Re: [hibernate-dev] [Hibernate Search] DocValues and Sorting API -> new mapping annotations ?
On Fri, Aug 7, 2015 at 1:14 PM, Sanne Grinovero <sanne(a)hibernate.org> wrote:
A quick update on some more exploration on this:
it turns out sorting on a NumericField when this field is also using
an "indexNullAs" token gets the UninvertingReader approach to throw an
exception.
My two conclusions:
- we need to move away from supporting those tokens in NumericField,
especially as stricter schema is coming in next gen Lucene
- yet another reason to clearly separate fields meant for searching vs
sorting
One possible workaround is to enforce the indexNullAs value to match the
underlying field type, at the
moment it is always a string.
Another possibility is to model "null" as field not present in the lucene
document, instead of a marker token.
Gustavo