org.apache.commons.logging.impl

Class Log4jProxy

java.lang.Object

org.apache.commons.logging.impl.Log4jProxy

All Implemented Interfaces:

java.io.Serializable, Log

public class Log4jProxy
extends java.lang.Object
implements Log, java.io.Serializable

A Log implementation that reflectively queries for the log4j Logger methods using the current thread context class loader.

Version:

$Revision: 1.3.6.3 $

Author:

Scott.Stark@jboss.org

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.Object	DEBUG
private java.lang.Object	ERROR
private java.lang.Object	FATAL The jboss custom Level for TRACE
private java.lang.Object	INFO
private java.lang.reflect.Method	isEnabledFor isEnabledFor(Priority level)
private java.lang.reflect.Method	log log(String callerFQCN, Priority level, Object message, Throwable t)
private java.lang.Object	logger The log4j Logger
private static java.lang.String	PROXY_FQCN Use the Log4JLogger so that the %C format works correctly
private static long	serialVersionUID
private java.lang.Object	TRACE
private java.lang.Object	WARN

Constructor Summary

Constructors

Constructor and Description
Log4jProxy(java.lang.String name)

Method Summary

Methods

Modifier and Type	Method and Description
void	debug(java.lang.Object message) Log a message with debug log level.
void	debug(java.lang.Object message, java.lang.Throwable t) Log an error with debug log level.
static void	displayClassInfo(java.lang.Class clazz, java.lang.StringBuffer results)
void	error(java.lang.Object message) Log a message with error log level.
void	error(java.lang.Object message, java.lang.Throwable t) Log an error with error log level.
void	fatal(java.lang.Object message) Log a message with fatal log level.
void	fatal(java.lang.Object message, java.lang.Throwable t) Log an error with fatal log level.
static java.net.URL[]	getClassLoaderURLs(java.lang.ClassLoader cl) Use reflection to access a URL[] getURLs or URL[] getClasspath method so that non-URLClassLoader class loaders, or class loaders that override getURLs to return null or empty, can provide the true classpath info.
void	info(java.lang.Object message) Log a message with info log level.
void	info(java.lang.Object message, java.lang.Throwable t) Log an error with info log level.
boolean	isDebugEnabled() Is debug logging currently enabled?
private boolean	isEnabledFor(java.lang.Object level)
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?
private void	log(java.lang.Object level, java.lang.Object message, java.lang.Throwable t)
(package private) static java.lang.ClassLoader	threadContextClassLoader()
void	trace(java.lang.Object message) Log a message with trace log level.
void	trace(java.lang.Object message, java.lang.Throwable t) Log an error with trace log level.
void	warn(java.lang.Object message) Log a message with warn log level.
void	warn(java.lang.Object message, java.lang.Throwable t) Log an error with warn log level.

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

PROXY_FQCN

private static final java.lang.String PROXY_FQCN

Use the Log4JLogger so that the %C format works correctly

See Also:

Constant Field Values

FATAL

private java.lang.Object FATAL

The jboss custom Level for TRACE

ERROR

private java.lang.Object ERROR

WARN

private java.lang.Object WARN

INFO

private java.lang.Object INFO

DEBUG

private java.lang.Object DEBUG

TRACE

private java.lang.Object TRACE

logger

private transient java.lang.Object logger

The log4j Logger

isEnabledFor

private java.lang.reflect.Method isEnabledFor

isEnabledFor(Priority level)

log

private java.lang.reflect.Method log

log(String callerFQCN, Priority level, Object message, Throwable t)

Constructor Detail

Log4jProxy

Log4jProxy(java.lang.String name)

Method Detail

threadContextClassLoader

static java.lang.ClassLoader threadContextClassLoader()

isDebugEnabled

public boolean isDebugEnabled()

Description copied from interface: Log

Is debug logging currently enabled?

Call this method to prevent having to perform expensive operations (for example, String concatenation) when the log level is more than debug.

Specified by:

isDebugEnabled in interface Log

Returns:

true if debug is enabled in the underlying logger.

isErrorEnabled

public boolean isErrorEnabled()

Description copied from interface: Log

Is error logging currently enabled?

Call this method to prevent having to perform expensive operations (for example, String concatenation) when the log level is more than error.

