Hi,
we are using SOLR to power a sale listing page where each product has an
availability and a position in the sale. We would like SOLR to partition
the products based on their sold_out={true|false} state and to sort the two
partitions by product position.
We started with appending to the query two sort functions: (i)
inventory(product_id): int returning 0 if the product is SOLD_OUT and the
*sku_sale_look_position* to capture the position of the product in a
particular sale.
We ended up by appending the following to the query:
&sort=inventory(id,sku_product_id)+desc,sku_sale_look_position+asc&debug=true'
and it worked fine. However, we have been told that for performance
reasons is better to boost docs based on these two functions thus we
introduced these in our solrconfig.xml:
<str name="boost">inventory(id,sku_product_id)</str>
<str name="boost">recip(sku_sale_look_position, 1, 1, 1)</str>
While these are working fine (same ordering of the first approach) in
SOLR3.6 they stopped to work properly in SOLR4.+
Has something changed in how SOLR uses boosting between SOLR3.6 and SOLR4+
?? Is boosting the best way to achieve our particular sorting requirement ??
Regards and thank you,
Ugo
