public override object Clone()
{
int sz = clauses.Count;
SpanQuery[] newClauses = new SpanQuery[sz];
for (int i = 0; i < sz; i++)
{
newClauses[i] = (SpanQuery)clauses[i].Clone();
}
PayloadNearQuery boostingNearQuery = new PayloadNearQuery(newClauses, slop, inOrder, Function);
boostingNearQuery.Boost = Boost;
return boostingNearQuery;
}
public PayloadNearQuery(SpanQuery[] clauses, int slop, bool inOrder)
: this(clauses, slop, inOrder, new AveragePayloadFunction())
{
}
public PayloadNearSpanWeight(PayloadNearQuery outerInstance, SpanQuery query, IndexSearcher searcher)
: base(query, searcher)
{
this.OuterInstance = outerInstance;
}
/// <summary>
/// Fills a <see cref="T:IDictionary{string, WeightedSpanTerm}"/> with <see cref="WeightedSpanTerm"/>s using the terms from the supplied <paramref name="query"/>.
/// </summary>
/// <param name="query"><see cref="Query"/> to extract Terms from</param>
/// <param name="terms">Map to place created <see cref="WeightedSpanTerm"/>s in</param>
/// <exception cref="IOException">If there is a low-level I/O error</exception>
protected virtual void Extract(Query query, IDictionary <string, WeightedSpanTerm> terms)
{
if (query is BooleanQuery booleanQuery)
{
IList <BooleanClause> queryClauses = booleanQuery.Clauses;
for (int i = 0; i < queryClauses.Count; i++)
{
if (!queryClauses[i].IsProhibited)
{
Extract(queryClauses[i].Query, terms);
}
}
}
else if (query is PhraseQuery phraseQuery)
{
Term[] phraseQueryTerms = phraseQuery.GetTerms();
SpanQuery[] clauses = new SpanQuery[phraseQueryTerms.Length];
for (int i = 0; i < phraseQueryTerms.Length; i++)
{
clauses[i] = new SpanTermQuery(phraseQueryTerms[i]);
}
int slop = phraseQuery.Slop;
int[] positions = phraseQuery.GetPositions();
// add largest position increment to slop
if (positions.Length > 0)
{
int lastPos = positions[0];
int largestInc = 0;
int sz = positions.Length;
for (int i = 1; i < sz; i++)
{
int pos = positions[i];
int inc = pos - lastPos;
if (inc > largestInc)
{
largestInc = inc;
}
lastPos = pos;
}
if (largestInc > 1)
{
slop += largestInc;
}
}
bool inorder = slop == 0;
SpanNearQuery sp = new SpanNearQuery(clauses, slop, inorder);
sp.Boost = query.Boost;
ExtractWeightedSpanTerms(terms, sp);
}
else if (query is TermQuery)
{
ExtractWeightedTerms(terms, query);
}
else if (query is SpanQuery spanQuery)
{
ExtractWeightedSpanTerms(terms, spanQuery);
}
else if (query is FilteredQuery filteredQuery)
{
Extract(filteredQuery.Query, terms);
}
else if (query is ConstantScoreQuery constantScoreQuery)
{
Query q = constantScoreQuery.Query;
if (q != null)
{
Extract(q, terms);
}
}
else if (query is CommonTermsQuery)
{
// specialized since rewriting would change the result query
// this query is TermContext sensitive.
