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From simon <>
Subject Defining Document Transformers in Solr Configuration
Date Tue, 27 Feb 2018 20:20:51 GMT
We do quite complex data pulls from a Solr index for subsequent analytics,
currently using a home-grown Python API. Queries might include  a handful
of pseudofields which this API rewrites to an aliased field invoking a
Document Transformer in the 'fl' parameter list.

For example 'numcites' is transformed to

'fl= ....,numcites:[subquery]&numcites.fl=pmid&numcites.q={!terms
f=md_c_pmid v=$row.pmid}&numcites.rows=10&numcites.logParamsList=q',...'

What I'd ideally like to be able to do would be have this transformation
defined in Solr configuration so that it's not tied  to one particular
external API -  defining a macro, if you will, so that you could supply
'fl='a,b,c,%numcites%,...' in the request and have Solr do the expansion.

Is there some way to do this that I've overlooked ? if not, I think it
would be a useful new feature.


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