public virtual void TestCustomIDF()
{
Directory indexStore = NewDirectory();
RandomIndexWriter writer = new RandomIndexWriter(
#if FEATURE_INSTANCE_TESTDATA_INITIALIZATION
this,
#endif
Random, indexStore);
Add("this is a test", "object", writer);
Add("a note", "note", writer);
IndexReader reader = writer.GetReader();
IndexSearcher searcher = NewSearcher(reader);
searcher.Similarity = new DefaultSimilarityAnonymousInnerClassHelper(this);
MultiPhraseQuery query = new MultiPhraseQuery();
query.Add(new Term[] { new Term("body", "this"), new Term("body", "that") });
query.Add(new Term("body", "is"));
Weight weight = query.CreateWeight(searcher);
Assert.AreEqual(10f * 10f, weight.GetValueForNormalization(), 0.001f);
writer.Dispose();
reader.Dispose();
indexStore.Dispose();
}
public override float GetValueForNormalization()
{
// we calculate sumOfSquaredWeights of the inner weight, but ignore it (just to initialize everything)
if (innerWeight != null)
{
innerWeight.GetValueForNormalization();
}
queryWeight = outerInstance.Boost;
return(queryWeight * queryWeight);
}
/// <summary>
/// Creates a normalized weight for a top-level <see cref="Query"/>.
/// The query is rewritten by this method and <see cref="Query.CreateWeight(IndexSearcher)"/> called,
/// afterwards the <see cref="Weight"/> is normalized. The returned <see cref="Weight"/>
/// can then directly be used to get a <see cref="Scorer"/>.
/// <para/>
/// @lucene.internal
/// </summary>
public virtual Weight CreateNormalizedWeight(Query query)
{
query = Rewrite(query);
Weight weight = query.CreateWeight(this);
float v = weight.GetValueForNormalization();
float norm = Similarity.QueryNorm(v);
if (float.IsInfinity(norm) || float.IsNaN(norm))
{
norm = 1.0f;
}
weight.Normalize(norm, 1.0f);
return(weight);
}
public override float GetValueForNormalization()
{
return(weight.GetValueForNormalization() * outerInstance.Boost * outerInstance.Boost); // boost sub-weight
}
public override float GetValueForNormalization()
{
return(@in.GetValueForNormalization());
}
public override float GetValueForNormalization() => @in.GetValueForNormalization();
