Ferret talk - Mar 2006 - indexing a document object fails

Hi,

I''m trying out the example (more or less) straight from the tutorial:

    doc = Document.new
    doc << Field.new("id",    "a",   
Field::Store::NO,
Field::Index::UNTOKENIZED)
    doc << Field.new("title", "b", Field::Store::YES,
Field::Index::UNTOKENIZED)
    doc << Field.new("data",  "c",  Field::Store::YES,
Field::Index::TOKENIZED)
    doc << Field.new("image", "d", Field::Store::YES,
Field::Index::NO)
    index << doc

And I get:

Exception: Unknown document type Ferret::Document::Document
C:/dev/workspace/fred/config/../vendor/ferret/index/index.rb:259:in
`<<''
C:/dev/workspace/fred/config/../vendor/ferret/index/index.rb:238:in
`synchronize''
C:/dev/workspace/fred/config/../vendor/ferret/index/index.rb:238:in
`<<''
C:\dev\workspace\fred/test/unit/user_test.rb:56:in
`test_index_document_sanity_check''

Which appears to be caused because

elsif doc.is_a?(Document)

is expecting a Ferret::Document rather than
Ferret::Document::Document.  When I change this line to

elsif doc.is_a?(Document::Document)

I get past the indexing part, and am able to retrieve the document...i.e.

index.search_each("*") do |score_doc, score|
  p index.doc(score_doc)
end

which results in
#<Ferret::Document::Document:0x34d0570
@fields={"title"=>[#<Ferret::Document::Field:0x34cfe80
@tokenized=false, @stored=true, @name="title", @data="b",
@store_offset=false, @store_term_vector=false, @binary=false,
@boost=1.0, @indexed=true, @omit_norms=false, @store_position=false,
@compressed=false>],
"image"=>[#<Ferret::Document::Field:0x34cfc88
@tokenized=false, @stored=true, @name="image", @data="d",
@store_offset=false, @store_term_vector=false, @binary=false,
@boost=1.0, @indexed=false, @omit_norms=false, @store_position=false,
@compressed=false>],
"data"=>[#<Ferret::Document::Field:0x34cfbc8
@tokenized=true, @stored=true, @name="data", @data="c",
@store_offset=false, @store_term_vector=false, @binary=false,
@boost=1.0, @indexed=true, @omit_norms=false, @store_position=false,
@compressed=false>]}, @boost=1.0>




Also, what''s the significance of score_doc?  It appears to be just the
doc id.  Am I missing something?

Thanks,
Steve

On 3/9/06, Steve Conover <sconover at gmail.com>
wrote:
> Hi,
>
> I''m trying out the example (more or less) straight from the
tutorial:
>
>     doc = Document.new
>     doc << Field.new("id",    "a",   
Field::Store::NO,
> Field::Index::UNTOKENIZED)
>     doc << Field.new("title", "b",
Field::Store::YES, Field::Index::UNTOKENIZED)
>     doc << Field.new("data",  "c", 
Field::Store::YES, Field::Index::TOKENIZED)
>     doc << Field.new("image", "d",
Field::Store::YES, Field::Index::NO)
>     index << doc
>
> And I get:
>
> Exception: Unknown document type Ferret::Document::Document
> C:/dev/workspace/fred/config/../vendor/ferret/index/index.rb:259:in
`<<''
> C:/dev/workspace/fred/config/../vendor/ferret/index/index.rb:238:in
> `synchronize''
> C:/dev/workspace/fred/config/../vendor/ferret/index/index.rb:238:in
`<<''
> C:\dev\workspace\fred/test/unit/user_test.rb:56:in
> `test_index_document_sanity_check''
>
> Which appears to be caused because
>
> elsif doc.is_a?(Document)
>
> is expecting a Ferret::Document rather than
> Ferret::Document::Document.  When I change this line to
>
> elsif doc.is_a?(Document::Document)
Funny, I can''t duplicate this but I''ll change it anyway as it
won''t hurt.
> Also, what''s the significance of score_doc?  It appears to be just
the
> doc id.  Am I missing something?
No, you''re not missing anything. It''s just the document id.
Just to be
clear, this is the internal id used by ferret to access the document,
not any id that you add to the document yourself.
>
> Thanks,
> Steve
>
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