public override Query Rewrite(IndexReader reader, MultiTermQuery query)
{
// Get the enum and start visiting terms. If we
// exhaust the enum before hitting either of the
// cutoffs, we use ConstantBooleanQueryRewrite; else,
// ConstantFilterRewrite:
System.Collections.ArrayList pendingTerms = new System.Collections.ArrayList();
int docCountCutoff = (int)((docCountPercent / 100.0) * reader.MaxDoc());
int termCountLimit = System.Math.Min(BooleanQuery.GetMaxClauseCount(), termCountCutoff);
int docVisitCount = 0;
FilteredTermEnum enumerator = query.GetEnum(reader);
try
{
while (true)
{
Term t = enumerator.Term();
if (t != null)
{
pendingTerms.Add(t);
// Loading the TermInfo from the terms dict here
// should not be costly, because 1) the
// query/filter will load the TermInfo when it
// runs, and 2) the terms dict has a cache:
docVisitCount += reader.DocFreq(t);
}
if (pendingTerms.Count >= termCountLimit || docVisitCount >= docCountCutoff)
{
// Too many terms -- make a filter.
Query result = new ConstantScoreQuery(new MultiTermQueryWrapperFilter(query));
result.SetBoost(query.GetBoost());
return(result);
}
else if (!enumerator.Next())
{
// Enumeration is done, and we hit a small
// enough number of terms & docs -- just make a
// BooleanQuery, now
System.Collections.IEnumerator it = pendingTerms.GetEnumerator();
BooleanQuery bq = new BooleanQuery(true);
while (it.MoveNext())
{
TermQuery tq = new TermQuery((Term)it.Current);
bq.Add(tq, BooleanClause.Occur.SHOULD);
}
// Strip scores
Query result = new ConstantScoreQuery(new QueryWrapperFilter(bq));
result.SetBoost(query.GetBoost());
query.IncTotalNumberOfTerms(pendingTerms.Count);
return(result);
}
}
}
finally
{
enumerator.Close();
}
}
public override Query Rewrite(IndexReader reader, MultiTermQuery query)
{
Query result = new ConstantScoreQuery(new MultiTermQueryWrapperFilter(query));
result.SetBoost(query.GetBoost());
return(result);
}
public virtual void TestCSQ4()
{
Query q = new ConstantScoreQuery(new ItemizedFilter(new int[] { 3 }));
q.SetBoost(0);
Bqtest(q, new int[] { 3 });
}
public virtual void TestCSQ3()
{
Query q = new ConstantScoreQuery(new ItemizedFilter(new int[] { 0, 2 }));
q.SetBoost(1000);
Qtest(q, new int[] { 0, 2 });
}
public override Query Rewrite(IndexReader reader, MultiTermQuery query)
{
// strip the scores off
Query result = new ConstantScoreQuery(new QueryWrapperFilter(base.Rewrite(reader, query)));
result.SetBoost(query.GetBoost());
return(result);
}
public override Query Rewrite(IndexReader reader)
{
// Map to RangeFilter semantics which are slightly different...
RangeFilter rangeFilt = new RangeFilter(fieldName, lowerVal != null ? lowerVal : "", upperVal, (System.Object)lowerVal == (System.Object) "" ? false : includeLower, upperVal == null ? false : includeUpper);
Query q = new ConstantScoreQuery(rangeFilt);
q.SetBoost(GetBoost());
return(q);
}
public virtual void Test2()
{
BooleanQuery q = new BooleanQuery();
q.Add(qp.Parse("\"w1 w2\"~1"), Occur.MUST);
q.Add(Snear(St("w2"), Sor("w5", "zz"), 4, true), Occur.SHOULD);
q.Add(Snear(Sf("w3", 2), St("w2"), St("w3"), 5, true), Occur.SHOULD);
Query t = new FilteredQuery(qp.Parse("xx"), new ItemizedFilter(new int[] { 1, 3 }));
t.SetBoost(1000);
q.Add(t, Occur.SHOULD);
t = new ConstantScoreQuery(new ItemizedFilter(new int[] { 0, 2 }));
t.SetBoost(-20.0f);
q.Add(t, Occur.SHOULD);
DisjunctionMaxQuery dm = new DisjunctionMaxQuery(0.2f);
dm.Add(Snear(St("w2"), Sor("w5", "zz"), 4, true));
dm.Add(qp.Parse("QQ"));
dm.Add(qp.Parse("xx yy -zz"));
dm.Add(qp.Parse("-xx -w1"));
DisjunctionMaxQuery dm2 = new DisjunctionMaxQuery(0.5f);
dm2.Add(qp.Parse("w1"));
dm2.Add(qp.Parse("w2"));
dm2.Add(qp.Parse("w3"));
dm.Add(dm2);
q.Add(dm, Occur.SHOULD);
BooleanQuery b = new BooleanQuery();
b.SetMinimumNumberShouldMatch(2);
b.Add(Snear("w1", "w2", 1, true), Occur.SHOULD);
b.Add(Snear("w2", "w3", 1, true), Occur.SHOULD);
b.Add(Snear("w1", "w3", 3, true), Occur.SHOULD);
b.SetBoost(0.0f);
q.Add(b, Occur.SHOULD);