ExtractWeightedTerms(terms, query);
}
else if (query is DisjunctionMaxQuery disjunctionMaxQuery)
{
foreach (var q in disjunctionMaxQuery)
{
Extract(q, terms);
}
}
else if (query is MultiPhraseQuery mpq)
{
IList <Term[]> termArrays = mpq.GetTermArrays();
int[] positions = mpq.GetPositions();
if (positions.Length > 0)
{
int maxPosition = positions[positions.Length - 1];
for (int i = 0; i < positions.Length - 1; ++i)
{
if (positions[i] > maxPosition)
{
maxPosition = positions[i];
}
}
var disjunctLists = new JCG.List <SpanQuery> [maxPosition + 1];
int distinctPositions = 0;
for (int i = 0; i < termArrays.Count; ++i)
{
Term[] termArray = termArrays[i];
JCG.List <SpanQuery> disjuncts = disjunctLists[positions[i]];
if (disjuncts is null)
{
disjuncts = (disjunctLists[positions[i]] = new JCG.List <SpanQuery>(termArray.Length));
++distinctPositions;
}
foreach (var term in termArray)
{
disjuncts.Add(new SpanTermQuery(term));
}
}
int positionGaps = 0;
int position = 0;
SpanQuery[] clauses = new SpanQuery[distinctPositions];
foreach (var disjuncts in disjunctLists)
{
if (disjuncts != null)
{
clauses[position++] = new SpanOrQuery(disjuncts.ToArray());
}
else
{
++positionGaps;
}
}
int slop = mpq.Slop;
bool inorder = (slop == 0);
SpanNearQuery sp = new SpanNearQuery(clauses, slop + positionGaps, inorder);
sp.Boost = query.Boost;
ExtractWeightedSpanTerms(terms, sp);
}
}
else
{
Query origQuery = query;
if (query is MultiTermQuery)
{
if (!expandMultiTermQuery)
{
return;
}
MultiTermQuery copy = (MultiTermQuery)query.Clone();
copy.MultiTermRewriteMethod = MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE;
origQuery = copy;
}
IndexReader reader = GetLeafContext().Reader;
Query rewritten = origQuery.Rewrite(reader);
if (rewritten != origQuery)
{
// only rewrite once and then flatten again - the rewritten query could have a speacial treatment
// if this method is overwritten in a subclass or above in the next recursion
Extract(rewritten, terms);
}
}
ExtractUnknownQuery(query, terms);
}
private void GetPayloads(ICollection<sbyte[]> payloads, SpanQuery query)
{
IDictionary<Term, TermContext> termContexts = new Dictionary<Term, TermContext>();
SortedSet<Term> terms = new SortedSet<Term>();
query.ExtractTerms(terms);
foreach (Term term in terms)
{
termContexts[term] = TermContext.Build(Context, term);
}
foreach (AtomicReaderContext atomicReaderContext in Context.Leaves())
{
Spans spans = query.GetSpans(atomicReaderContext, ((AtomicReader)atomicReaderContext.Reader()).LiveDocs, termContexts);
while (spans.Next() == true)
{
if (spans.PayloadAvailable)
{
ICollection<sbyte[]> payload = spans.Payload;
foreach (sbyte[] bytes in payload)
{
payloads.Add(bytes);
}
}
}
}
}
private PayloadNearQuery NewPhraseQuery(string fieldName, string phrase, bool inOrder, PayloadFunction function)
{
string[] words = phrase.Split("[\\s]+".ToCharArray());
SpanQuery[] clauses = new SpanQuery[words.Length];
for (int i = 0; i < clauses.Length; i++)
{
clauses[i] = new SpanTermQuery(new Term(fieldName, words[i]));
}
return new PayloadNearQuery(clauses, 0, inOrder, function);
}
private SpanNearQuery SpanNearQuery(string fieldName, string words)
{
string[] wordList = words.Split("[\\s]+".ToCharArray());
SpanQuery[] clauses = new SpanQuery[wordList.Length];
for (int i = 0; i < clauses.Length; i++)
{
clauses[i] = new PayloadTermQuery(new Term(fieldName, wordList[i]), new AveragePayloadFunction());
}
return new SpanNearQuery(clauses, 10000, false);
}
public RemoteClusteredSpanQuery(SpanQuery query)
: base(query)
{
}
/// <summary>
/// MACRO for SpanNotQuery </summary>
public virtual SpanNotQuery Snot(SpanQuery i, SpanQuery e)
{
return(new SpanNotQuery(i, e));
}
public SpanLastQuery(SpanQuery match, Analyzer analyzer)
{
this.match = match;
this.analyzer = analyzer;
}
public SpanLastQuery(SpanQuery match, int end)
: this(match, (Analyzer) new StandardAnalyzer(global::Lucene.Net.Util.Version.LUCENE_30))
{
}
/// <summary>
/// Extracts the specified query.
