org.egothor.query.runner.enhanced
Class PhraseRunner

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

public class PhraseRunner
extends PhraseRunner

The PhraseRunner class is used when a user wishes to make a query involving two terms where the 2^nd term must lie within n words of the 1^st . For example, a user might wish to view documents where BASS lies within 2 words of GUITAR. This query would be given in the form:

(BASS 2 GUITAR) (the parentheses are required).

Author:

Leo Galambos

Field Summary

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

scanner, set

Constructor Summary

PhraseRunner(int model, TermRunner[] a)
Constructor for the PhraseRunner object

Method Summary

int	evaluate(long uid) Return the similarity of this object to the document with the given unique ID.

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

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

PhraseRunner

public PhraseRunner(int model,
                    TermRunner[] a)

Constructor for the PhraseRunner object

Parameters:

model - Description of the Parameter

a - the Runner array

Method Detail

evaluate

public int evaluate(long uid)

Return the similarity of this object to the document with the given unique ID. When any of formula variables returns non-positive value, then the evaluation is 0.

Overrides:

evaluate in class PhraseRunner

Parameters:

uid - the document in question

Returns:

the similarity