public System.Object Clone()
{
SegmentTermEnum clone = null;
try
{
clone = (SegmentTermEnum)base.MemberwiseClone();
}
catch (System.Exception)
{
}
clone.input = (InputStream)input.Clone();
clone.termInfo = new TermInfo(termInfo);
if (term != null)
{
clone.GrowBuffer(term.text.Length);
}
return(clone);
}
/// <summary>Optimized implementation. </summary>
public virtual bool SkipTo(int target)
{
if (df >= skipInterval)
{
// optimized case
if (skipStream == null)
{
skipStream = (InputStream)freqStream.Clone(); // lazily clone
}
if (!haveSkipped)
{
// lazily seek skip stream
skipStream.Seek(skipPointer);
haveSkipped = true;
}
// scan skip data
int lastSkipDoc = skipDoc;
long lastFreqPointer = freqStream.GetFilePointer();
long lastProxPointer = -1;
int numSkipped = -1 - (count % skipInterval);
while (target > skipDoc)
{
lastSkipDoc = skipDoc;
lastFreqPointer = freqPointer;
lastProxPointer = proxPointer;
if (skipDoc != 0 && skipDoc >= doc)
{
numSkipped += skipInterval;
}
if (skipCount >= numSkips)
{
break;
}
skipDoc += skipStream.ReadVInt();
freqPointer += skipStream.ReadVInt();
proxPointer += skipStream.ReadVInt();
skipCount++;
}
// if we found something to skip, then skip it
if (lastFreqPointer > freqStream.GetFilePointer())
{
freqStream.Seek(lastFreqPointer);
SkipProx(lastProxPointer);
doc = lastSkipDoc;
count += numSkipped;
}
}
// done skipping, now just scan
do
{
if (!Next())
{
return(false);
}
}while (target > doc);
return(true);
}
