private IList <EntityInfo> ExtractEntityInfos(IndexSearcher searcher)
{
TopDocs hits = GetTopDocs(searcher);
SetResultSize(hits);
int first = First();
int max = Max(first, hits);
int size = Math.Max(0, max - first + 1);
IList <EntityInfo> infos = new List <EntityInfo>(size);
if (size <= 0)
{
return(infos);
}
DocumentExtractor extractor = new DocumentExtractor(SearchFactory, indexProjection);
for (int index = first; index <= max; index++)
{
//TODO use indexSearcher.getIndexReader().document( hits.id(index), FieldSelector(indexProjection) );
infos.Add(extractor.Extract(hits, searcher, index));
}
return(infos);
}
/// <summary>
/// Return an interator on the results.
/// Retrieve the object one by one (initialize it during the next() operation)
/// </summary>
public override IEnumerable <T> Enumerable <T>()
{
using (new SessionIdLoggingContext(Session.SessionId))
{
//implement an interator which keep the id/class for each hit and get the object on demand
//cause I can't keep the searcher and hence the hit opened. I dont have any hook to know when the
//user stop using it
//scrollable is better in this area
//find the directories
IndexSearcher searcher = BuildSearcher();
if (searcher == null)
{
return(new IteratorImpl <T>(new List <EntityInfo>(), noLoader).Iterate());
}
try
{
var topDocs = GetTopDocs(searcher);
SetResultSize(topDocs);
int first = First();
int max = Max(first, topDocs);
int size = max - first + 1 < 0 ? 0 : max - first + 1;
IList <EntityInfo> infos = new List <EntityInfo>(size);
DocumentExtractor extractor = new DocumentExtractor(SearchFactory, indexProjection);
for (int index = first; index <= max; index++)
{
//TODO use indexSearcher.getIndexReader().document( hits.id(index), FieldSelector(indexProjection) );
infos.Add(extractor.Extract(topDocs, searcher, index));
}
return(new IteratorImpl <T>(infos, this.GetLoader((ISession)Session)).Iterate());
}
catch (IOException e)
{
throw new HibernateException("Unable to query Lucene index", e);
}
finally
{
CloseSearcher(searcher);
}
}
}
