Fast range faceting using segment trees and the Java ASM library In Lucene's facet module we recently added support for dynamic range faceting , to show how many hits match each of a dynamic set of ranges. For example, the Updated drill-down in the Lucene/Solr issue search application uses range facets. Another example is distance facets (< 1 km, < 2 km, etc.), where the distance is dynamically computed based on the user's current location. Price faceting might also use range facets, if the ranges cannot be established during indexing. To implement range faceting, for each hit,
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