Doing what does using SolrJ API

[Steven White]

Hi everyone,

I want to avoid creating a <copyField dest="CatchAll"
source="OneFieldOfMany"/> in my schema (there will be over 1000 of them and
maybe more so managing it will be a pain).  Instead, I want to use SolrJ
API to do what <copyField/> does.  Any example of how I can do this?  If
there is an example online, that would be great.

Thanks in advance.

Steven