Qtest(q, new int[] { 0, 1, 2 });
}
public virtual void Test1()
{
BooleanQuery q = new BooleanQuery();
q.Add(qp.Parse("\"w1 w2\"~1"), Occur.MUST);
q.Add(Snear(St("w2"), Sor("w5", "zz"), 4, true), Occur.SHOULD);
q.Add(Snear(Sf("w3", 2), St("w2"), St("w3"), 5, true), Occur.SHOULD);
Query t = new FilteredQuery(qp.Parse("xx"), new ItemizedFilter(new int[]{1, 3}));
t.SetBoost(1000);
q.Add(t, Occur.SHOULD);
t = new ConstantScoreQuery(new ItemizedFilter(new int[]{0, 2}));
t.SetBoost(30);
q.Add(t, Occur.SHOULD);
DisjunctionMaxQuery dm = new DisjunctionMaxQuery(0.2f);
dm.Add(Snear(St("w2"), Sor("w5", "zz"), 4, true));
dm.Add(qp.Parse("QQ"));
dm.Add(qp.Parse("xx yy -zz"));
dm.Add(qp.Parse("-xx -w1"));
DisjunctionMaxQuery dm2 = new DisjunctionMaxQuery(0.5f);
dm2.Add(qp.Parse("w1"));
dm2.Add(qp.Parse("w2"));
dm2.Add(qp.Parse("w3"));
dm.Add(dm2);
q.Add(dm, Occur.SHOULD);
BooleanQuery b = new BooleanQuery();
b.SetMinimumNumberShouldMatch(2);
b.Add(Snear("w1", "w2", 1, true), Occur.SHOULD);
b.Add(Snear("w2", "w3", 1, true), Occur.SHOULD);
b.Add(Snear("w1", "w3", 3, true), Occur.SHOULD);
q.Add(b, Occur.SHOULD);
Qtest(q, new int[]{0, 1, 2});
}
public override Query Rewrite(IndexReader reader)
{
// Map to RangeFilter semantics which are slightly different...
RangeFilter rangeFilt = new RangeFilter(fieldName, lowerVal != null ? lowerVal : "", upperVal, (System.Object) lowerVal == (System.Object) ""?false:includeLower, upperVal == null?false:includeUpper);
Query q = new ConstantScoreQuery(rangeFilt);
q.SetBoost(GetBoost());
return q;
}
public virtual void TestCSQ3()
{
Query q = new ConstantScoreQuery(new ItemizedFilter(new int[]{0, 2}));
q.SetBoost(1000);
Qtest(q, new int[]{0, 2});
}
public virtual void TestCSQ4()
{
Query q = new ConstantScoreQuery(new ItemizedFilter(new int[]{3}));
q.SetBoost(0);
Bqtest(q, new int[]{3});
}
public override Query Rewrite(IndexReader reader, MultiTermQuery query)
{
Query result = new ConstantScoreQuery(new MultiTermQueryWrapperFilter(query));
result.SetBoost(query.GetBoost());
return result;
}
public override Query Rewrite(IndexReader reader, MultiTermQuery query)
{
// Get the enum and start visiting terms. If we
// exhaust the enum before hitting either of the
// cutoffs, we use ConstantBooleanQueryRewrite; else,
// ConstantFilterRewrite:
System.Collections.ArrayList pendingTerms = new System.Collections.ArrayList();
int docCountCutoff = (int) ((docCountPercent / 100.0) * reader.MaxDoc());
int termCountLimit = System.Math.Min(BooleanQuery.GetMaxClauseCount(), termCountCutoff);
int docVisitCount = 0;
FilteredTermEnum enumerator = query.GetEnum(reader);
try
{
while (true)
{
Term t = enumerator.Term();
if (t != null)
{
pendingTerms.Add(t);
// Loading the TermInfo from the terms dict here
// should not be costly, because 1) the
// query/filter will load the TermInfo when it
// runs, and 2) the terms dict has a cache:
docVisitCount += reader.DocFreq(t);
}
if (pendingTerms.Count >= termCountLimit || docVisitCount >= docCountCutoff)
{
// Too many terms -- make a filter.
Query result = new ConstantScoreQuery(new MultiTermQueryWrapperFilter(query));
result.SetBoost(query.GetBoost());
return result;
}
else if (!enumerator.Next())
{
// Enumeration is done, and we hit a small
// enough number of terms & docs -- just make a
// BooleanQuery, now
System.Collections.IEnumerator it = pendingTerms.GetEnumerator();
BooleanQuery bq = new BooleanQuery(true);
while (it.MoveNext())
{
TermQuery tq = new TermQuery((Term) it.Current);
bq.Add(tq, BooleanClause.Occur.SHOULD);
}
// Strip scores
Query result = new ConstantScoreQuery(new QueryWrapperFilter(bq));
result.SetBoost(query.GetBoost());
query.IncTotalNumberOfTerms(pendingTerms.Count);
return result;
}
}
}
finally
{
enumerator.Close();
}
}
public override Query Rewrite(IndexReader reader, MultiTermQuery query)
{
// strip the scores off
Query result = new ConstantScoreQuery(new QueryWrapperFilter(base.Rewrite(reader, query)));
result.SetBoost(query.GetBoost());
return result;
}