/// <summary>Construct a <code>ReqExclScorer</code>.</summary>
/// <param name="reqScorer">The scorer that must match, except where
/// </param>
/// <param name="exclDisi">indicates exclusion.
/// </param>
public ReqExclScorer(Scorer reqScorer, DocIdSetIterator exclDisi)
: base(null)
{
// No similarity used.
this.reqScorer = reqScorer;
this.exclDisi = exclDisi;
}
private AssertingScorer(Random random, Scorer @in)
: base(@in.Weight)
{
this.Random = random;
this.@in = @in;
this.DocsEnumIn = new AssertingAtomicReader.AssertingDocsEnum(@in);
}
/// <summary>Construct a <code>ReqExclScorer</code>.</summary>
/// <param name="reqScorer">The scorer that must match, except where
/// </param>
/// <param name="exclScorer">indicates exclusion.
/// </param>
public ReqExclScorer(Scorer reqScorer, Scorer exclScorer)
: base(null)
{
// No similarity used.
this.reqScorer = reqScorer;
this.exclScorer = exclScorer;
}
public virtual Scorer CreateScorer(Scorer innerScorer, IndexReader reader, bool scoreDocsInOrder, bool topScorer)
{
if(!(reader is BoboIndexReader))
throw new ArgumentException("IndexReader is not BoboIndexReader");
return new FacetBasedBoostingScorer(this, (BoboIndexReader)reader, innerScorer.Similarity, innerScorer);
}
public override bool Next()
{
if (firstTime)
{
if (!exclScorer.Next())
{
exclScorer = null; // exhausted at start
}
firstTime = false;
}
if (reqScorer == null)
{
return false;
}
if (!reqScorer.Next())
{
reqScorer = null; // exhausted, nothing left
return false;
}
if (exclScorer == null)
{
return true; // reqScorer.next() already returned true
}
return ToNonExcluded();
}
protected internal DisjunctionScorer(Weight weight, Scorer[] subScorers)
: base(weight)
{
this.SubScorers = subScorers;
this.NumScorers = subScorers.Length;
Heapify();
}
/// <summary>Returns the score of the current document matching the query.
/// Initially invalid, until {@link #Next()} is called the first time.
/// </summary>
/// <returns> The score of the required scorer, eventually increased by the score
/// of the optional scorer when it also matches the current document.
/// </returns>
public override float Score()
{
int curDoc = reqScorer.Doc();
float reqScore = reqScorer.Score();
if (firstTimeOptScorer)
{
firstTimeOptScorer = false;
if (!optScorer.SkipTo(curDoc))
{
optScorer = null;
return reqScore;
}
}
else if (optScorer == null)
{
return reqScore;
}
else if ((optScorer.Doc() < curDoc) && (!optScorer.SkipTo(curDoc)))
{
optScorer = null;
return reqScore;
}
// assert (optScorer != null) && (optScorer.doc() >= curDoc);
return (optScorer.Doc() == curDoc)?reqScore + optScorer.Score():reqScore;
}
/// <summary>Construct a <code>ReqOptScorer</code>.</summary>
/// <param name="reqScorer">The required scorer. This must match.
/// </param>
/// <param name="optScorer">The optional scorer. This is used for scoring only.
/// </param>
public ReqOptSumScorer(Scorer reqScorer, Scorer optScorer)
: base(null)
{
// No similarity used.
this.reqScorer = reqScorer;
this.optScorer = optScorer;
}
public override void SetScorer(Scorer scorer)
{
foreach (DocComparator comparator in _comparators)
{
comparator.SetScorer(scorer);
}
}
public override void SetScorer(Scorer scorer)
{
// Set a ScoreCachingWrappingScorer in case the wrapped Collector will call
// score() also.
