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Java Source Code / Java Documentation » Library » apache common Logging » org.apache.commons.logging.impl

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.apache.commons.logging.impl .SimpleLog

All known Subclasses:   org.apache.commons.logging.simple .DecoratedSimpleLog,
SimpleLog
public class SimpleLog implements Log,Serializable(Code)

Simple implementation of Log that sends all enabled log messages, for all defined loggers, to System.err. The following system properties are supported to configure the behavior of this logger:

org.apache.commons.logging.simplelog.defaultlog - Default logging detail level for all instances of SimpleLog. Must be one of ("trace", "debug", "info", "warn", "error", or "fatal"). If not specified, defaults to "info".

org.apache.commons.logging.simplelog.log.xxxxx - Logging detail level for a SimpleLog instance named "xxxxx". Must be one of ("trace", "debug", "info", "warn", "error", or "fatal"). If not specified, the default logging detail level is used.

org.apache.commons.logging.simplelog.showlogname - Set to true if you want the Log instance name to be included in output messages. Defaults to false.

org.apache.commons.logging.simplelog.showShortLogname - Set to true if you want the last component of the name to be included in output messages. Defaults to true.

org.apache.commons.logging.simplelog.showdatetime - Set to true if you want the current date and time to be included in output messages. Default is false.

org.apache.commons.logging.simplelog.dateTimeFormat - The date and time format to be used in the output messages. The pattern describing the date and time format is the same that is used in java.text.SimpleDateFormat. If the format is not specified or is invalid, the default format is used. The default format is yyyy/MM/dd HH:mm:ss:SSS zzz.

In addition to looking for system properties with the names specified above, this implementation also checks for a class loader resource named "simplelog.properties", and includes any matching definitions from this resource (if it exists).

author:
   Scott Sanders
author:
   Rod Waldhoff
author:
   Robert Burrell Donkin
version:
   $Id: SimpleLog.java 399221 2006-05-03 09:20:24Z dennisl $

Field Summary
final protected static String DEFAULT_DATE_TIME_FORMAT

final public static int LOG_LEVEL_ALL

final public static int LOG_LEVEL_DEBUG
     "Debug" level logging.
final public static int LOG_LEVEL_ERROR
     "Error" level logging.
final public static int LOG_LEVEL_FATAL
     "Fatal" level logging.
final public static int LOG_LEVEL_INFO
     "Info" level logging.
final public static int LOG_LEVEL_OFF

final public static int LOG_LEVEL_TRACE
     "Trace" level logging.
final public static int LOG_LEVEL_WARN
     "Warn" level logging.
protected int currentLogLevel

protected static DateFormat dateFormatter

protected static String dateTimeFormat

protected String logName

protected static boolean showDateTime

protected static boolean showLogName

protected static boolean showShortName
     Include the short name ( last component ) of the logger in the log message.
final protected static Properties simpleLogProps

final protected static String systemPrefix


Constructor Summary
public SimpleLog(String name)
     Construct a simple log with given name.

Method Summary
final public void debug(Object message)
     Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_DEBUG.
final public void debug(Object message, Throwable t)
     Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_DEBUG.
final public void error(Object message)
     Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_ERROR.
final public void error(Object message, Throwable t)
     Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_ERROR.
final public void fatal(Object message)
     Log a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_FATAL.
final public void fatal(Object message, Throwable t)
     Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_FATAL.
public int getLevel()

Get logging level.
final public void info(Object message)
     Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_INFO.
final public void info(Object message, Throwable t)
     Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_INFO.
final public boolean isDebugEnabled()

Are debug messages currently enabled?

This allows expensive operations such as String concatenation to be avoided when the message will be ignored by the logger.
final public boolean isErrorEnabled()

Are error messages currently enabled?

This allows expensive operations such as String concatenation to be avoided when the message will be ignored by the logger.
final public boolean isFatalEnabled()

Are fatal messages currently enabled?

