[Xapian-discuss] use TermGenerator to get the term

[Ying Liu]

Well, the ESet perl package is not available now.

I am playing around with the perl modules of Document, TermGenerator, 
TermIterator, PositionIterator,  and PostingIterator.  I still have the 
same question. How can I get the term by the term position? I can move 
the index to be begin or end of the term, and I can move the index to 
the next term by alphabetical order and get the term. But how can I 
index the terms of a document and get a term by the term position.  I 
just start with  Xapian, Thank you for your help.


Ying

Ying Liu wrote:
> Hello all,
>
> I have a question about use the TermGenerator alone by Perl. Someone 
> asked this question before and his code is in C++. 
> (http://lists.xapian.org/pipermail/xapian-discuss/2008-November/006109.html). 
> My code is in Perl. Can I get the term by the position just by 
> TermGenerator?
>
>    my $analyzer = Search::Xapian::TermGenerator->new;
>    $analyzer->index_text("hello Xapian world");
>    my $curr_position = $analyzer->get_termpos();     
> $analyzer->set_termpos(2);     $curr_position = $analyzer->get_termpos();
>    $analyzer->increase_termpos(1);
>    $curr_position =  $analyzer->get_termpos();
>
> If I set the document and then use $doc to iterate the term list, 
> terms are order  alphabetically. I don't know how to use the positer().
>
> $analyzer->set_document($doc);
> my $termlist_begin = $doc->termlist_begin();
> $termlist_begin++;
> my $term = $termlist_begin->get_document();
>
>
> Btw, if I want to use ESet, how to assign the text, similar method 
> like index_text for ESet?
>
> Thank you,
> Ying
>
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