[hibernate-dev] Search: Dynamic Document boosting

[Emmanuel Bernard]

What's your use case?
I am not against that feature but I don't think it covers all use cases:
  - I want a higher boost for more recent documents
  - I change priority in my categories depending on the marketing mood

Said otherwise, can have a true dynamic boost defined at query time,  
not at indexing time.
I think Solr has something named FunctionQuery that can do that.

On  Apr 29, 2009, at 16:47, Sanne Grinovero wrote:

> Hello,
> I'm currently needing to be able to define a per-entity INSTANCE
> different Boost, not just the type.
>
> Currently I could obtain this functionality by using a custom
> classbridge, but the entity is quite complex and building my own
> classbridge I will have to map all fields myself loosing the
> flexibility of annotations for the current type and
> all @IndexedEmbedded.
>
> I'd like to add a new parameter to @Boost; currently it has a float
> mandatory value,
> I'd like to add a new parameter:
>
> Class<BoostScorer> impl();
>
> where BoostScorer is an interface having something like
>
> public float score(Object value);
>
> The annotation would default to an implementation returning constant  
> 1.0f.
>
> This would have an interaction with the existing "value" parameter:
> IMHO they should
> multiply each other, so I'd change the existing value to also have a
> default of 1.0f
> and people might want to change one or both values.
>
> Setting both values might be useful to reuse the same impl on
> different types/fields
> and still be able to statically scale the result from the
> score(Object) function, without having to
> rewrite a new implementation.
>
> What do you think?
>
> Sanne
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