This allows expensive operations such as String concatenation to be avoided when the message will be ignored by the logger.
final public boolean isInfoEnabled()

Are info messages currently enabled?

This allows expensive operations such as String concatenation to be avoided when the message will be ignored by the logger.
protected boolean isLevelEnabled(int logLevel)

final public boolean isTraceEnabled()

Are trace messages currently enabled?

This allows expensive operations such as String concatenation to be avoided when the message will be ignored by the logger.
final public boolean isWarnEnabled()

Are warn messages currently enabled?

This allows expensive operations such as String concatenation to be avoided when the message will be ignored by the logger.
protected void log(int type, Object message, Throwable t)

Do the actual logging.
public void setLevel(int currentLogLevel)

Set logging level.
final public void trace(Object message)
     Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_TRACE.
final public void trace(Object message, Throwable t)
     Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_TRACE.
final public void warn(Object message)
     Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_WARN.
final public void warn(Object message, Throwable t)
     Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_WARN.
protected void write(StringBuffer buffer)

Write the content of the message accumulated in the specified StringBuffer to the appropriate output destination.

Field Detail
DEFAULT_DATE_TIME_FORMAT
final protected static String DEFAULT_DATE_TIME_FORMAT(Code)
The default format to use when formating dates

LOG_LEVEL_ALL
final public static int LOG_LEVEL_ALL(Code)
Enable all logging levels

LOG_LEVEL_DEBUG
final public static int LOG_LEVEL_DEBUG(Code)
"Debug" level logging.

LOG_LEVEL_ERROR
final public static int LOG_LEVEL_ERROR(Code)
"Error" level logging.

LOG_LEVEL_FATAL
final public static int LOG_LEVEL_FATAL(Code)
"Fatal" level logging.

LOG_LEVEL_INFO
final public static int LOG_LEVEL_INFO(Code)
"Info" level logging.

LOG_LEVEL_OFF
final public static int LOG_LEVEL_OFF(Code)
Enable no logging levels

LOG_LEVEL_TRACE
final public static int LOG_LEVEL_TRACE(Code)
"Trace" level logging.

LOG_LEVEL_WARN
final public static int LOG_LEVEL_WARN(Code)
"Warn" level logging.

currentLogLevel
protected int currentLogLevel(Code)
The current log level

dateFormatter
protected static DateFormat dateFormatter(Code)
Used to format times

dateTimeFormat
protected static String dateTimeFormat(Code)
The date and time format to use in the log message

logName
protected String logName(Code)
The name of this simple log instance

showDateTime
protected static boolean showDateTime(Code)
Include the current time in the log message

showLogName
protected static boolean showLogName(Code)
Include the instance name in the log message?

showShortName
protected static boolean showShortName(Code)
Include the short name ( last component ) of the logger in the log message. Defaults to true - otherwise we'll be lost in a flood of messages without knowing who sends them.

simpleLogProps
final protected static Properties simpleLogProps(Code)
Properties loaded from simplelog.properties

systemPrefix
final protected static String systemPrefix(Code)
All system properties used by SimpleLog start with this

Constructor Detail
SimpleLog
public SimpleLog(String name)(Code)
Construct a simple log with given name.
Parameters:
  name - log name

Method Detail
debug
final public void debug(Object message)(Code)
Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_DEBUG.
Parameters:
  message - to log
See Also:   org.apache.commons.logging.Log.debug(Object)

debug
final public void debug(Object message, Throwable t)(Code)
Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_DEBUG.
Parameters:
  message - to log
Parameters:
  t - log this cause
See Also:   org.apache.commons.logging.Log.debug(ObjectThrowable)

error
final public void error(Object message)(Code)
Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_ERROR.
Parameters:
  message - to log
See Also:   org.apache.commons.logging.Log.error(Object)

