// next without initial increment
private bool DoNext()
{
while (more)
{
while (more && first.doc < last.doc)
{
// find doc w/ all the terms
more = first.SkipTo(last.doc); // skip first upto last
FirstToLast(); // and move it to the end
}
if (more)
{
// found a doc with all of the terms
freq = PhraseFreq(); // check for phrase
if (freq == 0.0f)
{
// no match
more = last.Next();
}
// trigger further scanning
else
{
return(true); // found a match
}
}
}
return(false); // no more matches
}
// private void printQueue(PrintStream ps, PhrasePositions ext, String title) {
// //if (min.doc != ?) return;
// ps.println();
// ps.println("---- "+title);
// ps.println("EXT: "+ext);
// PhrasePositions[] t = new PhrasePositions[pq.size()];
// if (pq.size()>0) {
// t[0] = pq.pop();
// ps.println(" " + 0 + " " + t[0]);
// for (int i=1; i<t.length; i++) {
// t[i] = pq.pop();
// assert t[i-1].position <= t[i].position;
// ps.println(" " + i + " " + t[i]);
// }
// // add them back
// for (int i=t.length-1; i>=0; i--) {
// pq.add(t[i]);
// }
// }
// }
private bool AdvanceMin(int target)
{
if (!min.SkipTo(target))
{
max.doc = NO_MORE_DOCS; // for further calls to docID()
return(false);
}
min = min.next; // cyclic
max = max.next; // cyclic
return(true);
}
// private void printQueue(PrintStream ps, PhrasePositions ext, String title) {
// //if (min.doc != ?) return;
// ps.println();
// ps.println("---- "+title);
// ps.println("EXT: "+ext);
// PhrasePositions[] t = new PhrasePositions[pq.size()];
// if (pq.size()>0) {
// t[0] = pq.pop();
// ps.println(" " + 0 + " " + t[0]);
// for (int i=1; i<t.length; i++) {
// t[i] = pq.pop();
// assert t[i-1].position <= t[i].position;
// ps.println(" " + i + " " + t[i]);
// }
// // add them back
// for (int i=t.length-1; i>=0; i--) {
// pq.add(t[i]);
// }
// }
// }
private bool AdvanceMin(int target)
{
if (!Min.SkipTo(target))
{
Max.Doc = NO_MORE_DOCS; // for further calls to docID()
return(false);
}
Min = Min.next; // cyclic
Max = Max.next; // cyclic
return(true);
}
public override bool SkipTo(int target)
{
for (PhrasePositions pp = first; more && pp != null; pp = pp.next)
{
more = pp.SkipTo(target);
}
if (more)
{
Sort(); // re-sort
}
return(DoNext());
}
public override int Advance(int target)
{
firstTime = false;
for (PhrasePositions pp = first; more && pp != null; pp = pp.next)
{
more = pp.SkipTo(target);
}
if (more)
{
Sort(); // re-sort
}
if (!DoNext())
{
first.doc = NO_MORE_DOCS;
}
return(first.doc);
}