Hi,

I have an Entity that has a field that is indexed. The field uses an @Formula annotation to derive its value. How can I get Hibernate Search/Lucene to re-evaluate this formula on the Entity with the new value when I update the entity?

Thanks in advance,

Kevin.

Hi,
the formula is evaluated by your database, so the new values aren't available to Search in time (technically it should reload the entity and re-index it).

Assuming you can implement your formula in Java as well, you can add an additional getter which does the math, and annotate it with both @Field (to have it inserted in the index) and @Transient (to have it ignored by Hibernate Core: Search won't ignore it)