/// </summary>
/// <param name="query">The query.</param>
/// <param name="terms">The terms.</param>
private void Extract(Query query, IDictionary <String, WeightedSpanTerm> terms)
{
if (query is BooleanQuery)
{
BooleanClause[] queryClauses = ((BooleanQuery)query).GetClauses();
for (int i = 0; i < queryClauses.Length; i++)
{
if (!queryClauses[i].IsProhibited)
{
Extract(queryClauses[i].Query, terms);
}
}
}
else if (query is PhraseQuery)
{
PhraseQuery phraseQuery = ((PhraseQuery)query);
Term[] phraseQueryTerms = phraseQuery.GetTerms();
SpanQuery[] clauses = new SpanQuery[phraseQueryTerms.Length];
for (int i = 0; i < phraseQueryTerms.Length; i++)
{
clauses[i] = new SpanTermQuery(phraseQueryTerms[i]);
}
int slop = phraseQuery.Slop;
int[] positions = phraseQuery.GetPositions();
// add largest position increment to slop
if (positions.Length > 0)
{
int lastPos = positions[0];
int largestInc = 0;
int sz = positions.Length;
for (int i = 1; i < sz; i++)
{
int pos = positions[i];
int inc = pos - lastPos;
if (inc > largestInc)
{
largestInc = inc;
}
lastPos = pos;
}
if (largestInc > 1)
{
slop += largestInc;
}
}
bool inorder = slop == 0;
SpanNearQuery sp = new SpanNearQuery(clauses, slop, inorder);
sp.Boost = query.Boost;
ExtractWeightedSpanTerms(terms, sp);
}
else if (query is TermQuery)
{
ExtractWeightedTerms(terms, query);
}
else if (query is SpanQuery)
{
ExtractWeightedSpanTerms(terms, (SpanQuery)query);
}
else if (query is FilteredQuery)
{
Extract(((FilteredQuery)query).Query, terms);
}
else if (query is DisjunctionMaxQuery)
{
foreach (var q in ((DisjunctionMaxQuery)query))
{
Extract(q, terms);
}
}
else if (query is MultiTermQuery && expandMultiTermQuery)
{
MultiTermQuery mtq = ((MultiTermQuery)query);
if (mtq.RewriteMethod != MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE)
{
mtq = (MultiTermQuery)mtq.Clone();
mtq.RewriteMethod = MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE;
query = mtq;
}
FakeReader fReader = new FakeReader();
MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE.Rewrite(fReader, mtq);
if (fReader.Field != null)
{
IndexReader ir = GetReaderForField(fReader.Field);
Extract(query.Rewrite(ir), terms);
}
}
else if (query is MultiPhraseQuery)
{
MultiPhraseQuery mpq = (MultiPhraseQuery)query;
IList <Term[]> termArrays = mpq.GetTermArrays();
int[] positions = mpq.GetPositions();
if (positions.Length > 0)
{
int maxPosition = positions[positions.Length - 1];
for (int i = 0; i < positions.Length - 1; ++i)
{
if (positions[i] > maxPosition)
{
maxPosition = positions[i];
}
}
var disjunctLists = new List <SpanQuery> [maxPosition + 1];
int distinctPositions = 0;
for (int i = 0; i < termArrays.Count; ++i)
{
Term[] termArray = termArrays[i];
List <SpanQuery> disjuncts = disjunctLists[positions[i]];
if (disjuncts == null)
{
disjuncts = (disjunctLists[positions[i]] = new List <SpanQuery>(termArray.Length));
++distinctPositions;
}
for (int j = 0; j < termArray.Length; ++j)
{
disjuncts.Add(new SpanTermQuery(termArray[j]));
}
}
int positionGaps = 0;
int position = 0;
SpanQuery[] clauses = new SpanQuery[distinctPositions];
for (int i = 0; i < disjunctLists.Length; ++i)
{
List <SpanQuery> disjuncts = disjunctLists[i];
if (disjuncts != null)
{
clauses[position++] = new SpanOrQuery(disjuncts.ToArray());
}
else
{
++positionGaps;
}
}
int slop = mpq.Slop;
bool inorder = (slop == 0);
SpanNearQuery sp = new SpanNearQuery(clauses, slop + positionGaps, inorder);
sp.Boost = query.Boost;
ExtractWeightedSpanTerms(terms, sp);
}
}
}
/// <summary>
/// Extracts the weighted span terms.
