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  /* 
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   * Copyright (c) 2004-2008 QOS.ch
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   * All rights reserved.
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   * 
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   * Permission is hereby granted, free  of charge, to any person obtaining
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   * a  copy  of this  software  and  associated  documentation files  (the
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   * "Software"), to  deal in  the Software without  restriction, including
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   * without limitation  the rights to  use, copy, modify,  merge, publish,
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   * distribute,  sublicense, and/or sell  copies of  the Software,  and to
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  * permit persons to whom the Software  is furnished to do so, subject to
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  * the following conditions:
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  * 
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  * The  above  copyright  notice  and  this permission  notice  shall  be
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  * included in all copies or substantial portions of the Software.
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  * 
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  * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
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  * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
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  * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
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  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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  * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
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  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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  */
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 package org.slf4j;

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

Author(s):
Ceki Gülcü
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 public interface Logger {


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

Since:
1.3
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   final public String ROOT_LOGGER_NAME = "ROOT";
  
  
Return the name of this Logger instance. 
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   public String getName();

  
Is the logger instance enabled for the TRACE level?

Returns:
True if this Logger is enabled for the TRACE level, false otherwise.
Since:
1.4
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   public boolean isTraceEnabled();
    

  
Log a message at the TRACE level.

Parameters:
msg the message string to be logged
Since:
1.4
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   public void trace(String msg);

  
  
Log a message at the TRACE level according to the specified format and argument.

This form avoids superfluous object creation when the logger is disabled for the TRACE level.

Parameters:
format the format string
arg the argument
Since:
1.4
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   public void trace(String format, Object arg);


   
  
Log a message at the TRACE level according to the specified format and arguments.

This form avoids superfluous object creation when the logger is disabled for the TRACE level.

Parameters:
format the format string
arg1 the first argument
arg2 the second argument
Since:
1.4
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   public void trace(String format, Object arg1, Object arg2);

  
Log a message at the TRACE level according to the specified format and arguments.

This form avoids superfluous object creation when the logger is disabled for the TRACE level.

Parameters:
format the format string
argArray an array of arguments
Since:
1.4
111
  public void trace(String format, Object[] argArray);
  
  
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
Since:
1.4
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122
  public void trace(String msg, Throwable t);
 
  
  
Similar to isTraceEnabled() method except that the marker data is also taken into account.

Parameters:
marker The marker data to take into consideration
Since:
1.4
133
  public boolean isTraceEnabled(Marker marker);
  
  
Log a message with the specific Marker at the TRACE level.

Parameters:
marker the marker data specific to this log statement
msg the message string to be logged
Since:
1.4
143
  public void trace(Marker marker, String msg);
  
  
This method is similar to trace(java.lang.String,java.lang.Object) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
arg the argument
Since:
1.4
155
  public void trace(Marker marker, String format, Object arg);
 
 
  
This method is similar to trace(java.lang.String,java.lang.Object,java.lang.Object) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
arg1 the first argument
arg2 the second argument
Since:
1.4
170
  public void trace(Marker marker, String format, Object arg1, Object arg2);

  
This method is similar to trace(java.lang.String,java.lang.Object[]) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
argArray an array of arguments
Since:
1.4
183
  public void trace(Marker marker, String format, Object[] argArray);

  
  
This method is similar to trace(java.lang.String,java.lang.Throwable) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
msg the message accompanying the exception
t the exception (throwable) to log
Since:
1.4
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  public void trace(Marker marker, String msg, Throwable t);

  
  
Is the logger instance enabled for the DEBUG level?

Returns:
True if this Logger is enabled for the DEBUG level, false otherwise.
205
  public boolean isDebugEnabled();
  
  
  
Log a message at the DEBUG level.

Parameters:
msg the message string to be logged
213
  public void debug(String msg);
  
  
  
Log a message at the DEBUG level according to the specified format and argument.

This form avoids superfluous object creation when the logger is disabled for the DEBUG level.

Parameters:
format the format string
arg the argument
226
  public void debug(String format, Object arg);


  
  
Log a message at the DEBUG level according to the specified format and arguments.

This form avoids superfluous object creation when the logger is disabled for the DEBUG level.

