On 9/22/06, Sam Giffney <[EMAIL PROTECTED]> wrote:
> I cooked up a little script to show what I mean. This doesn't look right
> to me, but maybe I just completely misunderstand QueryParser.
> Same output on mswin32, unix, ferret 0.9 and 0.10
> Cheers, Sam
>
> require 'rubygems'
> require 'ferret'
> p Ferret::VERSION # 0.10.6
>
> index = Ferret::Index::Index.new()
>
> index << {:title => "Programming Ruby", :content => "yada yada yada"}
> puts index.search("ruby").total_hits # returns 1
>
> query_parser = Ferret::QueryParser.new( :default_field => :title )
> query = query_parser.parse("title:ruby")
> puts index.search(query).total_hits # returns 1
>
> query_parser = Ferret::QueryParser.new( )
> # :default_field: Default: "*"
> # The default field to search when no field is specified in the search
> string.
> query = query_parser.parse("ruby")
> puts index.search(query).total_hits # returns 0
Hi Sam,
The way "*" works is it expands to query to search all fields
specified by the :fields parameter. So you could also try this:
query = query_parser.parse("*:ruby")
puts index.search(query).total_hits # returns 0
Without knowing what fields are available the query parser wouldn't
know how to expand the "*" field specifier. Note that you can print
the query to to see how it was parsed.
require 'rubygems'
require 'ferret'
p Ferret::VERSION # 0.10.6
index = Ferret::Index::Index.new()
index << {:title => "Programming Ruby", :content => "yada yada yada"}
puts index.search("ruby").total_hits # returns 1
query_parser = Ferret::QueryParser.new( :default_field => :title )
query = query_parser.parse("title:ruby")
puts index.search(query).total_hits # returns 1
query_parser = Ferret::QueryParser.new( )
# :default_field: Default: "*"
# The default field to search when no field is specified in the
search string.
query = query_parser.parse("ruby")
puts query.to_s
puts index.search(query).total_hits # returns 0
query_parser = Ferret::QueryParser.new( :fields => [:title, :content])
query = query_parser.parse("ruby")
puts query.to_s
puts index.search(query).total_hits # returns 0
Hope that clears things up for you.
Cheers,
Dave
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