Package org.apache.commons.logging.impl

Class Log4JLogger

  • All Implemented Interfaces:
    java.io.Serializable, Log
    public class Log4JLogger
extends java.lang.Object
implements Log, java.io.Serializable
    Implementation of Log that maps directly to a Logger for log4J version 1.2.

    Initial configuration of the corresponding Logger instances should be done in the usual manner, as outlined in the Log4J documentation.

    The reason this logger is distinct from the 1.3 logger is that in version 1.2 of Log4J:

    • class Logger takes Priority parameters not Level parameters.
    • class Level extends Priority
    Log4J1.3 is expected to change Level so it no longer extends Priority, which is a non-binary-compatible change. The class generated by compiling this code against log4j 1.2 will therefore not run against log4j 1.3.
    Version:
    $Id: Log4JLogger.java 1448119 2013-02-20 12:28:04Z tn $
    See Also:
    Serialized Form

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private static java.lang.String FQCN
      The fully qualified name of the Log4JLogger class.
      private org.apache.log4j.Logger logger
      Log to this logger
      private java.lang.String name
      Logger name
      private static long serialVersionUID
      Serializable version identifier.
      private static org.apache.log4j.Priority traceLevel  

    • Constructor Summary

      Constructors 
      Constructor Description
      Log4JLogger()  
      Log4JLogger​(java.lang.String name)
      Base constructor.
      Log4JLogger​(org.apache.log4j.Logger logger)
      For use with a log4j factory.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void debug​(java.lang.Object message)
      Logs a message with org.apache.log4j.Priority.DEBUG.
      void debug​(java.lang.Object message, java.lang.Throwable t)
      Logs a message with org.apache.log4j.Priority.DEBUG.
      void error​(java.lang.Object message)
      Logs a message with org.apache.log4j.Priority.ERROR.
      void error​(java.lang.Object message, java.lang.Throwable t)
      Logs a message with org.apache.log4j.Priority.ERROR.
      void fatal​(java.lang.Object message)
      Logs a message with org.apache.log4j.Priority.FATAL.
      void fatal​(java.lang.Object message, java.lang.Throwable t)
      Logs a message with org.apache.log4j.Priority.FATAL.
      org.apache.log4j.Logger getLogger()
      Return the native Logger instance we are using.
      void info​(java.lang.Object message)
      Logs a message with org.apache.log4j.Priority.INFO.
      void info​(java.lang.Object message, java.lang.Throwable t)
      Logs a message with org.apache.log4j.Priority.INFO.
      boolean isDebugEnabled()
      Check whether the Log4j Logger used is enabled for DEBUG priority.
      boolean isErrorEnabled()
      Check whether the Log4j Logger used is enabled for ERROR priority.
      boolean isFatalEnabled()
      Check whether the Log4j Logger used is enabled for FATAL priority.
      boolean isInfoEnabled()
      Check whether the Log4j Logger used is enabled for INFO priority.
      boolean isTraceEnabled()
      Check whether the Log4j Logger used is enabled for TRACE priority.
      boolean isWarnEnabled()
      Check whether the Log4j Logger used is enabled for WARN priority.
      void trace​(java.lang.Object message)
      Logs a message with org.apache.log4j.Priority.TRACE.
      void trace​(java.lang.Object message, java.lang.Throwable t)
      Logs a message with org.apache.log4j.Priority.TRACE.
      void warn​(java.lang.Object message)
      Logs a message with org.apache.log4j.Priority.WARN.
      void warn​(java.lang.Object message, java.lang.Throwable t)
      Logs a message with org.apache.log4j.Priority.WARN.

      • 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
        Serializable version identifier.
        See Also:
        Constant Field Values

      • FQCN

        private static final java.lang.String FQCN
        The fully qualified name of the Log4JLogger class.

      • logger

        private transient volatile org.apache.log4j.Logger logger
        Log to this logger

      • name

        private final java.lang.String name
        Logger name

      • traceLevel

        private static final org.apache.log4j.Priority traceLevel

    • Constructor Detail

      • Log4JLogger

        public Log4JLogger()

      • Log4JLogger

        public Log4JLogger​(java.lang.String name)
        Base constructor.

      • Log4JLogger

        public Log4JLogger​(org.apache.log4j.Logger logger)
        For use with a log4j factory.

