public PhraseWeight(PhraseQuery outerInstance, IndexSearcher searcher)
{
this.outerInstance = outerInstance;
this.similarity = searcher.Similarity;
IndexReaderContext context = searcher.TopReaderContext;
states = new TermContext[outerInstance.terms.Count];
TermStatistics[] termStats = new TermStatistics[outerInstance.terms.Count];
for (int i = 0; i < outerInstance.terms.Count; i++)
{
Term term = outerInstance.terms[i];
states[i] = TermContext.Build(context, term);
termStats[i] = searcher.TermStatistics(term, states[i]);
}
stats = similarity.ComputeWeight(outerInstance.Boost, searcher.CollectionStatistics(outerInstance.field), termStats);
}
public SpanWeight(SpanQuery query, IndexSearcher searcher)
{
this.Similarity = searcher.Similarity;
this.query = query;
TermContexts = new Dictionary<Term, TermContext>();
SortedSet<Term> terms = new SortedSet<Term>();
query.ExtractTerms(terms);
IndexReaderContext context = searcher.TopReaderContext;
TermStatistics[] termStats = new TermStatistics[terms.Count];
int i = 0;
foreach (Term term in terms)
{
TermContext state = TermContext.Build(context, term);
termStats[i] = searcher.TermStatistics(term, state);
TermContexts[term] = state;
i++;
}
string field = query.Field;
if (field != null)
{
Stats = Similarity.ComputeWeight(query.Boost, searcher.CollectionStatistics(query.Field), termStats);
}
}
public override Explanation IdfExplain(CollectionStatistics collectionStats, TermStatistics[] termStats)
{
return new Explanation(10f, "just a test");
}
public override Explanation IdfExplain(CollectionStatistics collectionStats, TermStatistics[] stats)
{
return new Explanation(1.0f, "Inexplicable");
}