Parameters:
format the format string
arg1 the first argument
arg2 the second argument
241
  public void debug(String format, Object arg1, Object arg2);

  
Log a message at the DEBUG level according to the specified format and arguments.

This form avoids superfluous object creation when the logger is disabled for the DEBUG level.

Parameters:
format the format string
argArray an array of arguments
253
  public void debug(String format, Object[] argArray);
  
  
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
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  public void debug(String msg, Throwable t);
 
  
  
Similar to isDebugEnabled() method except that the marker data is also taken into account.

Parameters:
marker The marker data to take into consideration
271
  public boolean isDebugEnabled(Marker marker);
  
  
Log a message with the specific Marker at the DEBUG level.

Parameters:
marker the marker data specific to this log statement
msg the message string to be logged
279
  public void debug(Marker marker, String msg);
  
  
This method is similar to debug(java.lang.String,java.lang.Object) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
arg the argument
289
  public void debug(Marker marker, String format, Object arg);
 
 
  
This method is similar to debug(java.lang.String,java.lang.Object,java.lang.Object) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
arg1 the first argument
arg2 the second argument
302
  public void debug(Marker marker, String format, Object arg1, Object arg2);

  
This method is similar to debug(java.lang.String,java.lang.Object[]) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
argArray an array of arguments
313
  public void debug(Marker marker, String format, Object[] argArray);

  
  
This method is similar to debug(java.lang.String,java.lang.Throwable) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
msg the message accompanying the exception
t the exception (throwable) to log
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  public void debug(Marker marker, String msg, Throwable t);
  
  
  
Is the logger instance enabled for the INFO level?

Returns:
True if this Logger is enabled for the INFO level, false otherwise.
332
  public boolean isInfoEnabled();

  
  
Log a message at the INFO level.

Parameters:
msg the message string to be logged
340
  public void info(String msg);
  

  
Log a message at the INFO level according to the specified format and argument.

This form avoids superfluous object creation when the logger is disabled for the INFO level.

Parameters:
format the format string
arg the argument
353
  public void info(String format, Object arg);

  
  
Log a message at the INFO level according to the specified format and arguments.

This form avoids superfluous object creation when the logger is disabled for the INFO level.

Parameters:
format the format string
arg1 the first argument
arg2 the second argument
367
  public void info(String format, Object arg1, Object arg2);

  
Log a message at the INFO level according to the specified format and arguments.

This form avoids superfluous object creation when the logger is disabled for the INFO level.

Parameters:
format the format string
argArray an array of arguments
379
  public void info(String format, Object[] argArray);
  
  
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
388
  public void info(String msg, Throwable t);

  
Similar to isInfoEnabled() method except that the marker data is also taken into consideration.

Parameters:
marker The marker data to take into consideration
396
  public boolean isInfoEnabled(Marker marker);
  
  
Log a message with the specific Marker at the INFO level.

Parameters:
marker The marker specific to this log statement
msg the message string to be logged
404
  public void info(Marker marker, String msg);
  
  
This method is similar to info(java.lang.String,java.lang.Object) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
arg the argument
414
  public void info(Marker marker, String format, Object arg);
  
  
This method is similar to info(java.lang.String,java.lang.Object,java.lang.Object) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
arg1 the first argument
arg2 the second argument
426
  public void info(Marker marker, String format, Object arg1, Object arg2);  
  
  
  
This method is similar to info(java.lang.String,java.lang.Object[]) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
argArray an array of arguments
438
  public void info(Marker marker, String format, Object[] argArray);

  
  
This method is similar to info(java.lang.String,java.lang.Throwable) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data for this log statement
msg the message accompanying the exception
t the exception (throwable) to log
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449
  public void info(Marker marker, String msg, Throwable t); 

  
  
Is the logger instance enabled for the WARN level?

Returns:
True if this Logger is enabled for the WARN level, false otherwise.
457
  public boolean isWarnEnabled();

  
Log a message at the WARN level.

Parameters:
msg the message string to be logged
464
  public void warn(String msg);

 
Log a message at the WARN level according to the specified format and argument.

