

Class DefaultLog

java.lang.Object

js.log.AbstractLog

js.log.DefaultLog

All Implemented Interfaces:

Log

final class DefaultLog
extends AbstractLog

Default logger used when logger implementation is missing. It sends logging messages to standard output.

Version:

final

Author:

Iulian Rotaru

Field Summary

Fields

Modifier and Type	Field and Description
private static DateFormat	DATE_FMT Log message date format.
private String	loggerName Logger name, usually the qualified name of the target class.

Constructor Summary

Constructors

Constructor and Description
DefaultLog(String loggerName) Create default logger with given logger name.

Method Summary

Modifier and Type	Method and Description
void	dump(Object message, Throwable throwable) Dump throwable stack trace to this logger using fatal level.
protected boolean	isLoggable(LogLevel level) Test if log level is loggable.
protected void	log(LogLevel level, String message) Write log message if requested level is loggable.
void	print(LogLevel level, String message) Write message directly to logger with specified logging level.

Methods inherited from class js.log.AbstractLog

bug, bug, debug, debug, ellipsis, error, error, fatal, fatal, info, info, message, trace, trace, warn, warn

Methods inherited from class java.lang.Object

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

Field Detail

DATE_FMT

private static final DateFormat DATE_FMT

Log message date format.

loggerName

private String loggerName

Logger name, usually the qualified name of the target class.

Constructor Detail

DefaultLog

public DefaultLog(String loggerName)

Create default logger with given logger name.

Parameters:

loggerName - logger name.

Method Detail

isLoggable

protected boolean isLoggable(LogLevel level)

Description copied from class: AbstractLog

Test if log level is loggable.

Specified by:

isLoggable in class AbstractLog

Parameters:

level - log level.

Returns:

true if log level is loggable.

log

protected void log(LogLevel level,
                   String message)

Description copied from class: AbstractLog

Write log message if requested level is loggable. If message argument is null this method is NOP.

Specified by:

log in class AbstractLog

Parameters:

level - log level,

message - log message, possible null.

dump

public void dump(Object message,
                 Throwable throwable)

Description copied from interface: Log

Dump throwable stack trace to this logger using fatal level. Object message is converted to string and write before stack trace as a separate log record. This method guarantees atomic operation, that is, no other log record present between object message and stack dump.

If fatal level is not enabled this method does nothing.

Parameters:

message - object message,

throwable - throwable to dump stack trace for.

print

public void print(LogLevel level,
                  String message)

Description copied from interface: Log

Write message directly to logger with specified logging level. Anyway, if level is disabled message is not printed. This method is considered low level and is not intended for general use.

Parameters:

level - requested log level,

message - log message.