Hello dear developers!
I've been wondering if I'd be able to adapt the current
TaggerRequestHandler for using it within the /stream request handler.
Starting out is a tad confusing, which I expected since I have almost no
experience with the solr/lucene codebase.
My goal is as follows: I want to use the result of a previous
select(coll1, ...) as input for adding tags to the result document.
Possibly:
tag(
select(...), field_to_analyze_for_tags,
collection_with_tag_dict, tag_dict_field,
... // remaining tagger configuration options
)
I'm currently stuck at some steps in writing a
'public class TaggerStream extends TupleStream implements Expressible'
at two points:
== Problem 1: Getting 'terms' ==
The TaggerRequestHandler gets a SolrIndexSearcher via the request
> final SolrIndexSearcher searcher = req.getSearcher();
Which in turn is used to to acquire the terms
> Terms terms = searcher.getSlowAtomicReader().terms(indexedField);
which are used for tagging.
I've tried finding something that will yield the equivalent, but as you
might have guessed: I didn't find anything so far.
== Problem 2: Multiple Shards ==
I guess, this might come up sooner or later, hence this is related to
SOLR-14190 (requesting the tagger to work across multiple shards).
I suspect (mind: I really don't know) that acquiring the terms will have
to do something with that, at least when we need to merge the results
from multiple shards, but I have not yet found any code that does that.
Might have been blinded by my confusion, tho.
I'd be thankful if someone can help with any pointers regarding this.
best regards,
David
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