This form avoids superfluous object creation when the logger is disabled for the WARN level.

Parameters:
format the format string
arg the argument
476
  public void warn(String format, Object arg);

  
  
Log a message at the WARN level according to the specified format and arguments.

This form avoids superfluous object creation when the logger is disabled for the WARN level.

Parameters:
format the format string
argArray an array of arguments
489
  public void warn(String format, Object[] argArray);
  
  
Log a message at the WARN level according to the specified format and arguments.

This form avoids superfluous object creation when the logger is disabled for the WARN level.

Parameters:
format the format string
arg1 the first argument
arg2 the second argument
502
  public void warn(String format, Object arg1, Object arg2);
  
  
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
511
  public void warn(String msg, Throwable t);
  

  
Similar to isWarnEnabled() method except that the marker data is also taken into consideration.

Parameters:
marker The marker data to take into consideration
520
  public boolean isWarnEnabled(Marker marker);
 
  
Log a message with the specific Marker at the WARN level.

Parameters:
marker The marker specific to this log statement
msg the message string to be logged
528
  public void warn(Marker marker, String msg); 
  
  
This method is similar to warn(java.lang.String,java.lang.Object) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
arg the argument
538
  public void warn(Marker marker, String format, Object arg);
  
  
This method is similar to warn(java.lang.String,java.lang.Object,java.lang.Object) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
arg1 the first argument
arg2 the second argument
550
  public void warn(Marker marker, String format, Object arg1, Object arg2);  
  
  
This method is similar to warn(java.lang.String,java.lang.Object[]) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
argArray an array of arguments
561
  public void warn(Marker marker, String format, Object[] argArray);

  
  
This method is similar to warn(java.lang.String,java.lang.Throwable) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data for this log statement
msg the message accompanying the exception
t the exception (throwable) to log
571
 
572
  public void warn(Marker marker, String msg, Throwable t); 
  

  
Is the logger instance enabled for the ERROR level?

Returns:
True if this Logger is enabled for the ERROR level, false otherwise.
580
  public boolean isErrorEnabled();
  
  
Log a message at the ERROR level.

Parameters:
msg the message string to be logged
587
  public void error(String msg);
  
 
Log a message at the ERROR level according to the specified format and argument.

This form avoids superfluous object creation when the logger is disabled for the ERROR level.

Parameters:
format the format string
arg the argument
599
  public void error(String format, Object arg);

  
Log a message at the ERROR level according to the specified format and arguments.

This form avoids superfluous object creation when the logger is disabled for the ERROR level.

Parameters:
format the format string
arg1 the first argument
arg2 the second argument
612
  public void error(String format, Object arg1, Object arg2);

  
Log a message at the ERROR level according to the specified format and arguments.

This form avoids superfluous object creation when the logger is disabled for the ERROR level.

Parameters:
format the format string
argArray an array of arguments
624
  public void error(String format, Object[] argArray);
  
  
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
633
  public void error(String msg, Throwable t);


  
Similar to isErrorEnabled() method except that the marker data is also taken into consideration.

Parameters:
marker The marker data to take into consideration
642
  public boolean isErrorEnabled(Marker marker);
  
  
Log a message with the specific Marker at the ERROR level.

Parameters:
marker The marker specific to this log statement
msg the message string to be logged
650
  public void error(Marker marker, String msg); 
  
  
This method is similar to error(java.lang.String,java.lang.Object) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
arg the argument
660
  public void error(Marker marker, String format, Object arg);
  
  
This method is similar to error(java.lang.String,java.lang.Object,java.lang.Object) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
arg1 the first argument
arg2 the second argument
672
  public void error(Marker marker, String format, Object arg1, Object arg2);  
  
  
This method is similar to error(java.lang.String,java.lang.Object[]) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
format the format string
argArray an array of arguments
683
  public void error(Marker marker, String format, Object[] argArray);

  
  
This method is similar to error(java.lang.String,java.lang.Throwable) method except that the marker data is also taken into consideration.

Parameters:
marker the marker data specific to this log statement
msg the message accompanying the exception
t the exception (throwable) to log
694
 
695
  public void error(Marker marker, String msg, Throwable t);
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