public Result Search (string term, int count, int start) { try { term = term.ToLower (); Term htTerm = new Term ("hottext", term); Query qq1 = new FuzzyQuery (htTerm); Query qq2 = new TermQuery (htTerm); qq2.SetBoost (10f); Query qq3 = new PrefixQuery (htTerm); qq3.SetBoost (10f); DisjunctionMaxQuery q1 = new DisjunctionMaxQuery (0f); q1.Add (qq1); q1.Add (qq2); q1.Add (qq3); Query q2 = new TermQuery (new Term ("text", term)); q2.SetBoost (3f); Query q3 = new TermQuery (new Term ("examples", term)); q3.SetBoost (3f); DisjunctionMaxQuery q = new DisjunctionMaxQuery (0f); q.Add (q1); q.Add (q2); q.Add (q3); TopDocs top = SearchInternal (q, count, start); Result r = new Result (term, searcher, top.ScoreDocs); Results.Add (r); return r; } catch (IOException) { Console.WriteLine ("No index in {0}", dir); return null; } }
public override Query Rewrite(IndexReader reader, MultiTermQuery query) { FilteredTermEnum enumerator = query.GetEnum(reader); BooleanQuery result = new BooleanQuery(true); int count = 0; try { do { Term t = enumerator.Term(); if (t != null) { TermQuery tq = new TermQuery(t); // found a match tq.SetBoost(query.GetBoost() * enumerator.Difference()); // set the boost result.Add(tq, BooleanClause.Occur.SHOULD); // add to query count++; } }while (enumerator.Next()); } finally { enumerator.Close(); } query.IncTotalNumberOfTerms(count); return(result); }
public override Weight CreateWeight(Searcher searcher) { if (terms.Count == 1) { // optimize one-term case Term term = (Term)terms[0]; Query termQuery = new TermQuery(term); termQuery.SetBoost(GetBoost()); return(termQuery.CreateWeight(searcher)); } return(new PhraseWeight(this, searcher)); }
public override Query Rewrite(IndexReader reader) { if (!termLongEnough) { // can only match if it's exact return new TermQuery(term); } FilteredTermEnum enumerator = GetEnum(reader); int maxClauseCount = BooleanQuery.GetMaxClauseCount(); ScoreTermQueue stQueue = new ScoreTermQueue(maxClauseCount); ScoreTerm reusableST = null; try { do { float score = 0.0f; Term t = enumerator.Term(); if (t != null) { score = enumerator.Difference(); if (reusableST == null) { reusableST = new ScoreTerm(t, score); } else if (score >= reusableST.score) { // reusableST holds the last "rejected" entry, so, if // this new score is not better than that, there's no // need to try inserting it reusableST.score = score; reusableST.term = t; } else { continue; } reusableST = (ScoreTerm) stQueue.InsertWithOverflow(reusableST); } } while (enumerator.Next()); } finally { enumerator.Close(); } BooleanQuery query = new BooleanQuery(true); int size = stQueue.Size(); for (int i = 0; i < size; i++) { ScoreTerm st = (ScoreTerm) stQueue.Pop(); TermQuery tq = new TermQuery(st.term); // found a match tq.SetBoost(GetBoost() * st.score); // set the boost query.Add(tq, BooleanClause.Occur.SHOULD); // add to query } return query; }
public override Query Rewrite(IndexReader reader) { if (!termLongEnough) { // can only match if it's exact return(new TermQuery(term)); } FilteredTermEnum enumerator = GetEnum(reader); int maxClauseCount = BooleanQuery.GetMaxClauseCount(); ScoreTermQueue stQueue = new ScoreTermQueue(maxClauseCount); ScoreTerm reusableST = null; try { do { float score = 0.0f; Term t = enumerator.Term(); if (t != null) { score = enumerator.Difference(); if (reusableST == null) { reusableST = new ScoreTerm(t, score); } else if (score >= reusableST.score) { // reusableST holds the last "rejected" entry, so, if // this new score is not better than that, there's no // need to try inserting it reusableST.score = score; reusableST.term = t; } else { continue; } reusableST = (ScoreTerm)stQueue.InsertWithOverflow(reusableST); } }while (enumerator.Next()); } finally { enumerator.Close(); } BooleanQuery query = new BooleanQuery(true); int size = stQueue.Size(); for (int i = 0; i < size; i++) { ScoreTerm st = (ScoreTerm)stQueue.Pop(); TermQuery tq = new TermQuery(st.term); // found a match tq.SetBoost(GetBoost() * st.score); // set the boost query.Add(tq, BooleanClause.Occur.SHOULD); // add to query } return(query); }
public override Query Rewrite(IndexReader reader, MultiTermQuery query) { FilteredTermEnum enumerator = query.GetEnum(reader); BooleanQuery result = new BooleanQuery(true); int count = 0; try { do { Term t = enumerator.Term(); if (t != null) { TermQuery tq = new TermQuery(t); // found a match tq.SetBoost(query.GetBoost() * enumerator.Difference()); // set the boost result.Add(tq, BooleanClause.Occur.SHOULD); // add to query count++; } } while (enumerator.Next()); } finally { enumerator.Close(); } query.IncTotalNumberOfTerms(count); return result; }
public override Weight CreateWeight(Searcher searcher) { if (terms.Count == 1) { // optimize one-term case Term term = (Term) terms[0]; Query termQuery = new TermQuery(term); termQuery.SetBoost(GetBoost()); return termQuery.CreateWeight(searcher); } return new PhraseWeight(this, searcher); }