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https://issues.apache.org/jira/browse/LUCENE-4820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13602878#comment-13602878
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Michael McCandless commented on LUCENE-4820:
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bq. Wouldn't it be better if the payload was an additional FST output (e.g. in
the case its an ID or something).
I agree packing surface form + payload into a single output is weirdish ...
making it a separate FST output would be nice, but then I dreaded the different
generics (sometimes FST<Pair> and other times FST<Triple> or FST<Pair<Pair>>).
{quote}
I havent fully thought about the benefits, but i guess an ID value as a
separate output could be used for
other things, like participating in the top-N comparator to simplify the
tie-break logic (which if i recall,
is super-hairy for this suggester).
{quote}
True! Though, we could do the same thing w/ the current approach ... eg break
out the payload and let the app check it for accept / reject (somewhere there
is a patch to expose accept method in AnalyzingSuggester...).
{quote}
It might also be more efficient as a separate output, but I havent thought
about all the cases there either.
its like if payloads dont exist we could just use the empty string or whatever
and there is really not much
added cost.
{quote}
Yeah it could be. Hmm, every arc would add a byte (mostly, sometimes more I
guess if payload is longish), but if the payloads can be shared well, then the
overall FST could be smaller ...
I agree we should explore it!
> Add optional payload to AnalyzingSuggester
> ------------------------------------------
>
> Key: LUCENE-4820
> URL: https://issues.apache.org/jira/browse/LUCENE-4820
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/spellchecker
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: 5.0, 4.3
>
> Attachments: LUCENE-4820.patch, LUCENE-4820.patch
>
>
> It's useful to be able to store custom data (eg maybe a primary key or
> a URL or something) with each suggestion, so that the UI can do things
> like render an image along with each suggestion, or direct to a
> specific URL if the user clicks that suggestion, etc.
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