You'll want to use org.apache.lucene.index.DocValues. The DocValues api has replaced the field cache.
Joel Bernstein http://joelsolr.blogspot.com/ On Tue, Aug 16, 2016 at 8:18 PM, Roman Chyla <roman.ch...@gmail.com> wrote: > 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 >
