| Expert: Calculate query weights and build query scorers.
A Weight is constructed by a query, given a Searcher ({@link
Query#createWeight(Searcher)}). The {@link #sumOfSquaredWeights()} method
is then called on the top-level query to compute the query normalization
factor (@link Similarity#queryNorm(float)}). This factor is then passed to
{@link #normalize(float)}. At this point the weighting is complete and a
scorer may be constructed by calling {@link #scorer(IndexReader)}. |