/// </summary>
/// <param name="terms">The terms.</param>
/// <param name="spanQuery">The span query.</param>
private void ExtractWeightedSpanTerms(IDictionary <String, WeightedSpanTerm> terms, SpanQuery spanQuery)
{
HashSet <String> fieldNames;
if (fieldName == null)
{
fieldNames = new HashSet <String>();
CollectSpanQueryFields(spanQuery, fieldNames);
}
else
{
fieldNames = new HashSet <String>();
fieldNames.Add(fieldName);
}
// To support the use of the default field name
if (defaultField != null)
{
fieldNames.Add(defaultField);
}
IDictionary <String, SpanQuery> queries = new HashMap <String, SpanQuery>();
var nonWeightedTerms = new HashSet <Term>();
bool mustRewriteQuery = MustRewriteQuery(spanQuery);
if (mustRewriteQuery)
{
foreach (String field in fieldNames)
{
SpanQuery rewrittenQuery = (SpanQuery)spanQuery.Rewrite(GetReaderForField(field));
queries[field] = rewrittenQuery;
rewrittenQuery.ExtractTerms(nonWeightedTerms);
}
}
else
{
spanQuery.ExtractTerms(nonWeightedTerms);
}
List <PositionSpan> spanPositions = new List <PositionSpan>();
foreach (String field in fieldNames)
{
IndexReader reader = GetReaderForField(field);
Spans spans;
if (mustRewriteQuery)
{
spans = queries[field].GetSpans(reader);
}
else
{
spans = spanQuery.GetSpans(reader);
}
// collect span positions
while (spans.Next())
{
spanPositions.Add(new PositionSpan(spans.Start(), spans.End() - 1));
}
}
if (spanPositions.Count == 0)
{
// no spans found
return;
}
foreach (Term queryTerm in nonWeightedTerms)
{
if (FieldNameComparator(queryTerm.Field))
{
WeightedSpanTerm weightedSpanTerm = terms[queryTerm.Text];
if (weightedSpanTerm == null)
{
weightedSpanTerm = new WeightedSpanTerm(spanQuery.Boost, queryTerm.Text);
weightedSpanTerm.AddPositionSpans(spanPositions);
weightedSpanTerm.SetPositionSensitive(true);
terms[queryTerm.Text] = weightedSpanTerm;
}
else
{
if (spanPositions.Count > 0)
{
weightedSpanTerm.AddPositionSpans(spanPositions);
}
}
}
}
}
/// <summary>
/// Formats the query info.
/// </summary>
/// <param name="query">The query.</param>
/// <returns>String containing formatted QueryInfo</returns>
protected override string FormatQueryInfo(BaseMultiIndexIdQuery <SpanQueryResult> query)
{
SpanQuery spanQuery = query as SpanQuery;
return(spanQuery.ToString());
}
public PayloadNearQuery(SpanQuery[] clauses, int slop, bool inOrder, PayloadFunction function)
: base(clauses, slop, inOrder)
{
FieldName = clauses[0].Field; // all clauses must have same field
this.Function = function;
}
/// <summary>
/// MACRO for SpanOrQuery containing two SpanQueries </summary>
public virtual SpanOrQuery Sor(SpanQuery s, SpanQuery m, SpanQuery e)
{
return(new SpanOrQuery(s, m, e));
}
/// <summary>
/// MACRO for SpanNotQuery </summary>
public virtual SpanNotQuery Snot(SpanQuery i, SpanQuery e)
{
return new SpanNotQuery(i, e);
}
public virtual void TestPayloadNear()
{
SpanNearQuery q1, q2;
PayloadNearQuery query;
//SpanNearQuery(clauses, 10000, false)
q1 = SpanNearQuery("field2", "twenty two");
q2 = SpanNearQuery("field2", "twenty three");
SpanQuery[] clauses = new SpanQuery[2];
clauses[0] = q1;
clauses[1] = q2;
query = new PayloadNearQuery(clauses, 10, false);
//System.out.println(query.toString());
Assert.AreEqual(12, Searcher.Search(query, null, 100).TotalHits);
/*
System.out.println(hits.TotalHits);
for (int j = 0; j < hits.ScoreDocs.Length; j++) {
ScoreDoc doc = hits.ScoreDocs[j];
System.out.println("doc: "+doc.Doc+", score: "+doc.Score);
}
*/
}
/// <summary>
