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.
-Simon
