[sword-devel] CLucene

[Joachim Ansorg]

DM,
thank you for your comments on that topic.

You're right, that updates will break the native CLucene order. But since 
updates are not possible in Sword at the moment using CLucene to sort the 
results should work fine.

I can't think of a situation where updates could be used for a module index, 
though.

Joachim

> Joachim,
>
> I could be wrong, but I'm not sure that CLucene's sort would product
> the right results.
> IIRC, we store the OSIS ids and these are what need to be sorted into
> Biblical Order.
>
> If it were true that the verses (aka lucene documents) were added in
> order then one could use the ordering of the document ids (Java
> Lucene's default sort) to produce the correct order, but if there are
> any out of order adds then that would not work.
>
> Currently the algorithm for building the index will create an index
> with document order equal to canonical order. However, write support
> has not been added to an index yet. That is if the application re-
> writes a verse in the index, the Lucene index is not updated. When
> update support is added to the index, then document order sort
> becomes meaningless.
>
> It is possible to sort on a field, but even then the ordering of OSIS
> ids would not return the right results. We want Gen to sort earlier
> than Exo.
>
> DM
>
> On Aug 13, 2006, at 7:04 PM, Joachim Ansorg wrote:
> > The current clucenen has support for the native order, it just
> > needs to be
> > patched into sword.
> >
> > Joachim
> >
> >> The ListKey container which is returned from SWModule::search has a
> >> newly added .sort() method.
> >>
> >> Eeli Kaikkonen wrote:
> >>> On Sun, 6 Aug 2006, Eeli Kaikkonen wrote:
> >>>> I tried to compile Sword for some time ago on Debian unstable.
> >>>> CLucene
> >>>> had some problem then. Now I tried again (after upgrading
> >>>> Debian) and
> >>>> compilation worked for some reason, maybe CLucene had been updated.
> >>>>
> >>>>
> >>>> Now the problem is that I don't know how to use clucene with
> >>>> sword. Any
> >>>> pointers? I just like to test it, preferably with some simple
> >>>> command
> >>>> like tool like diatheke.
> >>>
> >>> I managed to compile BibleTime1.6beta3 with clucene support. I made
> >>> indexes with that and copied them to sword module directories. I
> >>> made
> >>> necessary changes to diatheke and now it supports clucene search.
> >>>
> >>> /work/sword/bin/diatheke -b KJV -s lucene  -k "what*"
> >>>
> >>> Verses containing "what*"-- I Samuel 20:4 ; Genesis 2:19 ; Romans
> >>> 2:29
> >>> ; [...] Revelation of John 3:3 -- 1036 matches total (KJV)
> >>>
> >>> It took about 2 seconds when the index was in physical memory disk
> >>> cache. Great. Downside is that returned verse keys are not
> >>> alpabetically
> >>> arranged.
> >>>
> >>>   Yours,
> >>> 	Eeli Kaikkonen (Mr.), Oulu, Finland
> >>> 	e-mail: eekaikko at mailx.studentx.oulux.fix (with no x)
> >>>
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