/// <summary> Returns a Weight that applies the filter to the enclosed query's Weight.
/// This is accomplished by overriding the Scorer returned by the Weight.
/// </summary>
public override Weight CreateWeight(Searcher searcher)
{
Weight weight = query.CreateWeight(searcher);
Similarity similarity = query.GetSimilarity(searcher);
return(new AnonymousClassWeight(weight, similarity, this));
}
/// <summary> Expert: Constructs and initializes a Weight for a top-level query.</summary>
public virtual Weight Weight(Searcher searcher)
{
Query query = searcher.Rewrite(this);
Weight weight = query.CreateWeight(searcher);
float sum = weight.SumOfSquaredWeights();
float norm = GetSimilarity(searcher).QueryNorm(sum);
if (float.IsInfinity(norm) || float.IsNaN(norm))
{
norm = 1.0f;
}
weight.Normalize(norm);
return(weight);
}