/// MACRO for SpanOrQuery containing two SpanQueries </summary>
public virtual SpanOrQuery Sor(SpanQuery s, SpanQuery m, SpanQuery e)
{
return new SpanOrQuery(s, m, e);
}
public virtual void TestComplexNested()
{
PayloadNearQuery query;
TopDocs hits;
// combine ordered and unordered spans with some nesting to make sure all payloads are counted
SpanQuery q1 = NewPhraseQuery("field", "nine hundred", true, new AveragePayloadFunction());
SpanQuery q2 = NewPhraseQuery("field", "ninety nine", true, new AveragePayloadFunction());
SpanQuery q3 = NewPhraseQuery("field", "nine ninety", false, new AveragePayloadFunction());
SpanQuery q4 = NewPhraseQuery("field", "hundred nine", false, new AveragePayloadFunction());
SpanQuery[] clauses = new SpanQuery[] { new PayloadNearQuery(new SpanQuery[] { q1, q2 }, 0, true), new PayloadNearQuery(new SpanQuery[] { q3, q4 }, 0, false) };
query = new PayloadNearQuery(clauses, 0, false);
hits = Searcher.Search(query, null, 100);
Assert.IsTrue(hits != null, "hits is null and it shouldn't be");
// should be only 1 hit - doc 999
Assert.IsTrue(hits.ScoreDocs.Length == 1, "should only be one hit");
// the score should be 3 - the average of all the underlying payloads
ScoreDoc doc = hits.ScoreDocs[0];
// System.out.println("Doc: " + doc.toString());
// System.out.println("Explain: " + searcher.Explain(query, doc.Doc));
Assert.IsTrue(doc.Score == 3, doc.Score + " does not equal: " + 3);
}
/// <summary>
/// MACRO for SpanNearQuery containing three SpanQueries </summary>
public virtual SpanNearQuery Snear(SpanQuery s, SpanQuery m, SpanQuery e, int slop, bool inOrder)
{
return new SpanNearQuery(new SpanQuery[] { s, m, e }, slop, inOrder);
}
public virtual void TestPayloadsPos0()
{
Directory dir = NewDirectory();
RandomIndexWriter writer = new RandomIndexWriter(Random(), dir, new MockPayloadAnalyzer());
Document doc = new Document();
doc.Add(new TextField("content", new StringReader("a a b c d e a f g h i j a b k k")));
writer.AddDocument(doc);
IndexReader readerFromWriter = writer.Reader;
AtomicReader r = SlowCompositeReaderWrapper.Wrap(readerFromWriter);
DocsAndPositionsEnum tp = r.TermPositionsEnum(new Term("content", "a"));
int count = 0;
Assert.IsTrue(tp.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
// "a" occurs 4 times
Assert.AreEqual(4, tp.Freq());
Assert.AreEqual(0, tp.NextPosition());
Assert.AreEqual(1, tp.NextPosition());
Assert.AreEqual(3, tp.NextPosition());
Assert.AreEqual(6, tp.NextPosition());
// only one doc has "a"
Assert.AreEqual(DocIdSetIterator.NO_MORE_DOCS, tp.NextDoc());
IndexSearcher @is = NewSearcher(readerFromWriter);
SpanTermQuery stq1 = new SpanTermQuery(new Term("content", "a"));
SpanTermQuery stq2 = new SpanTermQuery(new Term("content", "k"));
SpanQuery[] sqs = new SpanQuery[] { stq1, stq2 };
SpanNearQuery snq = new SpanNearQuery(sqs, 30, false);
count = 0;
bool sawZero = false;
if (VERBOSE)
{
Console.WriteLine("\ngetPayloadSpans test");
}
Search.Spans.Spans pspans = MultiSpansWrapper.Wrap(@is.TopReaderContext, snq);
while (pspans.Next())
{
if (VERBOSE)
{
Console.WriteLine("doc " + pspans.Doc() + ": span " + pspans.Start() + " to " + pspans.End());
}
var payloads = pspans.Payload;
sawZero |= pspans.Start() == 0;
foreach (var bytes in payloads)
{
count++;
if (VERBOSE)
{
Console.WriteLine(" payload: " + Encoding.UTF8.GetString((byte[])(Array)bytes));
}
}
}
Assert.IsTrue(sawZero);
Assert.AreEqual(5, count);
// System.out.println("\ngetSpans test");
Search.Spans.Spans spans = MultiSpansWrapper.Wrap(@is.TopReaderContext, snq);
