public IEnumerable <LogEntry> Filter(string queryString, ViewFilter view, int count, Direction direction, ulong?referenceId, out int totalCount)
{
var context = new IncermentalSearchContext(count, direction, referenceId);
var parser = new CustomQueryParser(LuceneNet.Util.Version.LUCENE_30, MessageFieldName, analyzer);
var sortBy = new Sort(new SortField(IdFieldName, SortField.LONG, direction == Direction.Backward));
while (true)
{
var combinedQueryString = Searcher.CombineQuery(queryString, view, context.Range);
if (combinedQueryString.Length == 0)
{
totalCount = 0;
return(new LogEntry[0]);
}
var query = parser.Parse(combinedQueryString);
lock (searcherLock)
{
var searchResults = searcher.Search(query, null, count, sortBy);
totalCount = searchResults.TotalHits;
var result = searchResults.ScoreDocs.Take(count).Select(d => searcher.Doc(d.Doc)).Select(x => converter.ToLogEntry(x));
context.UpdateResult(result);
if (context.IsFinished)
{
return((direction == Direction.Backward) ? context.Result.Reverse() : context.Result);
}
context.UpdateRange();
}
}
}
private ulong?FindFirstId(string queryString, ViewFilter view, Direction direction, ulong?referenceId, out int totalCount)
{
if (direction == Direction.Backward)
{
if (referenceId.HasValue && referenceId.Value > 0)
{
referenceId--;
}
}
else
{
if (referenceId.HasValue && referenceId.Value < ulong.MaxValue)
{
referenceId++;
}
}
var context = new IncermentalSearchContext(1, direction, referenceId);
while (true)
{
var combinedQueryString = Searcher.CombineQuery(queryString, view, context.Range);
if (combinedQueryString.Length == 0)
{
totalCount = 0;
return(null);
}
var parser = new CustomQueryParser(LuceneNet.Util.Version.LUCENE_30, MessageFieldName, analyzer);
var query = parser.Parse(combinedQueryString);
var sortBy = new Sort(new SortField(IdFieldName, SortField.LONG, direction == Direction.Backward));
lock (searcherLock)
{
var searchResults = searcher.Search(query, null, 1, sortBy);
var firstResult = searchResults.ScoreDocs.FirstOrDefault();
totalCount = searchResults.TotalHits;
if (firstResult != null)
{
return(converter.ToLogEntry(searcher.Doc(firstResult.Doc)).Id);
}
if (context.IsFinished)
{
return(null);
}
context.UpdateRange();
}
}
}