public long GetTotalDocumentsInIndex()
{
// okay, open reader or searcher and get max docs
DirectoryInfo searchDirectory = null;
bool hasIndexFiles = false;
switch (index.IndexStructure)
{
case IndexType.SingleIndex:
IIndex singleIndex = (IIndex)index;
searchDirectory = singleIndex.IndexDirectory;
hasIndexFiles = singleIndex.HasIndexFiles();
break;
case IndexType.DoubleIndex:
case IndexType.CyclicalIndex:
IDoubleIndex doubleIndex = (IDoubleIndex)index;
searchDirectory = doubleIndex.GetReadDirectory();
hasIndexFiles = doubleIndex.HasIndexFiles();
break;
default:
throw new NotImplementedException(index.IndexStructure.ToString() + " not supported");
}
if (!hasIndexFiles)
{
return(-1L);
}
Lucene29.Net.Store.Directory directory = null;
Lucene29.Net.Search.IndexSearcher searcher = null;
try {
directory = Lucene29.Net.Store.FSDirectory.Open(searchDirectory);
searcher = new Lucene29.Net.Search.IndexSearcher(directory, true);
return(searcher.MaxDoc());
}
catch {
return(-2L);
}
finally {
if (searcher != null)
{
searcher.Close();
}
if (directory != null)
{
directory.Close();
}
}
}
/// <summary>
/// Outputs the directory of index files to read.
/// </summary>
/// <param name="index">The index to find the read directory for.</param>
/// <param name="info">out of the discovered index directory.</param>
/// <returns><c>true</c> if there are index files; otherwise, <c>false</c>.</returns>
private static bool GetIndexReadDirectory(IIndex index, out DirectoryInfo info)
{
switch (index.IndexStructure)
{
case IndexType.SingleIndex:
IIndex singleIndex = (IIndex)index;
info = singleIndex.IndexDirectory;
return(singleIndex.HasIndexFiles());
case IndexType.DoubleIndex:
case IndexType.CyclicalIndex:
IDoubleIndex doubleIndex = (IDoubleIndex)index;
info = doubleIndex.GetReadDirectory();
return(doubleIndex.HasIndexFiles());
default:
throw new NotImplementedException(index.IndexStructure.ToString() + " not supported");
}
}