Class LevelRangeFilter

java.lang.Object
org.apache.log4j.spi.Filter
org.apache.log4j.filter.LevelRangeFilter
All Implemented Interfaces:
org.apache.log4j.spi.OptionHandler
public class LevelRangeFilter extends org.apache.log4j.spi.Filter
This is a very simple filter based on level matching, which can be used to reject messages with priorities outside a certain range.

The filter admits three options LevelMin, LevelMax and AcceptOnMatch.

If the level of the LoggingEvent is not between Min and Max (inclusive), then Filter.DENY is returned.

If the Logging event level is within the specified range, then if AcceptOnMatch is true, Filter.ACCEPT is returned, and if AcceptOnMatch is false, Filter.NEUTRAL is returned.

If LevelMin is not defined, then there is no minimum acceptable level (ie a level is never rejected for being too "low"/unimportant). If LevelMax is not defined, then there is no maximum acceptable level (ie a level is never rejected for beeing too "high"/important).

Refer to the setThreshold method available to all appenders extending AppenderSkeleton for a more convenient way to filter out events by level.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    (package private) boolean
    acceptOnMatch
    Do we return ACCEPT when a match occurs.
    (package private) org.apache.log4j.Level
    levelMax
     
    (package private) org.apache.log4j.Level
    levelMin
     

    Fields inherited from class org.apache.log4j.spi.Filter

    ACCEPT, DENY, NEUTRAL, next

  • Constructor Summary

    Constructors
    Constructor
    Description
    LevelRangeFilter()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    decide(org.apache.log4j.spi.LoggingEvent event)
    Return the decision of this filter.
    boolean
    getAcceptOnMatch()
    Get the value of the AcceptOnMatch option.
    org.apache.log4j.Level
    getLevelMax()
    Get the value of the LevelMax option.
    org.apache.log4j.Level
    getLevelMin()
    Get the value of the LevelMin option.
    void
    setAcceptOnMatch(boolean acceptOnMatch)
    Set the AcceptOnMatch option.
    void
    setLevelMax(org.apache.log4j.Level levelMax)
    Set the LevelMax option.
    void
    setLevelMin(org.apache.log4j.Level levelMin)
    Set the LevelMin option.

    Methods inherited from class org.apache.log4j.spi.Filter

    activateOptions, getNext, setNext

    Methods inherited from class Object

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

  • Field Details

    • acceptOnMatch

      boolean acceptOnMatch
      Do we return ACCEPT when a match occurs. Default is false, so that later filters get run by default

    • levelMin

      org.apache.log4j.Level levelMin

    • levelMax

      org.apache.log4j.Level levelMax

  • Constructor Details

    • LevelRangeFilter

      public LevelRangeFilter()

  • Method Details

    • decide

      public int decide(org.apache.log4j.spi.LoggingEvent event)
      Return the decision of this filter.
      Specified by:
      decide in class org.apache.log4j.spi.Filter

    • getLevelMax

      public org.apache.log4j.Level getLevelMax()
      Get the value of the LevelMax option.

    • getLevelMin

      public org.apache.log4j.Level getLevelMin()
      Get the value of the LevelMin option.

    • getAcceptOnMatch

      public boolean getAcceptOnMatch()
      Get the value of the AcceptOnMatch option.

    • setLevelMax

      public void setLevelMax(org.apache.log4j.Level levelMax)
      Set the LevelMax option.

    • setLevelMin

      public void setLevelMin(org.apache.log4j.Level levelMin)
      Set the LevelMin option.

    • setAcceptOnMatch

      public void setAcceptOnMatch(boolean acceptOnMatch)
      Set the AcceptOnMatch option.