org.egothor.query.runner.enhanced
Class NotRunner

java.lang.Object
  org.egothor.core.query.Runner
      org.egothor.query.runner.NotRunner
          org.egothor.query.runner.enhanced.NotRunner

public class NotRunner
extends NotRunner

This object represents a binary form of a NOT b formula. This Runner is used when the user wished to exclude a term from documents returned as hits. For example, the user might wish to find documents where the search terms BASS but NOT GUITAR are used. The form of this query would be given as:

BASS -GUITAR.

Author:

Leo Galambos

Field Summary

Fields inherited from class org.egothor.query.runner.NotRunner

a, b

Constructor Summary

NotRunner(int model, Runner a, Runner b)
Constructor for the NotRunner object.

Method Summary

int	evaluate(long uid) Return the calculated similarity.

Methods inherited from class org.egothor.query.runner.NotRunner

invalidReason, terms

Methods inherited from class org.egothor.core.query.Runner

run

Methods inherited from class java.lang.Object

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

Constructor Detail

NotRunner

public NotRunner(int model,
                 Runner a,
                 Runner b)

Constructor for the NotRunner object.

Parameters:

model - Description of the Parameter

a - the Runner for the first term

b - the Runner for the second term

Method Detail

evaluate

public int evaluate(long uid)

Return the calculated similarity. Returns 0 when the first argument of formula is not positive or the second one is positive.

Overrides:

evaluate in class NotRunner

Parameters:

uid - the document searched

Returns:

the similarity