this.scorer = new ScoreCachingWrappingScorer(scorer);
c.SetScorer(this.scorer);
}
/// <summary>
/// Construct a <code>ReqOptScorer</code>. </summary>
/// <param name="reqScorer"> The required scorer. this must match. </param>
/// <param name="optScorer"> The optional scorer. this is used for scoring only. </param>
public ReqOptSumScorer(Scorer reqScorer, Scorer optScorer)
: base(reqScorer.weight)
{
Debug.Assert(reqScorer != null);
Debug.Assert(optScorer != null);
this.ReqScorer = reqScorer;
this.OptScorer = optScorer;
}
public override void SetScorer(Scorer _scorer)
{
this.scorer = _scorer;
for (int i = 0; i < hitQueue.comparators.Length; i++)
{
hitQueue.comparators[i].SetScorer(_scorer);
}
}
public SubScorer(Scorer scorer, bool required, bool prohibited, HitCollector collector, SubScorer next)
{
this.scorer = scorer;
this.done = !scorer.Next();
this.required = required;
this.prohibited = prohibited;
this.collector = collector;
this.next = next;
}
/// <summary>Add the scorer for a subquery</summary>
/// <param name="scorer">the scorer of a subquery of our associated DisjunctionMaxQuery
/// </param>
public virtual void Add(Scorer scorer)
{
if (scorer.Next())
{
// Initialize and retain only if it produces docs
subScorers.Add(scorer);
more = true;
}
}
public ConjunctionScorer(Similarity similarity, Scorer[] scorers)
: base(similarity)
{
this.scorers = scorers;
coord = similarity.Coord(scorers.Length, scorers.Length);
for (int i = 0; i < scorers.Length; i++)
{
if (scorers[i].NextDoc() == NO_MORE_DOCS)
{
// If even one of the sub-scorers does not have any documents, this
// scorer should not attempt to do any more work.
lastDoc = NO_MORE_DOCS;
return ;
}
}
// Sort the array the first time...
// We don't need to sort the array in any future calls because we know
// it will already start off sorted (all scorers on same doc).
// note that this comparator is not consistent with equals!
System.Array.Sort(scorers, new AnonymousClassComparator(this));
// NOTE: doNext() must be called before the re-sorting of the array later on.
// The reason is this: assume there are 5 scorers, whose first docs are 1,
// 2, 3, 5, 5 respectively. Sorting (above) leaves the array as is. Calling
// doNext() here advances all the first scorers to 5 (or a larger doc ID
// they all agree on).
// However, if we re-sort before doNext() is called, the order will be 5, 3,
// 2, 1, 5 and then doNext() will stop immediately, since the first scorer's
// docs equals the last one. So the invariant that after calling doNext()
// all scorers are on the same doc ID is broken.
if (DoNext() == NO_MORE_DOCS)
{
// The scorers did not agree on any document.
lastDoc = NO_MORE_DOCS;
return ;
}
// If first-time skip distance is any predictor of
// scorer sparseness, then we should always try to skip first on
// those scorers.
// Keep last scorer in it's last place (it will be the first
// to be skipped on), but reverse all of the others so that
// they will be skipped on in order of original high skip.
int end = scorers.Length - 1;
int max = end >> 1;
for (int i = 0; i < max; i++)
{
Scorer tmp = scorers[i];
int idx = end - i - 1;
scorers[i] = scorers[idx];
scorers[idx] = tmp;
}
}
public static Scorer Wrap(Random random, Scorer other)
{
if (other == null || other is AssertingScorer)
{
return other;
}
AssertingScorer assertScorer = new AssertingScorer(random, other);
ASSERTING_INSTANCES[other] = new WeakReference(assertScorer);
return assertScorer;
}
/// <summary>
/// <code>context</code> must contain a key "scorer" which is a
/// <see cref="Lucene.Net.Search.Scorer">Lucene.Net.Search.Scorer</see>
/// .
/// </summary>
/// <exception cref="System.IO.IOException"></exception>
public override FunctionValues GetValues(IDictionary context, AtomicReaderContext
readerContext)
{
Scorer v = (Scorer)context["scorer"];
hashCodeObj = v;
if (v == null)
{
throw new InvalidOperationException("Expressions referencing the score can only be used for sorting"
);
}
return new ScoreFunctionValues(this, v);
}
/// <summary> Creates a new instance of DisjunctionMaxScorer
///
/// </summary>
/// <param name="tieBreakerMultiplier">Multiplier applied to non-maximum-scoring subqueries for a
/// document as they are summed into the result.
/// </param>
/// <param name="similarity">-- not used since our definition involves neither coord nor terms
/// directly
/// </param>
/// <param name="subScorers">The sub scorers this Scorer should iterate on
/// </param>
/// <param name="numScorers">The actual number of scorers to iterate on. Note that the array's
/// length may be larger than the actual number of scorers.
