public WeightedPhraseInfo(LinkedList <TermInfo> terms, float boost, int number)
{
this.boost = boost;
this.seqnum = number;
termsOffsets = new List <Toffs>(terms.Count);
TermInfo ti = terms.First.Value;
termsOffsets.Add(new Toffs(ti.GetStartOffset(), ti.GetEndOffset()));
if (terms.Count == 1)
{
text = ti.GetText();
return;
}
StringBuilder sb = new StringBuilder();
sb.Append(ti.GetText());
int pos = ti.GetPosition();
bool dummy = true;
foreach (TermInfo ti2 in terms)
//for (int i = 1; i < terms.Count; i++)
{
if (dummy)
{
dummy = false; continue;
} //Skip First Item {{DIGY}}
ti = ti2;
//ti = terms.get(i);
sb.Append(ti.GetText());
if (ti.GetPosition() - pos == 1)
{
Toffs to = termsOffsets[termsOffsets.Count - 1];
to.SetEndOffset(ti.GetEndOffset());
}
else
{
termsOffsets.Add(new Toffs(ti.GetStartOffset(), ti.GetEndOffset()));
}
pos = ti.GetPosition();
}
text = sb.ToString();
}
/// <summary>
/// a constructor.
/// </summary>
/// <param name="fieldTermStack">FieldTermStack object</param>
/// <param name="fieldQuery">FieldQuery object</param>
public FieldPhraseList(FieldTermStack fieldTermStack, FieldQuery fieldQuery)
{
String field = fieldTermStack.GetFieldName();
LinkedList <TermInfo> phraseCandidate = new LinkedList <TermInfo>();
QueryPhraseMap currMap = null;
QueryPhraseMap nextMap = null;
while (!fieldTermStack.IsEmpty())
{
phraseCandidate.Clear();
TermInfo ti = fieldTermStack.Pop();
currMap = fieldQuery.GetFieldTermMap(field, ti.GetText());
// if not found, discard top TermInfo from stack, then try next element
if (currMap == null)
{
continue;
}
// if found, search the longest phrase
phraseCandidate.AddLast(ti);
while (true)
{
ti = fieldTermStack.Pop();
nextMap = null;
if (ti != null)
{
nextMap = currMap.GetTermMap(ti.GetText());
}
if (ti == null || nextMap == null)
{
if (ti != null)
{
fieldTermStack.Push(ti);
}
if (currMap.IsValidTermOrPhrase(new List <TermInfo>(phraseCandidate)))
{
AddIfNoOverlap(new WeightedPhraseInfo(phraseCandidate, currMap.GetBoost(), currMap.GetTermOrPhraseNumber()));
}
else
{
while (phraseCandidate.Count > 1)
{
TermInfo last = phraseCandidate.Last.Value;
phraseCandidate.RemoveLast();
fieldTermStack.Push(last);
currMap = fieldQuery.SearchPhrase(field, new List <TermInfo>(phraseCandidate));
if (currMap != null)
{
AddIfNoOverlap(new WeightedPhraseInfo(phraseCandidate, currMap.GetBoost(), currMap.GetTermOrPhraseNumber()));
break;
}
}
}
break;
}
else
{
phraseCandidate.AddLast(ti);
currMap = nextMap;
}
}
}
}
