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From Fabiano Nunes <fabi...@nunes.me>
Subject Re: Retrieving payload attribute in highlighter
Date Tue, 30 Nov 2010 19:16:38 GMT
Ok. I'll go ahead.
Just one more thing: the apidocs warning says "(...) IndexReader should only
contain doc of interest, best to use MemoryIndex (..)".
How can I build a reader with a subset of docs?

Thanks!

On Tue, Nov 30, 2010 at 2:31 PM, Erick Erickson <erickerickson@gmail.com>wrote:

> That's the Lucene developers' way of saying "we don't guarantee backwards
> compatibility".
>
> The devs go to great lengths to honor the contract of not changing public
> APIs without
> going through a deprecation process, which causes quite a lot of work. But
> that conflicts
> with the desirable process of having real-live users get a look at new
> code.
> So this
> warning merely says "the next compilation of Lucene may have a different
> API, so don't
> blame us if you have to recompile against a new jar". OK, I've played
> pretty
> loose with
> the words, but that's the intent.
>
> By and large, though, the functionality will be there in new versions, but
> you may have
> to change the calls you use if you get new jars.
>
> I'd go ahead and use the class/method with confidence that something
> similar
> will be there
> in the future, but you may have to recompile if you get new jars.
>
> Best
> Erick
>
> On Tue, Nov 30, 2010 at 11:06 AM, Fabiano Nunes <fabiano@nunes.me> wrote:
>
> > I've figured out the PayloadSpanUtil class. It's exactly what I'm
> > expecting.
> > But, I'm concerned about the warning message in API docs (indeed, I think
> I
> > dont understand it). There is any other approach? Can I have the same
> > results retrieving the termPositions without performance issues?
> >
> > Thanks.
> >
> > On Tue, Nov 30, 2010 at 1:20 PM, Fabiano Nunes <fabiano@nunes.me> wrote:
> >
> > > Hello,
> > > I'm trying to retrieve payloads from the highlighteds terms by
> > Highlighter
> > > class. In my tests, all terms returned from Highlighter has null as
> > payload.
> > > Example:
> > >
> > > Highlighter h = new Highlighter(new Formatter() {
> > > public String highlightTerm(String originalText, TokenGroup tokenGroup)
> {
> > > Token token = tokenGroup.getToken(0);
> > >  Payload payload = token.getPayload();
> > >  assertNotNull(payload); // <---------------- payload is always null
> > >  return originalText;
> > > }
> > > }, scorer);
> > >
> > > It seems that Highlighter removes payload attribute from all terms
> before
> > > creating its TokenGroup.
> > > How can I preserve it?
> > >
> > > Thanks.
> > >
> >
>

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