public virtual void TestCustomSimilarity()
{
RAMDirectory dir = new RAMDirectory();
InitIndex(dir, 10, true, "x"); // documents with two tokens "doc0" and "x", "doc1" and x, etc...
IndexSearcher srchr = new IndexSearcher(dir, true);
MultiSearcher msrchr = GetMultiSearcherInstance(new Searcher[] { srchr });
Similarity customSimilarity = new AnonymousClassDefaultSimilarity(this);
srchr.Similarity = customSimilarity;
msrchr.Similarity = customSimilarity;
Query query = new TermQuery(new Term("contents", "doc0"));
// Get a score from IndexSearcher
TopDocs topDocs = srchr.Search(query, null, 1);
float score1 = topDocs.MaxScore;
// Get the score from MultiSearcher
topDocs = msrchr.Search(query, null, 1);
float scoreN = topDocs.MaxScore;
// The scores from the IndexSearcher and Multisearcher should be the same
// if the same similarity is used.
Assert.AreEqual(score1, scoreN, 1e-6, "MultiSearcher score must be equal to single searcher score!");
}
public virtual void TestSpanScorerZeroSloppyFreq()
{
bool ordered = true;
int slop = 1;
Similarity sim = new AnonymousClassDefaultSimilarity(this);
SpanNearQuery snq = new AnonymousClassSpanNearQuery(sim, this, new SpanQuery[] { MakeSpanTermQuery("t1"), MakeSpanTermQuery("t2") }, slop, ordered);
Scorer spanScorer = snq.Weight(searcher).Scorer(searcher.GetIndexReader(), true, false);
Assert.IsTrue(spanScorer.NextDoc() != DocIdSetIterator.NO_MORE_DOCS, "first doc");
Assert.AreEqual(spanScorer.DocID(), 11, "first doc number");
float score = spanScorer.Score();
Assert.IsTrue(score == 0.0f, "first doc score should be zero, " + score);
Assert.IsTrue(spanScorer.NextDoc() == DocIdSetIterator.NO_MORE_DOCS, "no second doc");
}
public virtual void TestSpanScorerZeroSloppyFreq()
{
bool ordered = true;
int slop = 1;
Similarity sim = new AnonymousClassDefaultSimilarity(this);
SpanNearQuery snq = new AnonymousClassSpanNearQuery(sim, this, new SpanQuery[]{MakeSpanTermQuery("t1"), MakeSpanTermQuery("t2")}, slop, ordered);
Scorer spanScorer = snq.Weight(searcher).Scorer(searcher.GetIndexReader(), true, false);
Assert.IsTrue(spanScorer.NextDoc() != DocIdSetIterator.NO_MORE_DOCS, "first doc");
Assert.AreEqual(spanScorer.DocID(), 11, "first doc number");
float score = spanScorer.Score();
Assert.IsTrue(score == 0.0f, "first doc score should be zero, " + score);
Assert.IsTrue(spanScorer.NextDoc() == DocIdSetIterator.NO_MORE_DOCS, "no second doc");
}
public virtual void TestCustomSimilarity()
{
RAMDirectory dir = new RAMDirectory();
InitIndex(dir, 10, true, "x"); // documents with two tokens "doc0" and "x", "doc1" and x, etc...
IndexSearcher srchr = new IndexSearcher(dir);
MultiSearcher msrchr = GetMultiSearcherInstance(new Searcher[]{srchr});
Similarity customSimilarity = new AnonymousClassDefaultSimilarity(this);
srchr.SetSimilarity(customSimilarity);
msrchr.SetSimilarity(customSimilarity);
Query query = new TermQuery(new Term("contents", "doc0"));
// Get a score from IndexSearcher
TopDocs topDocs = srchr.Search(query, null, 1);
float score1 = topDocs.GetMaxScore();
// Get the score from MultiSearcher
topDocs = msrchr.Search(query, null, 1);
float scoreN = topDocs.GetMaxScore();
// The scores from the IndexSearcher and Multisearcher should be the same
// if the same similarity is used.
Assert.AreEqual(score1, scoreN, 1e-6, "MultiSearcher score must be equal to single esrcher score!");
}