    • Method Detail

      • trace

        public void trace​(java.lang.Object message)
        Logs a message with org.apache.log4j.Priority.TRACE. When using a log4j version that does not support the TRACE level, the message will be logged at the DEBUG level.
        Specified by:
        trace in interface Log
        Parameters:
        message - to log
        See Also:
        Log.trace(Object)

      • trace

        public void trace​(java.lang.Object message,
                  java.lang.Throwable t)
        Logs a message with org.apache.log4j.Priority.TRACE. When using a log4j version that does not support the TRACE level, the message will be logged at the DEBUG level.
        Specified by:
        trace in interface Log
        Parameters:
        message - to log
        t - log this cause
        See Also:
        Log.trace(Object, Throwable)

      • debug

        public void debug​(java.lang.Object message)
        Logs a message with org.apache.log4j.Priority.DEBUG.
        Specified by:
        debug in interface Log
        Parameters:
        message - to log
        See Also:
        Log.debug(Object)

      • debug

        public void debug​(java.lang.Object message,
                  java.lang.Throwable t)
        Logs a message with org.apache.log4j.Priority.DEBUG.
        Specified by:
        debug in interface Log
        Parameters:
        message - to log
        t - log this cause
        See Also:
        Log.debug(Object, Throwable)

      • info

        public void info​(java.lang.Object message)
        Logs a message with org.apache.log4j.Priority.INFO.
        Specified by:
        info in interface Log
        Parameters:
        message - to log
        See Also:
        Log.info(Object)

      • info

        public void info​(java.lang.Object message,
                 java.lang.Throwable t)
        Logs a message with org.apache.log4j.Priority.INFO.
        Specified by:
        info in interface Log
        Parameters:
        message - to log
        t - log this cause
        See Also:
        Log.info(Object, Throwable)

      • warn

        public void warn​(java.lang.Object message)
        Logs a message with org.apache.log4j.Priority.WARN.
        Specified by:
        warn in interface Log
        Parameters:
        message - to log
        See Also:
        Log.warn(Object)

      • warn

        public void warn​(java.lang.Object message,
                 java.lang.Throwable t)
        Logs a message with org.apache.log4j.Priority.WARN.
        Specified by:
        warn in interface Log
        Parameters:
        message - to log
        t - log this cause
        See Also:
        Log.warn(Object, Throwable)

      • error

        public void error​(java.lang.Object message)
        Logs a message with org.apache.log4j.Priority.ERROR.
        Specified by:
        error in interface Log
        Parameters:
        message - to log
        See Also:
        Log.error(Object)

      • error

        public void error​(java.lang.Object message,
                  java.lang.Throwable t)
        Logs a message with org.apache.log4j.Priority.ERROR.
        Specified by:
        error in interface Log
        Parameters:
        message - to log
        t - log this cause
        See Also:
        Log.error(Object, Throwable)

      • fatal

        public void fatal​(java.lang.Object message)
        Logs a message with org.apache.log4j.Priority.FATAL.
        Specified by:
        fatal in interface Log
        Parameters:
        message - to log
        See Also:
        Log.fatal(Object)

      • fatal

        public void fatal​(java.lang.Object message,
                  java.lang.Throwable t)
        Logs a message with org.apache.log4j.Priority.FATAL.
        Specified by:
        fatal in interface Log
        Parameters:
        message - to log
        t - log this cause
        See Also:
        Log.fatal(Object, Throwable)

      • getLogger

        public org.apache.log4j.Logger getLogger()
        Return the native Logger instance we are using.

      • isDebugEnabled

        public boolean isDebugEnabled()
        Check whether the Log4j Logger used is enabled for DEBUG priority.
        Specified by:
        isDebugEnabled in interface Log
        Returns:
        true if debug is enabled in the underlying logger.

      • isErrorEnabled

        public boolean isErrorEnabled()
        Check whether the Log4j Logger used is enabled for ERROR priority.
        Specified by:
        isErrorEnabled in interface Log
        Returns:
        true if error is enabled in the underlying logger.

      • isFatalEnabled

        public boolean isFatalEnabled()
        Check whether the Log4j Logger used is enabled for FATAL priority.
        Specified by:
        isFatalEnabled in interface Log
        Returns:
        true if fatal is enabled in the underlying logger.

      • isInfoEnabled

        public boolean isInfoEnabled()
        Check whether the Log4j Logger used is enabled for INFO priority.
        Specified by:
        isInfoEnabled in interface Log
        Returns:
        true if info is enabled in the underlying logger.

      • isTraceEnabled

        public boolean isTraceEnabled()
        Check whether the Log4j Logger used is enabled for TRACE priority. When using a log4j version that does not support the TRACE level, this call will report whether DEBUG is enabled or not.
        Specified by:
        isTraceEnabled in interface Log
        Returns:
        true if trace is enabled in the underlying logger.

      • isWarnEnabled

        public boolean isWarnEnabled()
        Check whether the Log4j Logger used is enabled for WARN priority.
        Specified by:
        isWarnEnabled in interface Log
        Returns:
        true if warn is enabled in the underlying logger.