There are two ways: 1> define a dynamic field pattern, i.e. <dynamicField name="*_sum" type="float" ...../>
Now just add any field in the doc you want. If it ends in "_sum" and no other explicit field matches you have a new field. 2> Use the managed schema to add these on the fly. I don't recommend this from what I know of your use case, this is primarily intended for front-ends to be able to modify the schema and/or "field guessing". I do caution you though that either way don't go over-the-top. If you're thinking of thousands of different fields that can lead to performance issues. You can either put stuff in the field on your indexing client or create a custom update component, perhaps the simplest would be a "StatelessScriptUpdateProcessorFactory: see: https://cwiki.apache.org/confluence/display/solr/Update+Request+Processors#UpdateRequestProcessors-UpdateRequestProcessorFactories Best, Erick On Mon, Jul 3, 2017 at 10:52 AM, Pablo Anzorena <anzorena.f...@gmail.com> wrote: > Hey, > > I was wondering if there is some way to add fields "on the fly" based on > arithmetic operations on other fields. For example add a new field > "custom_field" = log(field1) + field2 -5. > > Thanks.
