: http://www.slideshare.net/thelabdude/boosting-documents-in-solr-lucene-revolution-2011 ... : > Start by looking at Solr's external file field and
Rather then using ExternalFileField as imspiration, i would suggest you look at implementing a custom ValueSourceParser... http://mail-archives.apache.org/mod_mbox/lucene-solr-user/201301.mbox/%3Calpine.DEB.2.02.1301071825090.14692@frisbee%3E Then you can either use your custom function as a boost function included the main query, or in isolation as part of a "sort by function" which could also include the score from the main query. (Which one you choose should depends on your final goal, and how expensive it is to query your external datasource to find out hte per-user rankings.) -Hoss