/// </param>
public DisjunctionMaxScorer(float tieBreakerMultiplier, Similarity similarity, Scorer[] subScorers, int numScorers):base(similarity)
{
this.tieBreakerMultiplier = tieBreakerMultiplier;
// The passed subScorers array includes only scorers which have documents
// (DisjunctionMaxQuery takes care of that), and their nextDoc() was already
// called.
this.subScorers = subScorers;
this.numScorers = numScorers;
Heapify();
}
internal void Add(Scorer scorer)
{
if (length >= scorers.Length)
{
// grow the array
Scorer[] temps = new Scorer[scorers.Length * 2];
Array.Copy(scorers, 0, temps, 0, length);
scorers = temps;
}
last += 1;
length += 1;
scorers[last] = scorer;
}
public override int Advance(int target)
{
if (reqScorer == null)
{
return doc = NO_MORE_DOCS;
}
if (exclDisi == null)
{
return doc = reqScorer.Advance(target);
}
if (reqScorer.Advance(target) == NO_MORE_DOCS)
{
reqScorer = null;
return doc = NO_MORE_DOCS;
}
return doc = ToNonExcluded();
}
/// <summary>Returns the score of the current document matching the query.
/// Initially invalid, until <see cref="NextDoc()" /> is called the first time.
/// </summary>
/// <returns> The score of the required scorer, eventually increased by the score
/// of the optional scorer when it also matches the current document.
/// </returns>
public override float Score()
{
int curDoc = reqScorer.DocID();
float reqScore = reqScorer.Score();
if (optScorer == null)
{
return reqScore;
}
int optScorerDoc = optScorer.DocID();
if (optScorerDoc < curDoc && (optScorerDoc = optScorer.Advance(curDoc)) == NO_MORE_DOCS)
{
optScorer = null;
return reqScore;
}
return optScorerDoc == curDoc?reqScore + optScorer.Score():reqScore;
}
public override int NextDoc()
{
if (reqScorer == null)
{
return doc;
}
doc = reqScorer.NextDoc();
if (doc == NO_MORE_DOCS)
{
reqScorer = null; // exhausted, nothing left
return doc;
}
if (exclDisi == null)
{
return doc;
}
return doc = ToNonExcluded();
}
public FacetBasedBoostingScorer(FacetBasedBoostScorerBuilder parent, BoboIndexReader reader, Similarity similarity, Scorer innerScorer)
: base(similarity)
{
_innerScorer = innerScorer;
List<BoboDocScorer> list = new List<BoboDocScorer>();
foreach (var boostEntry in parent._boostMaps)
{
string facetName = boostEntry.Key;
IFacetHandler handler = reader.GetFacetHandler(facetName);
if (!(handler is IFacetScoreable))
throw new ArgumentException(facetName + " does not implement FacetScoreable");
IFacetScoreable facetScoreable = (IFacetScoreable)handler;
BoboDocScorer scorer = facetScoreable.GetDocScorer(reader, parent._scoringFunctionFactory, boostEntry.Value);
if (scorer != null) list.Add(scorer);
}
_facetScorers = list.ToArray();
_docid = -1;
}
public virtual Scorer CreateScorer(Scorer innerScorer, IndexReader reader, bool scoreDocsInOrder, bool topScorer)
{
if (reader is BoboIndexReader)
{
BoboIndexReader boboReader = (BoboIndexReader)reader;
object dataObj = boboReader.GetFacetData(_timeFacetName);
if (dataObj is FacetDataCache)
{
FacetDataCache facetDataCache = (FacetDataCache)(boboReader.GetFacetData(_timeFacetName));
BigSegmentedArray orderArray = facetDataCache.OrderArray;
TermLongList termList = (TermLongList)facetDataCache.ValArray;
return new RecencyBoostScorer(this, innerScorer, orderArray, termList);
}
else
{
throw new InvalidOperationException("underlying facet data must be of type FacetDataCache<long>");
}
}
else
{
throw new ArgumentException("reader not instance of " + typeof(BoboIndexReader));
}
}
internal void Add(Scorer scorer, bool required, bool prohibited)
{
int mask = 0;
if (required || prohibited)
{
if (nextMask == 0)
throw new System.IndexOutOfRangeException("More than 32 required/prohibited clauses in query.");
mask = nextMask;
nextMask = nextMask << 1;
}
else
mask = 0;
if (!prohibited)
maxCoord++;
if (prohibited)
prohibitedMask |= mask;
// update prohibited mask
else if (required)
requiredMask |= mask; // update required mask