count = 0;
sawZero = false;
while (spans.Next())
{
count++;
sawZero |= spans.Start() == 0;
// System.out.println(spans.Doc() + " - " + spans.Start() + " - " +
// spans.End());
}
Assert.AreEqual(4, count);
Assert.IsTrue(sawZero);
// System.out.println("\nPayloadSpanUtil test");
sawZero = false;
PayloadSpanUtil psu = new PayloadSpanUtil(@is.TopReaderContext);
var pls = psu.GetPayloadsForQuery(snq);
count = pls.Count;
foreach (var bytes in pls)
{
string s = Encoding.UTF8.GetString(bytes);
//System.out.println(s);
sawZero |= s.Equals("pos: 0");
}
Assert.AreEqual(5, count);
Assert.IsTrue(sawZero);
writer.Dispose();
@is.IndexReader.Dispose();
dir.Dispose();
}
public VirtualSpanQuery(SpanQuery query)
: base(query)
{
}
private void QueryToSpanQuery(Query query, ICollection<sbyte[]> payloads)
{
if (query is BooleanQuery)
{
BooleanClause[] queryClauses = ((BooleanQuery)query).Clauses;
for (int i = 0; i < queryClauses.Length; i++)
{
if (!queryClauses[i].Prohibited)
{
QueryToSpanQuery(queryClauses[i].Query, payloads);
}
}
}
else if (query is PhraseQuery)
{
Term[] phraseQueryTerms = ((PhraseQuery)query).Terms;
SpanQuery[] clauses = new SpanQuery[phraseQueryTerms.Length];
for (int i = 0; i < phraseQueryTerms.Length; i++)
{
clauses[i] = new SpanTermQuery(phraseQueryTerms[i]);
}
int slop = ((PhraseQuery)query).Slop;
bool inorder = false;
if (slop == 0)
{
inorder = true;
}
SpanNearQuery sp = new SpanNearQuery(clauses, slop, inorder);
sp.Boost = query.Boost;
GetPayloads(payloads, sp);
}
else if (query is TermQuery)
{
SpanTermQuery stq = new SpanTermQuery(((TermQuery)query).Term);
stq.Boost = query.Boost;
GetPayloads(payloads, stq);
}
else if (query is SpanQuery)
{
GetPayloads(payloads, (SpanQuery)query);
}
else if (query is FilteredQuery)
{
QueryToSpanQuery(((FilteredQuery)query).Query, payloads);
}
else if (query is DisjunctionMaxQuery)
{
IEnumerator<Query> enumerator = ((DisjunctionMaxQuery)query).GetEnumerator();
while (enumerator.MoveNext())
{
QueryToSpanQuery(enumerator.Current, payloads);
}
}
else if (query is MultiPhraseQuery)
{
MultiPhraseQuery mpq = (MultiPhraseQuery)query;
IList<Term[]> termArrays = mpq.TermArrays;
int[] positions = mpq.Positions;
if (positions.Length > 0)
{
int maxPosition = positions[positions.Length - 1];
for (int i = 0; i < positions.Length - 1; ++i)
{
if (positions[i] > maxPosition)
{
maxPosition = positions[i];
}
}
IList<Query>[] disjunctLists = new List<Query>[maxPosition + 1];
int distinctPositions = 0;
for (int i = 0; i < termArrays.Count; ++i)
{
Term[] termArray = termArrays[i];
IList<Query> disjuncts = disjunctLists[positions[i]];
if (disjuncts == null)
{
disjuncts = (disjunctLists[positions[i]] = new List<Query>(termArray.Length));
++distinctPositions;
}
foreach (Term term in termArray)
{
disjuncts.Add(new SpanTermQuery(term));
}
}
int positionGaps = 0;
int position = 0;
SpanQuery[] clauses = new SpanQuery[distinctPositions];
for (int i = 0; i < disjunctLists.Length; ++i)
{
IList<Query> disjuncts = disjunctLists[i];
if (disjuncts != null)
{
clauses[position++] = new SpanOrQuery(disjuncts.OfType<SpanQuery>().ToArray());
}
else
{
++positionGaps;
}
}
int slop = mpq.Slop;
bool inorder = (slop == 0);
SpanNearQuery sp = new SpanNearQuery(clauses, slop + positionGaps, inorder);
sp.Boost = query.Boost;
GetPayloads(payloads, sp);
}
}
}
/// <summary>
/// Fills a <see cref="T:IDictionary{string, WeightedSpanTerm}"/> with <see cref="WeightedSpanTerm"/>s using the terms from the supplied <see cref="SpanQuery"/>.
