Xapian discuss - Feb 2013 - Sticky results

Hi there,

I have a xapian index whose results are being sorted by a value, with (PHP
bindings):

$enquire->set_sort_by_value($sort_data_value);

This is because I want the results returned in chronological order of
publication date.  However, I now have a need to have certain results be
'sticky' at the top of the resultset, regardless of their publication
date.  Obviously there are hacks such as setting a publication date in the
distant future, but I'm wondering if there is a best practice way to do this
within the Xapian world.

I considered that perhaps the answer was to remove the sort by value and replace
it with a custom posting source that combined that value with the post's
stickiness to give the post a weight.  Would that be the right approach?  If I
do that how do I turn off all the default relevance weight logic?

Cheers,

Andrew

You simple need another value with sticky true-false i think:

Xapian::MultiValueKeyMaker
sorter;sorter.add_value(3);sorter.add_value(1,
true);enquire.set_sort_by_key(&sorter, true);Xapian::MSet mset
enquire.get_mset(0, 10);



Mit freundlichem Gru?
Felix Ostmann

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2013/2/20 Andrew Betts <andrew at trib.tv>
> Hi there,
>
> I have a xapian index whose results are being sorted by a value, with (PHP
> bindings):
>
> $enquire->set_sort_by_value($sort_data_value);
>
> This is because I want the results returned in chronological order of
> publication date.  However, I now have a need to have certain results be
> 'sticky' at the top of the resultset, regardless of their
publication date.
>  Obviously there are hacks such as setting a publication date in the
> distant future, but I'm wondering if there is a best practice way to do
> this within the Xapian world.
>
> I considered that perhaps the answer was to remove the sort by value and
> replace it with a custom posting source that combined that value with the
> post's stickiness to give the post a weight.  Would that be the right
> approach?  If I do that how do I turn off all the default relevance weight
> logic?
>
> Cheers,
>
> Andrew
> _______________________________________________
> Xapian-discuss mailing list
> Xapian-discuss at lists.xapian.org
> http://lists.xapian.org/mailman/listinfo/xapian-discuss
>