July 6, 2009

Ranges over Functions in Solr 1.4

Posted by yonik

1 Comment

Solr 1.4 contains a new feature that allows range queries or range filters over arbitrary functions. It’s implemented as a standard Solr QParser plugin, and thus easily available for use any place that accepts the standard Solr Query Syntax by specifying the frange query type. Here’s an example of a filter specifying the lower and upper bounds for a function:

fq={!frange l=0 u=2.2}log(sum(user_ranking,editor_ranking))

The other interesting use for frange is to trade off…

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March 31, 2009

Nested Queries in Solr

Posted by yonik

17 Comments

The ability to nest an arbitrary query type inside another query type is a useful feature that was quietly added to Solr some time ago, along with the support for query parser plugins to support different query types.I finally got around to fixing nested queries for the function query parser, and figured it was high time I documented nested queries, along with the

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