public FieldTermStack(IndexReader reader, int docId, String fieldName, FieldQuery fieldQuery)
{
this.fieldName = fieldName;
TermFreqVector tfv = reader.GetTermFreqVector(docId, fieldName);
if (tfv == null)
{
return; // just return to make null snippets
}
TermPositionVector tpv = null;
try
{
tpv = (TermPositionVector)tfv;
}
catch (InvalidCastException e)
{
return; // just return to make null snippets
}
List <String> termSet = fieldQuery.getTermSet(fieldName);
// just return to make null snippet if un-matched fieldName specified when fieldMatch == true
if (termSet == null)
{
return;
}
foreach (String term in tpv.GetTerms())
{
if (!termSet.Contains(term))
{
continue;
}
int index = tpv.IndexOf(term);
TermVectorOffsetInfo[] tvois = tpv.GetOffsets(index);
if (tvois == null)
{
return; // just return to make null snippets
}
int[] poss = tpv.GetTermPositions(index);
if (poss == null)
{
return; // just return to make null snippets
}
for (int i = 0; i < tvois.Length; i++)
{
termList.AddLast(new TermInfo(term, tvois[i].GetStartOffset(), tvois[i].GetEndOffset(), poss[i]));
}
}
// sort by position
//Collections.sort(termList);
Sort(termList);
}
private static List <DataForIndex> getResult(List <DataForIndex> dfi, ScoreDoc[] hits, string term, IndexSearcher searcher, Query query, MultiFieldQueryParser parser)
{
if (hits.Length == 0)
{
term = searchByPartialWords(term);
query = parseQuery(term, parser);
hits = searcher.Search(query, 100).ScoreDocs;
}
foreach (var scoreDoc in hits)
{
var doc = searcher.Doc(scoreDoc.Doc);
var score = scoreDoc.Score;
DataForIndex listdata = new DataForIndex();
listdata.ID = int.Parse(doc.Get("ID"));
listdata.FileName = doc.Get("FileName");
listdata.SearchWord = term;
listdata.FileExtension = doc.Get("FileExtension");
listdata.AudioGenre = doc.Get("AudioGenre");
listdata.AudioAlbum = doc.Get("AudioAlbum");
listdata.AudioBitrate = doc.Get("AudioBitrate");
listdata.AudioDuration = doc.Get("AudioDuration");
listdata.Label = doc.Get("Label");
if (isFarsiArabic)
{
listdata.IsFarsiArabic = true;
listdata.HarfArabic = HarfArabic;
listdata.HarfFarsi = HarfFarsi;
}
listdata.Score = score;
TermPositionVector obj_vector =
(TermPositionVector)searcher.IndexReader.GetTermFreqVector(scoreDoc.Doc, "Body");
int int_phraseIndex = obj_vector.IndexOf(term.Split(' ').FirstOrDefault());
TermVectorOffsetInfo[] obj_offsetInfo = obj_vector.GetOffsets(int_phraseIndex);
StringBuilder text = new StringBuilder();
for (int i = 0; i < obj_offsetInfo.Length; i++)
{
string body = doc.Get("Body");
int start = obj_offsetInfo[i].StartOffset;
int end = body.Length;
int count = 100;
if (start + count <= end)
{
end = start + count;
}
if (start > count)
{
start = start - count;
}
else
{
start = 0;
}
text.Append(body.Substring(start, end - start) + " # ");
}
listdata.ResultText = text.ToString();
if (dfi.FirstOrDefault(x => x.FileName == listdata.FileName) == null)
{
dfi.Add(listdata);
}
else
{
var del = dfi.FirstOrDefault(x => x.FileName == listdata.FileName);
dfi.Remove(del);
del.SearchWord = del.SearchWord + " + " + listdata.SearchWord;
del.ResultText = del.ResultText + " " + listdata.ResultText;
dfi.Add(del);
}
}
return(dfi);
}
public FieldTermStack(IndexReader reader, int docId, String fieldName, FieldQuery fieldQuery, IState state)
{
this.fieldName = fieldName;
var tfv = reader.GetTermFreqVector(docId, fieldName, state);
if (tfv == null)
{
return; // just return to make null snippets
}
TermPositionVector tpv = null;
try
{
tpv = (TermPositionVector)tfv;
}
catch (InvalidCastException)
{
return; // just return to make null snippets
}
List <String> termSet = fieldQuery.getTermSet(fieldName);
// just return to make null snippet if un-matched fieldName specified when fieldMatch == true
if (termSet == null)
{
return;
}
var needwildcard = termSet.Any(x => x.IndexOfAny(new char[] { '*', '?' }) != -1);
foreach (String term in tpv.GetTerms())
{
if (needwildcard)
{
if (termSet.Any(ts => WildcardMatcher.Matches(ts, term)) == false)
{
continue;
}
}
else if (!termSet.Contains(term))
{
continue;
}
int index = tpv.IndexOf(term);
TermVectorOffsetInfo[] tvois = tpv.GetOffsets(index);
if (tvois == null)
{
return; // just return to make null snippets
}
int[] poss = tpv.GetTermPositions(index);
if (poss == null)
{
return; // just return to make null snippets
}
for (int i = 0; i < tvois.Length; i++)
{
termList.AddLast(new TermInfo(term, tvois[i].StartOffset, tvois[i].EndOffset, poss[i]));
}
}
// sort by position
//Collections.sort(termList);
Sort(termList);
}