error
final public void error(Object message, Throwable t)(Code)
Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_ERROR.
Parameters:
  message - to log
Parameters:
  t - log this cause
See Also:   org.apache.commons.logging.Log.error(ObjectThrowable)

fatal
final public void fatal(Object message)(Code)
Log a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_FATAL.
Parameters:
  message - to log
See Also:   org.apache.commons.logging.Log.fatal(Object)

fatal
final public void fatal(Object message, Throwable t)(Code)
Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_FATAL.
Parameters:
  message - to log
Parameters:
  t - log this cause
See Also:   org.apache.commons.logging.Log.fatal(ObjectThrowable)

getLevel
public int getLevel()(Code)

Get logging level.

info
final public void info(Object message)(Code)
Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_INFO.
Parameters:
  message - to log
See Also:   org.apache.commons.logging.Log.info(Object)

info
final public void info(Object message, Throwable t)(Code)
Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_INFO.
Parameters:
  message - to log
Parameters:
  t - log this cause
See Also:   org.apache.commons.logging.Log.info(ObjectThrowable)

isDebugEnabled
final public boolean isDebugEnabled()(Code)

Are debug messages currently enabled?

This allows expensive operations such as String concatenation to be avoided when the message will be ignored by the logger.

isErrorEnabled
final public boolean isErrorEnabled()(Code)

Are error messages currently enabled?

This allows expensive operations such as String concatenation to be avoided when the message will be ignored by the logger.

isFatalEnabled
final public boolean isFatalEnabled()(Code)

Are fatal messages currently enabled?

This allows expensive operations such as String concatenation to be avoided when the message will be ignored by the logger.

isInfoEnabled
final public boolean isInfoEnabled()(Code)

Are info messages currently enabled?

This allows expensive operations such as String concatenation to be avoided when the message will be ignored by the logger.

isLevelEnabled
protected boolean isLevelEnabled(int logLevel)(Code)
Is the given log level currently enabled?
Parameters:
  logLevel - is this level enabled?

isTraceEnabled
final public boolean isTraceEnabled()(Code)

Are trace messages currently enabled?

This allows expensive operations such as String concatenation to be avoided when the message will be ignored by the logger.

isWarnEnabled
final public boolean isWarnEnabled()(Code)

Are warn messages currently enabled?

This allows expensive operations such as String concatenation to be avoided when the message will be ignored by the logger.

log
protected void log(int type, Object message, Throwable t)(Code)

Do the actual logging. This method assembles the message and then calls write() to cause it to be written.

Parameters:
  type - One of the LOG_LEVEL_XXX constants defining the log level
Parameters:
  message - The message itself (typically a String)
Parameters:
  t - The exception whose stack trace should be logged

setLevel
public void setLevel(int currentLogLevel)(Code)

Set logging level.

Parameters:
  currentLogLevel - new logging level

trace
final public void trace(Object message)(Code)
Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_TRACE.
Parameters:
  message - to log
See Also:   org.apache.commons.logging.Log.trace(Object)

trace
final public void trace(Object message, Throwable t)(Code)
Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_TRACE.
Parameters:
  message - to log
Parameters:
  t - log this cause
See Also:   org.apache.commons.logging.Log.trace(ObjectThrowable)

warn
final public void warn(Object message)(Code)
Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_WARN.
Parameters:
  message - to log
See Also:   org.apache.commons.logging.Log.warn(Object)

warn
final public void warn(Object message, Throwable t)(Code)
Logs a message with org.apache.commons.logging.impl.SimpleLog.LOG_LEVEL_WARN.
Parameters:
  message - to log
Parameters:
  t - log this cause
See Also:   org.apache.commons.logging.Log.warn(ObjectThrowable)

write
protected void write(StringBuffer buffer)(Code)

Write the content of the message accumulated in the specified StringBuffer to the appropriate output destination. The default implementation writes to System.err.

Parameters:
  buffer - A StringBuffer containing the accumulatedtext to be logged

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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