[htdig3-dev] Perl interface

loic@ceic.com
Sun, 19 Sep 1999 22:40:30 +0200 (MEST)

Tillman, James writes:
> Is someone already working on a perl interface to htsearch? I and a friend
> of mine are interested in doing the work, but don't want to duplicate anyone
> else's effort.
>
> What we really want is an XS module.
>

 Hi,

 I'm going to do that, in a way. Let me explain.

 In the search/index methods there are a few different levels:

 Data:

 . The word database
 . The document database

 Functions:

 a The word insertion/udpate/delete (indexing)
 b The document parsing
 c The search query parsing (building a query syntax tree)
 d The query resolution (using the syntax tree to match words)
 d The information retrieval (given top N matches for a query
   retrieve the relevant document information)
 e The information display

 I'm currently working hard on 'a' and will provide a perl XS interface
 to it. It will define a set of primitives to access the word database.
 I won't do anything (yet) concerning the document database. The next
 step is to implement 'd'. This requires to define the syntax tree. At
 present c/d are intermixed, which is a very confusing thing. For one thing
 it prevents easy implementation of a new query syntax. Many people would
 love to have AltaVista like syntax :-)

 I plan to release 'a' by Wednesday (including unary tests). Being a
co-author of the Text::Query CPAN module and author of the Text::Query-SQL
CPAN module, I already have a syntax tree structure in mind. My idea is to
be compatible with it in htdig so that Perl interface search have the same
semantic as the htdig C++ search library.

 If you could explain what you have in mind and what you need, we can work
together for the time needed to release the beast :-)

         Cheers, 

-- 
		Loic Dachary

		ECILA
		100 av. du Gal Leclerc
		93500 Pantin - France
		Tel: 33 1 56 96 09 80, Fax: 33 1 56 96 09 61
		e-mail: Loic@Dachary.org URL: http://www.senga.org/

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