public override int DoHighlight(IndexReader reader, int doc, string field, Document document, Analyzer analyzer, string text)
{
FieldQuery fq = highlighter.GetFieldQuery(myq, reader);
string[] fragments = highlighter.GetBestFragments(fq, reader, doc, field, outerInstance.m_fragSize, outerInstance.m_maxFrags);
return(fragments != null ? fragments.Length : 0);
}
private Dictionary <string, Dictionary <string, string[]> > GetHighlighterResults(IndexQueryServerSide query, IndexSearcher searcher, ScoreDoc scoreDoc, Document document, global::Lucene.Net.Documents.Document luceneDocument, JsonOperationContext context)
{
Debug.Assert(_highlighter != null);
Debug.Assert(_highlighterQuery != null);
var results = new Dictionary <string, Dictionary <string, string[]> >();
foreach (var highlighting in query.Metadata.Highlightings)
{
var fieldName = highlighting.Field.Value;
var indexFieldName = query.Metadata.IsDynamic
? AutoIndexField.GetSearchAutoIndexFieldName(fieldName)
: fieldName;
var fragments = _highlighter.GetBestFragments(
_highlighterQuery,
searcher.IndexReader,
scoreDoc.Doc,
indexFieldName,
highlighting.FragmentLength,
highlighting.FragmentCount,
_state);
if (fragments == null || fragments.Length == 0)
{
continue;
}
var options = highlighting.GetOptions(context, query.QueryParameters);
string key;
if (options != null && string.IsNullOrWhiteSpace(options.GroupKey) == false)
{
key = luceneDocument.Get(options.GroupKey, _state);
}
else
{
key = document.Id;
}
if (results.TryGetValue(fieldName, out var result) == false)
{
results[fieldName] = result = new Dictionary <string, string[]>();
}
if (result.TryGetValue(key, out var innerResult))
{
Array.Resize(ref innerResult, innerResult.Length + fragments.Length);
Array.Copy(fragments, 0, innerResult, innerResult.Length, fragments.Length);
}
else
{
result[key] = fragments;
}
}
return(results);
}
public static IEnumerable <SearchResult> Search(
string queryString,
out int totalResults,
int maxResults = 100)
{
totalResults = 0;
if (string.IsNullOrEmpty(queryString))
{
return(new List <SearchResult>());
}
var indexReader = DirectoryReader.Open(
directory: Index,
readOnly: true);
var indexSearcher = new IndexSearcher(indexReader);
var queryParser = new QueryParser(
Lucene.Net.Util.Version.LUCENE_30,
"Body",
Analyzer
);
queryParser.AllowLeadingWildcard = true;
queryParser.DefaultOperator = QueryParser.Operator.AND;
var query = queryParser.Parse(queryString);
var resultsCollector = TopScoreDocCollector.Create(
numHits: maxResults,
docsScoredInOrder: true
);
indexSearcher.Search(
query: query,
results: resultsCollector
);
totalResults = resultsCollector.TotalHits;
var result = new List <SearchResult>();
var fvh = new FastVectorHighlighter();
var fq = fvh.GetFieldQuery(query);
foreach (var scoreDoc in resultsCollector.TopDocs().ScoreDocs)
{
string[] fragments = fvh.GetBestFragments(fq, indexSearcher.IndexReader, scoreDoc.Doc, "Body", 100, 5);
var doc = indexSearcher.Doc(scoreDoc.Doc);
var searchResult = new SearchResult(
type: doc.Get("Type"),
id: doc.Get("ID"),
snippets: fragments
);
result.Add(searchResult);
}
return(result);
}
public IEnumerable <SearchResult> Search(
string queryString,
string context,
string subContext,
out int totalResults,
int maxResults)
{
totalResults = 0;
queryString = (queryString ?? "").Replace(":", " ");
if (string.IsNullOrWhiteSpace(queryString))
{
return(new List <SearchResult>());
}
queryString = AddContextCriteria(queryString, context, subContext);
IndexSearcher indexSearcher = SearcherProvider.GetIndexSearcher();
var analyser = AnalyzerProvider.GetAnalyzer();
var queryParser = new QueryParser(
Lucene.Net.Util.Version.LUCENE_30,
Consts.FullTextFieldName,
analyser);
queryParser.AllowLeadingWildcard = true;
queryParser.DefaultOperator = QueryParser.Operator.AND;
var query = queryParser.Parse(queryString);
var resultsCollector = TopScoreDocCollector.Create(
numHits: 9999,
docsScoredInOrder: true
);
indexSearcher.Search(
query: query,
results: resultsCollector
);
totalResults = resultsCollector.TotalHits;
var result = new List <SearchResult>();
var highlighter = new FastVectorHighlighter();
var fieldQuery = highlighter.GetFieldQuery(query);
foreach (var scoreDoc in resultsCollector.TopDocs().ScoreDocs.Take(maxResults))
{
string[] fragments = highlighter.GetBestFragments(
fieldQuery: fieldQuery,
reader: indexSearcher.IndexReader,
docId: scoreDoc.Doc,
fieldName: Consts.FullTextFieldName,
fragCharSize: 100,
maxNumFragments: 5);
var doc = indexSearcher.Doc(scoreDoc.Doc);
var searchResult = new SearchResult(
type: doc.Get(Consts.SerializedObjectTypeFieldName),
document: doc,
snippets: fragments
);
result.Add(searchResult);
}
return(result);
}