public override int Advance(int target)
{
// TODO: make frq block load lazy/skippable
// if (DEBUG) {
// System.out.println(" FPR.advance target=" + target);
// }
// current skip docID < docIDs generated from current buffer <= next skip docID
// we don't need to skip if target is buffered already
if (DocFreq > Lucene41PostingsFormat.BLOCK_SIZE && target > NextSkipDoc)
{
// if (DEBUG) {
// System.out.println("load skipper");
// }
if (Skipper == null)
{
// Lazy init: first time this enum has ever been used for skipping
Skipper = new Lucene41SkipReader((IndexInput)DocIn.Clone(), Lucene41PostingsWriter.MaxSkipLevels, Lucene41PostingsFormat.BLOCK_SIZE, IndexHasPos, IndexHasOffsets, IndexHasPayloads);
}
if (!Skipped)
{
Debug.Assert(SkipOffset != -1);
// this is the first time this enum has skipped
// since reset() was called; load the skip data:
Skipper.Init(DocTermStartFP + SkipOffset, DocTermStartFP, 0, 0, DocFreq);
Skipped = true;
}
// always plus one to fix the result, since skip position in Lucene41SkipReader
// is a little different from MultiLevelSkipListReader
int newDocUpto = Skipper.SkipTo(target) + 1;
if (newDocUpto > DocUpto)
{
// Skipper moved
// if (DEBUG) {
// System.out.println("skipper moved to docUpto=" + newDocUpto + " vs current=" + docUpto + "; docID=" + skipper.getDoc() + " fp=" + skipper.getDocPointer());
// }
Debug.Assert(newDocUpto % Lucene41PostingsFormat.BLOCK_SIZE == 0, "got " + newDocUpto);
DocUpto = newDocUpto;
// Force to read next block
DocBufferUpto = Lucene41PostingsFormat.BLOCK_SIZE;
Accum = Skipper.Doc; // actually, this is just lastSkipEntry
DocIn.Seek(Skipper.DocPointer); // now point to the block we want to search
}
// next time we call advance, this is used to
// foresee whether skipper is necessary.
NextSkipDoc = Skipper.NextSkipDoc;
}
if (DocUpto == DocFreq)
{
return Doc = NO_MORE_DOCS;
}
if (DocBufferUpto == Lucene41PostingsFormat.BLOCK_SIZE)
{
RefillDocs();
}
// Now scan... this is an inlined/pared down version
// of nextDoc():
while (true)
{
// if (DEBUG) {
// System.out.println(" scan doc=" + accum + " docBufferUpto=" + docBufferUpto);
// }
Accum += DocDeltaBuffer[DocBufferUpto];
DocUpto++;
if (Accum >= target)
{
break;
}
DocBufferUpto++;
if (DocUpto == DocFreq)
{
return Doc = NO_MORE_DOCS;
}
}
if (LiveDocs == null || LiveDocs.Get(Accum))
{
// if (DEBUG) {
// System.out.println(" return doc=" + accum);
// }
Freq_Renamed = FreqBuffer[DocBufferUpto];
DocBufferUpto++;
return Doc = Accum;
}
else
{
// if (DEBUG) {
// System.out.println(" now do nextDoc()");
// }
DocBufferUpto++;
return NextDoc();
}
}
public override int Advance(int target)
{
// TODO: make frq block load lazy/skippable
// if (DEBUG) {
// System.out.println(" FPR.advance target=" + target);
// }
if (DocFreq > Lucene41PostingsFormat.BLOCK_SIZE && target > NextSkipDoc)
{
// if (DEBUG) {
// System.out.println(" try skipper");
// }
if (Skipper == null)
{
// Lazy init: first time this enum has ever been used for skipping
// if (DEBUG) {
// System.out.println(" create skipper");
// }
Skipper = new Lucene41SkipReader((IndexInput)DocIn.Clone(), Lucene41PostingsWriter.MaxSkipLevels, Lucene41PostingsFormat.BLOCK_SIZE, true, IndexHasOffsets, IndexHasPayloads);
}
if (!Skipped)
{
Debug.Assert(SkipOffset != -1);
// this is the first time this enum has skipped
// since reset() was called; load the skip data:
// if (DEBUG) {
// System.out.println(" init skipper");
// }
Skipper.Init(DocTermStartFP + SkipOffset, DocTermStartFP, PosTermStartFP, PayTermStartFP, DocFreq);
Skipped = true;
}
int newDocUpto = Skipper.SkipTo(target) + 1;
if (newDocUpto > DocUpto)
{
// Skipper moved
// if (DEBUG) {
// System.out.println(" skipper moved to docUpto=" + newDocUpto + " vs current=" + docUpto + "; docID=" + skipper.getDoc() + " fp=" + skipper.getDocPointer() + " pos.fp=" + skipper.getPosPointer() + " pos.bufferUpto=" + skipper.getPosBufferUpto());
// }
Debug.Assert(newDocUpto % Lucene41PostingsFormat.BLOCK_SIZE == 0, "got " + newDocUpto);
DocUpto = newDocUpto;
// Force to read next block
DocBufferUpto = Lucene41PostingsFormat.BLOCK_SIZE;
Accum = Skipper.Doc;
DocIn.Seek(Skipper.DocPointer);
PosPendingFP = Skipper.PosPointer;
PosPendingCount = Skipper.PosBufferUpto;
}
NextSkipDoc = Skipper.NextSkipDoc;
}
if (DocUpto == DocFreq)
{
return Doc = NO_MORE_DOCS;
}
if (DocBufferUpto == Lucene41PostingsFormat.BLOCK_SIZE)
{
RefillDocs();
}
// Now scan... this is an inlined/pared down version
// of nextDoc():
while (true)
{
// if (DEBUG) {
// System.out.println(" scan doc=" + accum + " docBufferUpto=" + docBufferUpto);
// }
Accum += DocDeltaBuffer[DocBufferUpto];
Freq_Renamed = FreqBuffer[DocBufferUpto];
PosPendingCount += Freq_Renamed;
DocBufferUpto++;
DocUpto++;
if (Accum >= target)
{
break;
}
if (DocUpto == DocFreq)
{
return Doc = NO_MORE_DOCS;
}
}
if (LiveDocs == null || LiveDocs.Get(Accum))
{
// if (DEBUG) {
// System.out.println(" return doc=" + accum);
// }
Position = 0;
return Doc = Accum;
}
else
{
// if (DEBUG) {
// System.out.println(" now do nextDoc()");
// }
return NextDoc();
}
}
