public DocumentStorageWithFulltextSearch(IDocumentStorage <TDoc, TKey> storage, IStandaloneFulltextSearchEngine <TDoc, THeader, TKey> searchEngine)
{
Storage = storage;
SearchEngine = searchEngine;
SupportedStemmerNames = LuceneIndex.GetAvailableSnowballStemmers().ToList();
FulltextBackgroundTaskExecutor = new TaskExecutor();
}
/// <summary>
/// Sets index as default if it's the first one.
/// </summary>
/// <param name="name">
/// Index name translated into name of the folder under FT catalog directory
/// </param>
/// <param name="analyzer">
/// </param>
/// <param name="dropExisting">
/// Whether to drop existing index if exists
/// </param>
/// <returns>
/// The new index
/// </returns>
public IndexInformation AddOrOpenIndex(string name, Analyzer analyzer, bool dropExisting = false)
{
Check.DoCheckArgument(MultiIndex.GetIndex(name) == null, () => "Index already open");
Check.DoRequireArgumentNotBlank(name, nameof(name));
Check.DoRequireArgumentNotNull(analyzer, nameof(analyzer));
var result = new IndexInformation(name);
var indexDirectoryPath = GetIndexRootFolder(name);
var dirInfo = new DirectoryInfo(indexDirectoryPath);
result.IsNew = !dirInfo.Exists;
if (!result.IsNew)
{
dirInfo.Create();
}
else if (dropExisting)
{
dirInfo.Delete(true);
}
var luceneDir = LuceneIndex.PreparePersistentDirectory(indexDirectoryPath);
var newIndex = new LuceneIndex(indexDirectoryPath, analyzer, luceneDir, EntityAdapter.DocumentKeyName);
MultiIndex.AddIndex(name, newIndex);
if (MultiIndex.IndexCount == 1)
{
SetDefaultIndex(name);
}
return(result);
}
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);
}
}
public IndexInformation AddOrOpenSnowballIndex(string snowballStemmerName)
{
var analyzer = LuceneIndex.CreateSnowballAnalyzer(snowballStemmerName);
return(AddOrOpenIndex(snowballStemmerName, analyzer, false));
}