Specified by:

isErrorEnabled in interface Log

Returns:

true if error is enabled in the underlying logger.

isFatalEnabled

public boolean isFatalEnabled()

Description copied from interface: Log

Is fatal logging currently enabled?

Call this method to prevent having to perform expensive operations (for example, String concatenation) when the log level is more than fatal.

Specified by:

isFatalEnabled in interface Log

Returns:

true if fatal is enabled in the underlying logger.

isInfoEnabled

public boolean isInfoEnabled()

Description copied from interface: Log

Is info logging currently enabled?

Call this method to prevent having to perform expensive operations (for example, String concatenation) when the log level is more than info.

Specified by:

isInfoEnabled in interface Log

Returns:

true if info is enabled in the underlying logger.

isTraceEnabled

public boolean isTraceEnabled()

Description copied from interface: Log

Is trace logging currently enabled?

Call this method to prevent having to perform expensive operations (for example, String concatenation) when the log level is more than trace.

Specified by:

isTraceEnabled in interface Log

Returns:

true if trace is enabled in the underlying logger.

isWarnEnabled

public boolean isWarnEnabled()

Description copied from interface: Log

Is warn logging currently enabled?

Call this method to prevent having to perform expensive operations (for example, String concatenation) when the log level is more than warn.

Specified by:

isWarnEnabled in interface Log

Returns:

true if warn is enabled in the underlying logger.

trace

public void trace(java.lang.Object message)

Description copied from interface: Log

Log a message with trace log level.

Specified by:

trace in interface Log

Parameters:

message - log this message

trace

public void trace(java.lang.Object message,
         java.lang.Throwable t)

Description copied from interface: Log

Log an error with trace log level.

Specified by:

trace in interface Log

Parameters:

message - log this message

t - log this cause

debug

public void debug(java.lang.Object message)

Description copied from interface: Log

Log a message with debug log level.

Specified by:

debug in interface Log

Parameters:

message - log this message

debug

public void debug(java.lang.Object message,
         java.lang.Throwable t)

Description copied from interface: Log

Log an error with debug log level.

Specified by:

debug in interface Log

Parameters:

message - log this message

t - log this cause

info

public void info(java.lang.Object message)

Description copied from interface: Log

Log a message with info log level.

Specified by:

info in interface Log

Parameters:

message - log this message

info

public void info(java.lang.Object message,
        java.lang.Throwable t)

Description copied from interface: Log

Log an error with info log level.

Specified by:

info in interface Log

Parameters:

message - log this message

t - log this cause

warn

public void warn(java.lang.Object message)

Description copied from interface: Log

Log a message with warn log level.

Specified by:

warn in interface Log

Parameters:

message - log this message

warn

public void warn(java.lang.Object message,
        java.lang.Throwable t)

Description copied from interface: Log

Log an error with warn log level.

Specified by:

warn in interface Log

Parameters:

message - log this message

t - log this cause

error

public void error(java.lang.Object message)

Description copied from interface: Log

Log a message with error log level.

Specified by:

error in interface Log

Parameters:

message - log this message

error

public void error(java.lang.Object message,
         java.lang.Throwable t)

Description copied from interface: Log

Log an error with error log level.

Specified by:

error in interface Log

Parameters:

message - log this message

t - log this cause

fatal

public void fatal(java.lang.Object message)

Description copied from interface: Log

Log a message with fatal log level.

Specified by:

fatal in interface Log

Parameters:

message - log this message

fatal

public void fatal(java.lang.Object message,
         java.lang.Throwable t)

Description copied from interface: Log

Log an error with fatal log level.

Specified by:

fatal in interface Log

Parameters:

message - log this message

t - log this cause

log

private void log(java.lang.Object level,
       java.lang.Object message,
       java.lang.Throwable t)

isEnabledFor

private boolean isEnabledFor(java.lang.Object level)

displayClassInfo

public static void displayClassInfo(java.lang.Class clazz,
                    java.lang.StringBuffer results)

getClassLoaderURLs

public static java.net.URL[] getClassLoaderURLs(java.lang.ClassLoader cl)

Use reflection to access a URL[] getURLs or URL[] getClasspath method so that non-URLClassLoader class loaders, or class loaders that override getURLs to return null or empty, can provide the true classpath info.