scorers = new SubScorer(scorer, required, prohibited, bucketTable.NewCollector(mask), scorers);
}
public override void SetScorer(Scorer scorer)
{
// scorer is not needed
}
public override void SetScorer(Scorer scorer)
{
}
public virtual void SetScorer(Scorer scorer)
{
Collector.SetScorer(scorer);
TqsSet.Clear();
FillLeaves(scorer, TqsSet);
}
internal SingleMatchScorer(BooleanScorer2 enclosingInstance, Scorer scorer) : base(scorer.GetSimilarity())
{
InitBlock(enclosingInstance);
this.scorer = scorer;
}
public override void SetScorer(Scorer scorer)
{
throw new System.NotSupportedException(Lucene.Net.Search.JustCompileSearch.UNSUPPORTED_MSG);
}
public override void SetScorer(Scorer scorer)
{
m_other.SetScorer(scorer);
}
public void SetScorer(Scorer scorer)
{
this.scorer = scorer;
}
public virtual void TestBS2DisjunctionNextVsAdvance()
{
Directory d = NewDirectory();
RandomIndexWriter w = new RandomIndexWriter(Random(), d, Similarity, TimeZone);
int numDocs = AtLeast(300);
for (int docUpto = 0; docUpto < numDocs; docUpto++)
{
string contents = "a";
if (Random().Next(20) <= 16)
{
contents += " b";
}
if (Random().Next(20) <= 8)
{
contents += " c";
}
if (Random().Next(20) <= 4)
{
contents += " d";
}
if (Random().Next(20) <= 2)
{
contents += " e";
}
if (Random().Next(20) <= 1)
{
contents += " f";
}
Document doc = new Document();
doc.Add(new TextField("field", contents, Field.Store.NO));
w.AddDocument(doc);
}
w.ForceMerge(1);
IndexReader r = w.Reader;
IndexSearcher s = NewSearcher(r);
w.Dispose();
for (int iter = 0; iter < 10 * RANDOM_MULTIPLIER; iter++)
{
if (VERBOSE)
{
Console.WriteLine("iter=" + iter);
}
IList <string> terms = new List <string>(Arrays.AsList("a", "b", "c", "d", "e", "f"));
int numTerms = TestUtil.NextInt(Random(), 1, terms.Count);
while (terms.Count > numTerms)
{
terms.RemoveAt(Random().Next(terms.Count));
}
if (VERBOSE)
{
Console.WriteLine(" terms=" + terms);
}
BooleanQuery q = new BooleanQuery();
foreach (string term in terms)
{
q.Add(new BooleanClause(new TermQuery(new Term("field", term)), Occur.SHOULD));
}
Weight weight = s.CreateNormalizedWeight(q);
Scorer scorer = weight.GetScorer(s.m_leafContexts[0], null);
// First pass: just use .NextDoc() to gather all hits
IList <ScoreDoc> hits = new List <ScoreDoc>();
while (scorer.NextDoc() != DocIdSetIterator.NO_MORE_DOCS)
{
hits.Add(new ScoreDoc(scorer.DocID, scorer.GetScore()));
}
if (VERBOSE)
{
Console.WriteLine(" " + hits.Count + " hits");
}
// Now, randomly next/advance through the list and
// verify exact match:
for (int iter2 = 0; iter2 < 10; iter2++)
{
weight = s.CreateNormalizedWeight(q);
scorer = weight.GetScorer(s.m_leafContexts[0], null);
if (VERBOSE)
{
Console.WriteLine(" iter2=" + iter2);
}
int upto = -1;
while (upto < hits.Count)
{
int nextUpto;
int nextDoc;
int left = hits.Count - upto;
if (left == 1 || Random().nextBoolean())
{
// next
nextUpto = 1 + upto;
nextDoc = scorer.NextDoc();
}
else
{
// advance
int inc = TestUtil.NextInt(Random(), 1, left - 1);
nextUpto = inc + upto;
nextDoc = scorer.Advance(hits[nextUpto].Doc);
}
if (nextUpto == hits.Count)
{
Assert.AreEqual(DocIdSetIterator.NO_MORE_DOCS, nextDoc);
}
else
{
ScoreDoc hit = hits[nextUpto];
Assert.AreEqual(hit.Doc, nextDoc);
// Test for precise float equality:
Assert.IsTrue(hit.Score == scorer.GetScore(), "doc " + hit.Doc + " has wrong score: expected=" + hit.Score + " actual=" + scorer.GetScore());
}
upto = nextUpto;
}
}
}
r.Dispose();
d.Dispose();
}
internal QueryFirstScorer(Weight weight, IBits filterBits, Scorer other)
: base(weight)
{
this.scorer = other;
this.filterBits = filterBits;
}
public override void SetScorer(Scorer scorer)
{
collector.SetScorer(scorer);
}
public override void SetScorer(Scorer scorer)
{
_scorer = scorer;
}
public override void SetScorer(Scorer scorer)
{
comparator.SetScorer(scorer);
}
internal virtual void FillLeaves(Scorer scorer, ISet<Scorer> set)
{
