I need to read data from the index in order to build a special cache. Previously, in SOLR4, this was accomplished with FieldCache or DocTermOrds
Now, I'm struggling to see what API to use, there is many of them: on lucene level: UninvertingReader.getNumericDocValues (and others) <IndexReader>.getNumericValues() MultiDocValues.getNumericValues() MultiFields.getTerms() on solr level: reader.getNumericValues() UninvertingReader.getNumericDocValues() and extensions to FilterLeafReader - eg. very intersting, but undocumented facet accumulators (ex: NumericAcc) I need this for solr, and ideally re-use the existing cache [ie. the special cache is using another fields so those get loaded only once and reused in the old solr; which is a win-win situation] If I use reader.getValues() or FilterLeafReader will I be reading data every time the object is created? What would be the best way to read data only once? Thanks, --roman
