public DocumentStorageWithFulltextSearch(IDocumentStorage <TDoc, TKey> storage, IStandaloneFulltextSearchEngine <TDoc, THeader, TKey> searchEngine)
{
Storage = storage;
SearchEngine = searchEngine;
SupportedStemmerNames = LuceneIndex.GetAvailableSnowballStemmers().ToList();
FulltextBackgroundTaskExecutor = new TaskExecutor();
}
public void OpenOrCreateIndexes(IEnumerable <string> stemmerNames, Action <double> progressReporter = null)
{
Check.DoRequireArgumentNotNull(stemmerNames, nameof(stemmerNames));
var languageNames = stemmerNames.ToCaseInsensitiveSet();
var allSupportedLangs = LuceneIndex.GetAvailableSnowballStemmers().ToCaseInsensitiveSet();
var unknownLangs = string.Join(",", languageNames.Where(n => !allSupportedLangs.Contains(n)));
if (!string.IsNullOrEmpty(unknownLangs))
{
throw new FulltextException($"The following configured languages are not supported: {unknownLangs}");
}
var newIndexes = new List <IndexInformation>();
foreach (var stemmerName in stemmerNames)
{
var info = SearchEngine.AddOrOpenSnowballIndex(stemmerName);
if (info.IsNew)
{
newIndexes.Add(info);
}
}
if (languageNames.Count > 1)
{
SearchEngine.SetDefaultIndex(stemmerNames.First());
}
if (newIndexes.Count > 0)
{
RebuildIndexes(newIndexes.Select(x => x.Name).ToArray(), progressReporter);
}
}