Hi, I'm building an application that is going to be making heavy use of all the ferret search options, i.e. boolean, proximity, etc. I was wondering if ferret has a way of providing a full search report, for example, for each document hit give the terms that were found in that document and how many times each was hit.
Thanks!
The Index#explain method is probably what you want;
http://ferret.davebalmain.com/api/classes/Ferret/Index/Index.html#M000038
Although the output may be a bit hard to understand. If you want to create your own reports, here is an example;
require 'rubygems' require 'ferret'
class Ferret::I def report(query, doc_num) return '' unless query = process_query(query) report = '' term_vectors = reader.term_vectors(doc_num) query.terms(searcher).each do |term| term_vector = term_vectors[term.field].terms.select {|tp| tp.text == term.text} count = term_vector.size > 0 ? term_vector.first.positions.size : 0 report << "#{term.field}:#{term.text} - occured #{count} times\n" end report end end
i = Ferret::I.new(:analyzer => Ferret::Analysis::WhiteSpaceAnalyzer.new)
i << { :one => """Hi, I'm building an application that is going to be making heavy use of all the ferret search options, i.e. boolean, proximity, etc. I was wondering if ferret has a way of providing a full search report, for example, for each document hit give the terms that were found in that document and how many times each was hit.""", :two => """Where lipstick is concerned, the important thing is not color, but to accept God's final word on where your lips end. - Jerry Seinfeld""", :three => """The forceps of our minds are clumsy forceps, and crush the truth a little in taking hold of it. - HG Wells""" }
puts "Explain => " puts i.explain('the building all', 0) puts "" puts "Report => " puts i.report('the building all', 0)