Class LocationInfoFilter

java.lang.Object
org.apache.log4j.spi.Filter
org.apache.log4j.filter.LocationInfoFilter
All Implemented Interfaces:
org.apache.log4j.spi.OptionHandler
public class LocationInfoFilter extends org.apache.log4j.spi.Filter
Location information is usually specified at the appender level - all events associated with an appender either create and parse stack traces or they do not. This is an expensive operation and in some cases not needed for all events associated with an appender. This filter creates event-level location information only if the provided expression evaluates to true. For information on expression syntax, see org.apache.log4j.rule.ExpressionRule

  • Field Details

    • convertInFixToPostFix

      boolean convertInFixToPostFix
      Convert to in-fix to post-fix.

    • expression

      String expression
      Expression.

    • expressionRule

      Rule expressionRule
      Compiled expression.

  • Constructor Details

    • LocationInfoFilter

      public LocationInfoFilter()

  • Method Details

    • activateOptions

      public void activateOptions()
      Specified by:
      activateOptions in interface org.apache.log4j.spi.OptionHandler
      Overrides:
      activateOptions in class org.apache.log4j.spi.Filter

    • setExpression

      public void setExpression(String exp)
      Set expression.
      Parameters:
      exp - expression.

    • getExpression

      public String getExpression()
      Get expression.
      Returns:
      expression.

    • setConvertInFixToPostFix

      public void setConvertInFixToPostFix(boolean newValue)
      Set whether in-fix expressions should be converted to post-fix.
      Parameters:
      newValue - if true, convert/

    • getConvertInFixToPostFix

      public boolean getConvertInFixToPostFix()
      Set whether in-fix expressions should be converted to post-fix.
      Returns:
      if true, expressions are converted.

    • decide

      public int decide(org.apache.log4j.spi.LoggingEvent event)
      If this event does not already contain location information, evaluate the event against the expression. If the expression evaluates to true, force generation of location information by calling getLocationInfo.
      Specified by:
      decide in class org.apache.log4j.spi.Filter
      Parameters:
      event - event
      Returns:
      Filter.NEUTRAL.