For you it will be easy to understand GiST interface looking into
src/backend/access/gist/gistproc.c. It implements RTree.
fernando esparza wrote:
> Hello,
>
> I'm finishing my career in computer engineering. To finish that I've
> to develop a new implementation of R*-tree. My teacher Prof. Dr.
> Seeger, http://dbs.mathematik.uni-marburg.de/Home/People/Professor has
> already one done, now he wants me to add it to PostgreSQL using Gist.
> Now that gist is the PostgreSQL core it's very dificult for me to know
> from where to start with. Could you please give me some kind of guide?
>
> Thank you. Sincerely yours.
>
> Fernando Esparza
>
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Teodor Sigaev E-mail: teodor@sigaev.ru
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