Class InequalityRule

  • All Implemented Interfaces:
    java.io.Serializable, Rule

    public class InequalityRule
    extends AbstractRule
    A Rule class implementing inequality evaluation. expects to be able to convert two values to longs. If a specific inequality evaluation class has been provided for the event field, the appropriate rule is returned. (For example, if the expression is Level < DEBUG, a LevelInequalityRule is returned).
    See Also:
    Serialized Form
    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private InequalityRule​(java.lang.String inequalitySymbol, java.lang.String field, java.lang.String value)
      Create new instance.
    • Field Detail

      • field

        private final java.lang.String field
        Field name.
      • value

        private final java.lang.String value
        Comparison value.
      • inequalitySymbol

        private final java.lang.String inequalitySymbol
        Inequality symbol.
    • Constructor Detail

      • InequalityRule

        private InequalityRule​(java.lang.String inequalitySymbol,
                               java.lang.String field,
                               java.lang.String value)
        Create new instance.
        Parameters:
        inequalitySymbol - inequality symbol.
        field - field
        value - comparison value.
    • Method Detail

      • getRule

        public static Rule getRule​(java.lang.String inequalitySymbol,
                                   java.util.Stack stack)
        Create new instance from top two elements on stack.
        Parameters:
        inequalitySymbol - inequality symbol.
        stack - stack.
        Returns:
        rule.
      • getRule

        public static Rule getRule​(java.lang.String inequalitySymbol,
                                   java.lang.String field,
                                   java.lang.String value)
        Create new instance from top two elements on stack.
        Parameters:
        inequalitySymbol - inequality symbol.
        field - field.
        value - comparison value.
        Returns:
        rule.
      • evaluate

        public boolean evaluate​(org.apache.log4j.spi.LoggingEvent event,
                                java.util.Map matches)
        Returns true if this implementation of the rule accepts the LoggingEvent, or false if not.

        What True/False means can be client-specific.

        Parameters:
        event - LoggingEvent this instance will evaluate
        matches - a Map of event field keys to Sets of matching strings (may be null) which will be updated during execution of this method to include field and string matches based on the rule evaluation results
        Returns:
        true if this Rule instance accepts the event, otherwise false.