org.apache.ojb.broker.util.logging
Class Log4jLoggerImpl

java.lang.Object
  org.apache.ojb.broker.util.logging.Log4jLoggerImpl

All Implemented Interfaces:

Serializable, Configurable, Logger

public class Log4jLoggerImpl
extends Object
implements Logger

This is a Logger implementation based on Log4j. It can be enabled by putting LoggerClass=org.apache.ojb.broker.util.logging.Log4jLoggerImpl in the OJB .properties file.
If you want log4j to initialize from a property file you can add LoggerConfigFile=log4j.properties to the org.apache.ojb.properties file. the logger only initializes log4j if the application hasn't done it yet You can find sample log4j.properties file in the log4j web site http://jakarta.apache.org/log4j in the javadoc look for org.apache.log4j.examples

Version:

$Id: Log4jLoggerImpl.java,v 1.1 2007-08-24 22:17:32 ewestfal Exp $

Author:

Bertrand, Thomas Mahler

See Also:

Serialized Form

Field Summary

private static String	FQCN
private static boolean	log4jConfigured flag about log4j configuration state
private org.apache.log4j.Logger	logger
private String	name

Fields inherited from interface org.apache.ojb.broker.util.logging.Logger

DEBUG, ERROR, FATAL, INFO, serialVersionUID, WARN

Constructor Summary

Log4jLoggerImpl(String name)

Method Summary

void	configure(Configuration config) Configure this logging.
void	debug(Object pObject) generate a message for loglevel DEBUG
void	debug(Object message, Throwable obj)
void	error(Object pObject) generate a message for loglevel ERROR
void	error(Object message, Throwable obj)
void	fatal(Object pObject) generate a message for loglevel FATAL
void	fatal(Object message, Throwable obj)
private org.apache.log4j.Level	getLevel()
private org.apache.log4j.Logger	getLogger() Gets the logger.
String	getName() returns the name of the logger isntance
void	info(Object pObject) generate a message for loglevel INFO
void	info(Object message, Throwable obj)
private static void	initializeLog4JSubSystem(String configFile) Initialization of log4j NOTE - if log4j property file is called log4j.properties then log4j will be configured already.
boolean	isDebugEnabled()
boolean	isEnabledFor(int priority)
private static boolean	isLog4JConfigured() Helper method to check if log4j is already configured
void	safeDebug(String message, Object obj) Exception safe log method.
void	safeDebug(String message, Object obj, Throwable throwable) Exception safe log method.
void	safeError(String message, Object obj) Exception safe log method.
void	safeError(String message, Object obj, Throwable throwable) Exception safe log method.
void	safeFatal(String message, Object obj) Exception safe log method.
void	safeFatal(String message, Object obj, Throwable throwable) Exception safe log method.
void	safeInfo(String message, Object obj) Exception safe log method.
void	safeInfo(String message, Object obj, Throwable throwable) Exception safe log method.
void	safeWarn(String message, Object obj) Exception safe log method.
void	safeWarn(String message, Object obj, Throwable throwable) Exception safe log method.
void	warn(Object pObject) generate a message for loglevel WARN
void	warn(Object message, Throwable obj)

Methods inherited from class java.lang.Object

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

Field Detail

FQCN

private static final String FQCN

log4jConfigured

private static boolean log4jConfigured

flag about log4j configuration state

logger

private transient org.apache.log4j.Logger logger

name

private String name

Constructor Detail

Log4jLoggerImpl

public Log4jLoggerImpl(String name)

Method Detail

isLog4JConfigured

private static boolean isLog4JConfigured()

Helper method to check if log4j is already configured

initializeLog4JSubSystem

private static void initializeLog4JSubSystem(String configFile)

Initialization of log4j
NOTE - if log4j property file is called log4j.properties then log4j will be configured already.

configure

public void configure(Configuration config)
               throws ConfigurationException

Description copied from interface: Logger

Configure this logging. Note that the config object will be an instance of LoggingConfiguration.

Specified by:

configure in interface Configurable

Specified by:

configure in interface Logger

Parameters:

config - The LoggingConfiguration object

Throws:

ConfigurationException

See Also:

This method must be performed by LogFactory after creating a logger instance.

getLogger

private org.apache.log4j.Logger getLogger()

Gets the logger.

