Ferret talk - Apr 2006 - Sorting Search results

I tried sorting the search results in Ferret::Index::Index#search and
what I found was that the sort is applied not to the whole search but to
the returned results. 

Suppose I have these results:

Text - Num

foo - 2
bar - 3
far - 4
boo - 1

If I limit the search to the first two and sort by num I get:

foo - 2
bar - 3

while I think the natural behaviour would be:

boo - 1
foo - 2

Is this intended or a bug?

Greetings,

Pedro.

Thanks Pedro,

This was a bug. It is now fixed.

Regards,
Dave

On 4/21/06, Pedro C?rte-Real <Pedro.CorteReal at iantt.pt>
wrote:
> I tried sorting the search results in Ferret::Index::Index#search and
> what I found was that the sort is applied not to the whole search but to
> the returned results.
>
> Suppose I have these results:
>
> Text - Num
>
> foo - 2
> bar - 3
> far - 4
> boo - 1
>
> If I limit the search to the first two and sort by num I get:
>
> foo - 2
> bar - 3
>
> while I think the natural behaviour would be:
>
> boo - 1
> foo - 2
>
> Is this intended or a bug?
>
> Greetings,
>
> Pedro.
>
> _______________________________________________
> Ferret-talk mailing list
> Ferret-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/ferret-talk
>

On Tue, 2006-04-25 at 22:20 +0900, David Balmain wrote:
> Thanks Pedro,
> 
> This was a bug. It is now fixed.
I think I can still see it in my search results. Are you sure it''s
fixed? I''m using SVN now.

Greetings,

Pedro.

It''s working here;
    require ''ferret''
    include Ferret
    include Ferret::Index
    i = Index.new
    i << {:a => "one", :b => 1}
    i << {:a => "two two", :b => 2}
    i << {:a => "three three three", :b => 3}
    i << {:a => "four", :b => 4}

    i.search_each("one two three four") do |d, s|
      puts "#{s} => #{i[d]}"
    end
    # 0.0612355209887028 => Document {
    #   stored/uncompressed,indexed,tokenized,<b:1>
    #   stored/uncompressed,indexed,tokenized,<a:one>
    # }
    # 0.0612355209887028 => Document {
    #   stored/uncompressed,indexed,tokenized,<b:4>
    #   stored/uncompressed,indexed,tokenized,<a:four>
    # }
    # 0.0541250631213188 => Document {
    #   stored/uncompressed,indexed,tokenized,<b:2>
    #   stored/uncompressed,indexed,tokenized,<a:two two>
    # }
    # 0.0530315153300762 => Document {
    #   stored/uncompressed,indexed,tokenized,<b:3>
    #   stored/uncompressed,indexed,tokenized,<a:three three three>
    # }

    i.search_each("one two three four", :sort => :b) do |d, s|
      puts "#{s} => #{i[d]}"
    end
    # 0.0612355209887028 => Document {
    #   stored/uncompressed,indexed,tokenized,<b:1>
    #   stored/uncompressed,indexed,tokenized,<a:one>
    # }
    # 0.0541250631213188 => Document {
    #   stored/uncompressed,indexed,tokenized,<b:2>
    #   stored/uncompressed,indexed,tokenized,<a:two two>
    # }
    # 0.0530315153300762 => Document {
    #   stored/uncompressed,indexed,tokenized,<b:3>
    #   stored/uncompressed,indexed,tokenized,<a:three three three>
    # }
    # 0.0612355209887028 => Document {
    #   stored/uncompressed,indexed,tokenized,<b:4>
    #   stored/uncompressed,indexed,tokenized,<a:four>
    # }

    i.search_each("one two three four",
                  {:sort => :b, :first_doc => 1, :num_docs => 2}) do
|d, s|
      puts "#{s} => #{i[d]}"
    end
    # 0.0541250631213188 => Document {
    #   stored/uncompressed,indexed,tokenized,<b:2>
    #   stored/uncompressed,indexed,tokenized,<a:two two>
    # }
    # 0.0530315153300762 => Document {
    #   stored/uncompressed,indexed,tokenized,<b:3>
    #   stored/uncompressed,indexed,tokenized,<a:three three three>
    # }



On 5/9/06, Pedro C?rte-Real <Pedro.CorteReal at iantt.pt>
wrote:
> On Tue, 2006-04-25 at 22:20 +0900, David Balmain wrote:
> > Thanks Pedro,
> >
> > This was a bug. It is now fixed.
>
> I think I can still see it in my search results. Are you sure it''s
> fixed? I''m using SVN now.
>
> Greetings,
>
> Pedro.
>
> _______________________________________________
> Ferret-talk mailing list
> Ferret-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/ferret-talk
>