/// </summary>
/// <param name="terms"><see cref="T:IDictionary{string, WeightedSpanTerm}"/> to place created <see cref="WeightedSpanTerm"/>s in</param>
/// <param name="spanQuery"><see cref="SpanQuery"/> to extract Terms from</param>
/// <exception cref="IOException">If there is a low-level I/O error</exception>
protected virtual void ExtractWeightedSpanTerms(IDictionary <string, WeightedSpanTerm> terms, SpanQuery spanQuery)
{
ISet <string> fieldNames;
if (fieldName is null)
{
fieldNames = new JCG.HashSet <string>();
CollectSpanQueryFields(spanQuery, fieldNames);
}
else
{
fieldNames = new JCG.HashSet <string>
{
fieldName
};
}
// To support the use of the default field name
if (defaultField != null)
{
fieldNames.Add(defaultField);
}
IDictionary <string, SpanQuery> queries = new JCG.Dictionary <string, SpanQuery>();
var nonWeightedTerms = new JCG.HashSet <Term>();
bool mustRewriteQuery = MustRewriteQuery(spanQuery);
if (mustRewriteQuery)
{
foreach (string field in fieldNames)
{
SpanQuery rewrittenQuery = (SpanQuery)spanQuery.Rewrite(GetLeafContext().Reader);
queries[field] = rewrittenQuery;
rewrittenQuery.ExtractTerms(nonWeightedTerms);
}
}
else
{
spanQuery.ExtractTerms(nonWeightedTerms);
}
IList <PositionSpan> spanPositions = new JCG.List <PositionSpan>();
foreach (string field in fieldNames)
{
SpanQuery q;
q = mustRewriteQuery ? queries[field] : spanQuery;
AtomicReaderContext context = GetLeafContext();
var termContexts = new JCG.Dictionary <Term, TermContext>();
ISet <Term> extractedTerms = new JCG.SortedSet <Term>();
q.ExtractTerms(extractedTerms);
foreach (Term term in extractedTerms)
{
termContexts[term] = TermContext.Build(context, term);
}
IBits acceptDocs = context.AtomicReader.LiveDocs;
Spans.Spans spans = q.GetSpans(context, acceptDocs, termContexts);
// collect span positions
while (spans.MoveNext())
{
spanPositions.Add(new PositionSpan(spans.Start, spans.End - 1));
}
}
if (spanPositions.Count == 0)
{
// no spans found
return;
}
foreach (Term queryTerm in nonWeightedTerms)
{
if (FieldNameComparer(queryTerm.Field))
{
if (!terms.TryGetValue(queryTerm.Text, out WeightedSpanTerm weightedSpanTerm) || weightedSpanTerm is null)
{
weightedSpanTerm = new WeightedSpanTerm(spanQuery.Boost, queryTerm.Text);
weightedSpanTerm.AddPositionSpans(spanPositions);
weightedSpanTerm.IsPositionSensitive = true;
terms[queryTerm.Text] = weightedSpanTerm;
}
else
{
if (spanPositions.Count > 0)
{
weightedSpanTerm.AddPositionSpans(spanPositions);
}
}
}
}
}