Returns:

Returns a Category

getName

public String getName()

Description copied from interface: Logger

returns the name of the logger isntance

Specified by:

getName in interface Logger

getLevel

private org.apache.log4j.Level getLevel()

debug

public final void debug(Object pObject)

generate a message for loglevel DEBUG

Specified by:

debug in interface Logger

Parameters:

pObject - the message Object

info

public final void info(Object pObject)

generate a message for loglevel INFO

Specified by:

info in interface Logger

Parameters:

pObject - the message Object

warn

public final void warn(Object pObject)

generate a message for loglevel WARN

Specified by:

warn in interface Logger

Parameters:

pObject - the message Object

error

public final void error(Object pObject)

generate a message for loglevel ERROR

Specified by:

error in interface Logger

Parameters:

pObject - the message Object

fatal

public final void fatal(Object pObject)

generate a message for loglevel FATAL

Specified by:

fatal in interface Logger

Parameters:

pObject - the message Object

debug

public void debug(Object message,
                  Throwable obj)

Specified by:

debug in interface Logger

error

public void error(Object message,
                  Throwable obj)

Specified by:

error in interface Logger

fatal

public void fatal(Object message,
                  Throwable obj)

Specified by:

fatal in interface Logger

info

public void info(Object message,
                 Throwable obj)

Specified by:

info in interface Logger

warn

public void warn(Object message,
                 Throwable obj)

Specified by:

warn in interface Logger

safeDebug

public void safeDebug(String message,
                      Object obj)

Description copied from interface: Logger

Exception safe log method. This method can be used to prevent any exception thrown by obj.toString() implementations. Log level used : DEBUG

Specified by:

safeDebug in interface Logger

safeDebug

public void safeDebug(String message,
                      Object obj,
                      Throwable throwable)

Description copied from interface: Logger

Exception safe log method. This method can be used to prevent any exception thrown by obj.toString() implementations. Log level used : DEBUG

Specified by:

safeDebug in interface Logger

safeInfo

public void safeInfo(String message,
                     Object obj)

Description copied from interface: Logger

Exception safe log method. This method can be used to prevent any exception thrown by obj.toString() implementations. Log level used : INFO

Specified by:

safeInfo in interface Logger

safeInfo

public void safeInfo(String message,
                     Object obj,
                     Throwable throwable)

Description copied from interface: Logger

Exception safe log method. This method can be used to prevent any exception thrown by obj.toString() implementations. Log level used : INFO

Specified by:

safeInfo in interface Logger

safeWarn

public void safeWarn(String message,
                     Object obj)

Description copied from interface: Logger

Exception safe log method. This method can be used to prevent any exception thrown by obj.toString() implementations. Log level used : WARN

Specified by:

safeWarn in interface Logger

safeWarn

public void safeWarn(String message,
                     Object obj,
                     Throwable throwable)

Description copied from interface: Logger

Exception safe log method. This method can be used to prevent any exception thrown by obj.toString() implementations. Log level used : WARN

Specified by:

safeWarn in interface Logger

safeError

public void safeError(String message,
                      Object obj)

Description copied from interface: Logger

Exception safe log method. This method can be used to prevent any exception thrown by obj.toString() implementations. Log level used : ERROR

Specified by:

safeError in interface Logger

safeError

public void safeError(String message,
                      Object obj,
                      Throwable throwable)

Description copied from interface: Logger

Exception safe log method. This method can be used to prevent any exception thrown by obj.toString() implementations. Log level used : ERROR

Specified by:

safeError in interface Logger

safeFatal

public void safeFatal(String message,
                      Object obj)

Description copied from interface: Logger

Exception safe log method. This method can be used to prevent any exception thrown by obj.toString() implementations. Log level used : FATAL

Specified by:

safeFatal in interface Logger

safeFatal

public void safeFatal(String message,
                      Object obj,
                      Throwable throwable)

Description copied from interface: Logger

Exception safe log method. This method can be used to prevent any exception thrown by obj.toString() implementations. Log level used : FATAL

Specified by:

safeFatal in interface Logger

isDebugEnabled

public boolean isDebugEnabled()

Specified by:

isDebugEnabled in interface Logger

isEnabledFor

public boolean isEnabledFor(int priority)

Specified by:

isEnabledFor in interface Logger