This doesn't work because "10" is used.
> puts index.process_query('data:yes AND num:[10 100]')
> puts index.search('data:yes AND num:[10 100]')
One must pad the integer with zero's just like the analyzer:
puts index.process_query('data:yes AND num:[00010 00100]')
puts index.search('data:yes AND num:[00010 00100]')
To use this in a Rails app:
include the IntegerAnalyzer defnition in a file.
then require the file in your model.
inside your model class:
include Ferret::Analysis
analyzer = PerFieldAnalyzer.new(StandardAnalyzer.new)
analyzer[:num] = IntegerAnalyzer.new(5)
analyzer[:blah_field] = IntegerAnalyzer.new(5)
acts_as_ferret(
{:fields => [:blah_field] }
, {:analyzer => analyzer}
David Balmain wrote:
> On 9/13/06, Tom Beddard <[EMAIL PROTECTED]> wrote:
>> integer (so no .00 to cause confusion) I'm getting results in the 50
>> value range as well as 500 if I set the min price as 500. I presume
>> ferret is doing the price as a string comparison, but is there any way
>> to make it do a numeric match?
>>
>> Thanks
>
> Hi Tom,
>
> You need to pad all numbers to a fixed width when adding them to the
> index as well as when querying the index. Usually you'd write the code
> to do this yourself. I've recently come up with another way to do
> this.
>
> require 'ferret'
>
> module Ferret::Analysis
> class IntegerTokenizer
> def initialize(num, width)
> @num = num.to_i
> @width = width
> @done = false
> end
> def next
> if @done
> return nil
> else
> @done = true
> puts Token.new("[EMAIL PROTECTED]" % @num, 0, @width)
> return Token.new("[EMAIL PROTECTED]" % @num, 0, @width)
> end
> end
> def text=(text)
> @num = text.to_i
> @done = false
> end
> end
>
> class IntegerAnalyzer
> def initialize(width)
> @width = width
> end
> def token_stream(field, input)
> return IntegerTokenizer.new(input, @width)
> end
> end
> end
>
> include Ferret::Analysis
> analyzer = PerFieldAnalyzer.new(StandardAnalyzer.new)
> analyzer[:num] = IntegerAnalyzer.new(5)
>
> index = Ferret::Index::Index.new(:analyzer => analyzer)
> docs = [
> {:num => 1, :data => "yes"},
> {:num => 1, :data => "no"},
> {:num => 10, :data => "yes"},
> {:num => 10, :data => "no"},
> {:num => 100, :data => "yes"},
> {:num => 100, :data => "no"},
> {:num => 1000, :data => "yes"},
> {:num => 1000, :data => "no"}
> ]
>
> docs.each { |d| index << d }
>
> puts index.process_query('data:yes AND num:[10 100]')
> puts index.search('data:yes AND num:[10 100]')
>
> This will only work with the working copy of Ferret from the
> subversion repository. I'm still not convinced that this is the best
> way to do it.
>
> Cheers,
> Dave
--
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