if (scorer.Weight.Query is TermQuery)
{
set.Add(scorer);
}
else
{
foreach (ChildScorer child in scorer.Children)
{
FillLeaves(child.Child, set);
}
}
}
public override void SetScorer(Scorer scorer)
{
this.scorer = scorer;
}
internal PrimaryAdvancedLeapFrogScorer(Weight weight, int firstFilteredDoc, DocIdSetIterator filterIter, Scorer other)
: base(weight, filterIter, other, other)
{
this.firstFilteredDoc = firstFilteredDoc;
this.m_primaryDoc = firstFilteredDoc; // initialize to prevent and advance call to move it further
}
public override void SetScorer(Scorer scorer)
{
// Don't do anything. Assign scores in random
}
public override void SetScorer(Scorer scorer)
{
this.scorer = scorer;
m_other.SetScorer(cachedScorer);
}
public virtual void SetScorer(Scorer scorer)
{
collector.SetScorer(scorer);
}
/// <summary>
/// Creates a new instance by wrapping the given scorer. </summary>
public ScoreCachingWrappingScorer(Scorer scorer)
: base(scorer.m_weight)
{
this.scorer = scorer;
}
// LUCENENET specific - we need to implement these here, since our abstract base class // is now an interface. /// <summary> /// Called before successive calls to <see cref="Collect(int)"/>. Implementations /// that need the score of the current document (passed-in to /// <also cref="Collect(int)"/>), should save the passed-in <see cref="Scorer"/> and call /// <see cref="Scorer.GetScore()"/> when needed. /// </summary> public abstract void SetScorer(Scorer scorer);
public override void SetScorer(Scorer scorer)
{
this.scorer = scorer;
base.SetScorer(scorer);
}
public virtual void SetScorer(Scorer scorer)
{
this.Scorer_Renamed = scorer;
}
/// <summary>Returns the scorer to be used for match counting and score summing.
/// Uses the given required scorer and the prohibitedScorers.
/// </summary>
/// <param name="requiredCountingSumScorer">A required scorer already built.
/// </param>
private Scorer AddProhibitedScorers(Scorer requiredCountingSumScorer)
{
return((prohibitedScorers.Count == 0)?requiredCountingSumScorer:new ReqExclScorer(requiredCountingSumScorer, ((prohibitedScorers.Count == 1)?prohibitedScorers[0]:new DisjunctionSumScorer(prohibitedScorers))));
}
protected internal LeapFrogScorer(Weight weight, DocIdSetIterator primary, DocIdSetIterator secondary, Scorer scorer)
: base(weight)
{
this.primary = primary;
this.secondary = secondary;
this.scorer = scorer;
}
/// <summary>
/// Creates a new ChildScorer node with the specified relationship.
/// <p>
/// The relationship can be any be any string that makes sense to
/// the parent Scorer.
/// </summary>
public ChildScorer(Scorer child, string relationship)
{
this.Child = child;
this.Relationship = relationship;
}
/// <summary>
/// Construct a <see cref="ReqExclScorer"/>. </summary>
/// <param name="reqScorer"> The scorer that must match, except where </param>
/// <param name="exclDisi"> Indicates exclusion. </param>
public ReqExclScorer(Scorer reqScorer, DocIdSetIterator exclDisi)
: base(reqScorer.m_weight)
{
this.reqScorer = reqScorer;
this.exclDisi = exclDisi;
}
public override void SetScorer(Scorer scorer)
{
this.scorer = scorer;
comparator.SetScorer(scorer);
}
public virtual void SetScorer(Scorer scorer)
{
@in.SetScorer(AssertingScorer.GetAssertingScorer(random, scorer));
}
public QueryFirstBulkScorer(Scorer scorer, IBits filterBits)
{
this.scorer = scorer;
this.filterBits = filterBits;
}
public override void SetScorer(Scorer scorer)
{
collector.SetScorer(scorer);
}
public virtual void SetScorer(Scorer scorer)
{
// scorer is not needed
}
public override void SetScorer(Scorer scorer)
{
throw new System.NotSupportedException(Lucene.Net.Search.JustCompileSearch.UNSUPPORTED_MSG);
}
public virtual void SetScorer(Scorer scorer)
{
}
public override void SetScorer(Scorer scorer)
{
// Don't do anything. Assign scores in random
}
internal DocsAndFreqs(Scorer scorer)
{
this.Scorer = scorer;
this.Cost = scorer.GetCost();
this.Doc = -1;
}
