#pragma warning restore 612, 618
private static void Search(Index.IndexReader r, int times)
{
var searcher = new Search.IndexSearcher(r);
var docs = new System.Collections.Generic.List <Documents.Document>(10000);
for (int i = 0; i < times; i++)
{
var q = new Search.TermQuery(new Index.Term("title", "volume"));
foreach (var scoreDoc in searcher.Search(q, 100).ScoreDocs)
{
docs.Add(searcher.Doc(scoreDoc.Doc));
}
}
}
public override DocIdSet GetDocIdSet(Index.IndexReader reader, IState state)
{
var values = source.GetValues(reader, state);
return(new ValueSourceFilteredDocIdSet(startingFilter.GetDocIdSet(reader, state), values, this));
}
public override DocIdSet GetDocIdSet(Index.IndexReader reader /*, Bits acceptDocs*/)
{
var bits = new OpenBitSet(reader.MaxDoc);
var terms = new TermsEnumCompatibility(reader, fieldName);
var term = terms.Next();
if (term == null)
return null;
Node scanCell = null;
//cells is treated like a stack. LinkedList conveniently has bulk add to beginning. It's in sorted order so that we
// always advance forward through the termsEnum index.
var cells = new LinkedList<Node>(
grid.GetWorldNode().GetSubCells(queryShape));
//This is a recursive algorithm that starts with one or more "big" cells, and then recursively dives down into the
// first such cell that intersects with the query shape. It's a depth first traversal because we don't move onto
// the next big cell (breadth) until we're completely done considering all smaller cells beneath it. For a given
// cell, if it's *within* the query shape then we can conveniently short-circuit the depth traversal and
// grab all documents assigned to this cell/term. For an intersection of the cell and query shape, we either
// recursively step down another grid level or we decide heuristically (via prefixGridScanLevel) that there aren't
// that many points, and so we scan through all terms within this cell (i.e. the term starts with the cell's term),
// seeing which ones are within the query shape.
while (cells.Count > 0)
{
Node cell = cells.First.Value; cells.RemoveFirst();
var cellTerm = cell.GetTokenString();
var seekStat = terms.Seek(cellTerm);
if (seekStat == TermsEnumCompatibility.SeekStatus.END)
break;
if (seekStat == TermsEnumCompatibility.SeekStatus.NOT_FOUND)
continue;
if (cell.GetLevel() == detailLevel || cell.IsLeaf())
{
terms.Docs(bits);
}
else
{//any other intersection
//If the next indexed term is the leaf marker, then add all of them
var nextCellTerm = terms.Next();
Debug.Assert(nextCellTerm.Text.StartsWith(cellTerm));
scanCell = grid.GetNode(nextCellTerm.Text, scanCell);
if (scanCell.IsLeaf())
{
terms.Docs(bits);
term = terms.Next();//move pointer to avoid potential redundant addDocs() below
}
//Decide whether to continue to divide & conquer, or whether it's time to scan through terms beneath this cell.
// Scanning is a performance optimization trade-off.
bool scan = cell.GetLevel() >= prefixGridScanLevel;//simple heuristic
if (!scan)
{
//Divide & conquer
var lst = cell.GetSubCells(queryShape);
for (var i = lst.Count - 1; i >= 0; i--) //add to beginning
{
cells.AddFirst(lst[i]);
}
}
else
{
//Scan through all terms within this cell to see if they are within the queryShape. No seek()s.
for (var t = terms.Term(); t != null && t.Text.StartsWith(cellTerm); t = terms.Next())
{
scanCell = grid.GetNode(t.Text, scanCell);
int termLevel = scanCell.GetLevel();
if (termLevel > detailLevel)
continue;
if (termLevel == detailLevel || scanCell.IsLeaf())
{
//TODO should put more thought into implications of box vs point
Shape cShape = termLevel == grid.GetMaxLevels() ? scanCell.GetCenter() : scanCell.GetShape();
if (queryShape.Relate(cShape) == SpatialRelation.DISJOINT)
continue;
terms.Docs(bits);
}
}//term loop
}
}
}//cell loop
return bits;
}
public override Query Rewrite(Index.IndexReader reader, IState state)
{
return(this);
}
public override Query Rewrite(Index.IndexReader reader)
{
return(this);
}
public override void SetNextReader(Index.IndexReader reader, int base_Renamed)
{
base.SetNextReader(reader, base_Renamed);
this._afterDoc = this._after.Doc - base_Renamed;
}
public override Search.Query Rewrite(Index.IndexReader reader)
{
return(m_srndQuery.GetSpanNearQuery(reader, m_fieldName, Boost, m_qf));
}
