Class LikeRule

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

    public class LikeRule
    extends AbstractRule
    A Rule class supporting java.util.regex regular expression syntax.
    See Also:
    Serialized Form
    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private LikeRule​(java.lang.String field, java.util.regex.Pattern pattern)
      Create new instance.
    • Field Detail

      • pattern

        private transient java.util.regex.Pattern pattern
        Pattern.
      • matcher

        private transient java.util.regex.Matcher matcher
        Regular expression matcher.
      • field

        private transient java.lang.String field
        Field.
    • Constructor Detail

      • LikeRule

        private LikeRule​(java.lang.String field,
                         java.util.regex.Pattern pattern)
        Create new instance.
        Parameters:
        field - field
        pattern - pattern
    • Method Detail

      • getRule

        public static Rule getRule​(java.util.Stack stack)
        Create new instance from top two elements of stack.
        Parameters:
        stack - stack
        Returns:
        new instance
      • getRule

        public static Rule getRule​(java.lang.String field,
                                   java.lang.String pattern)
        Create new instance.
        Parameters:
        field - field
        pattern - pattern
        Returns:
        new instance
      • 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.
      • readObject

        private void readObject​(java.io.ObjectInputStream in)
                         throws java.io.IOException,
                                java.lang.ClassNotFoundException
        Deserialize the state of the object.
        Parameters:
        in - object input stream
        Throws:
        java.io.IOException - if IOException during deserialization
        java.lang.ClassNotFoundException - if class not found.
      • writeObject

        private void writeObject​(java.io.ObjectOutputStream out)
                          throws java.io.IOException
        Serialize the state of the object.
        Parameters:
        out - object output stream
        Throws:
        java.io.IOException - if IOException during serialization