/// <summary> Adds a document to this index, using the provided culture.
/// If the document contains more than
/// {@link #SetMaxFieldLength(int)} terms for a given field, the remainder are
/// discarded.
/// </summary>
/// <exception cref="InvalidOperationException">If the index is closed </exception>
private void AddMultipleDocuments(Document[] docs, string culture)
{
if (docs == null || docs.Length == 0)
{
return;
}
Analyzer analyzer = null;
if (!string.IsNullOrEmpty(culture))
{
analyzer = LuceneSearch.GetAnalyzer(culture);
}
#if TRACE_INDEX_OPS
_log.Info("Add multiple IndexDoc(s)...");
#endif
lock (SyncRoot)
{
AssureOpen();
CreateIndexWriter();
for (int i = 0; i < docs.Length; i++)
{
if (analyzer != null)
{
indexWriter.AddDocument(docs[i], analyzer);
}
else
{
indexWriter.AddDocument(docs[i]);
}
}
}
}
/// <summary> Initialize an IndexWriter.</summary>
/// <exception cref="IOException"></exception>
protected internal void Init()
{
lock (this.SyncRoot) {
this.indexWriter = new IndexWriter(this.settings.GetIndexDirectory(),
LuceneSearch.GetAnalyzer(LuceneSearch.DefaultLanguage), !this.IndexExists);
open = true;
}
}
/// <summary> Adds a document to this index, using the provided culture.
/// If the document contains more than
/// {@link #SetMaxFieldLength(int)} terms for a given field, the remainder are
/// discarded.
/// </summary>
/// <exception cref="InvalidOperationException">If the index is closed </exception>
private void AddSingleDocument(Document doc, string culture)
{
if (doc == null)
{
return;
}
//#if TRACE_INDEX_OPS
_log.DebugFormat("Adding document {0} to the index", doc.GetField(LuceneSearch.Keyword.ItemLink));
//#endif
lock (SyncRoot)
{
AssureOpen();
CreateIndexWriter();
try
{
if (!string.IsNullOrEmpty(culture))
{
indexWriter.AddDocument(doc, LuceneSearch.GetAnalyzer(culture));
}
else
{
indexWriter.AddDocument(doc);
}
}
catch (IOException ioe)
{
_log.Error("IOException adding document to the index", ioe);
/* see http://issues.apache.org/jira/browse/LUCENE-665 */
if (ioe.Message.IndexOf("segments.new") != -1)
{
FileHelper.MoveFile(Path.Combine(this.settings.IndexPath, "segments.new"), Path.Combine(this.settings.IndexPath, "segments"), MoveFileFlag.ReplaceExisting);
}
else if (ioe.Message.IndexOf("deleteable.new") != -1)
{
FileHelper.MoveFile(Path.Combine(this.settings.IndexPath, "deleteable.new"), Path.Combine(this.settings.IndexPath, "deleteable"), MoveFileFlag.ReplaceExisting);
}
}
catch (UnauthorizedAccessException uae)
{
_log.Error("Access denied error while adding document to the index", uae);
/* see http://issues.apache.org/jira/browse/LUCENE-665 */
if (uae.Message.IndexOf("segments.new") != -1)
{
FileHelper.MoveFile(Path.Combine(this.settings.IndexPath, "segments.new"), Path.Combine(this.settings.IndexPath, "segments"), MoveFileFlag.ReplaceExisting);
}
else if (uae.Message.IndexOf("deleteable.new") != -1)
{
FileHelper.MoveFile(Path.Combine(this.settings.IndexPath, "deleteable.new"), Path.Combine(this.settings.IndexPath, "deleteable"), MoveFileFlag.ReplaceExisting);
}
}
catch (SystemException se) //indicates "docs out of order" when trying to merge docs in index
{
_log.Error("Non-fatal error occured while adding document to index", se);
}
}
}
/// <summary> Close the IndexReader and open an IndexWriter.</summary>
/// <exception cref="IOException"></exception>
protected internal virtual void CreateIndexWriter()
{
if (this.indexWriter == null)
{
#if TRACE_INDEX_OPS
_log.Info("Creating IndexWriter...");
#endif
this.indexWriter = new IndexWriter(this.BaseDirectory,
LuceneSearch.GetAnalyzer(LuceneSearch.DefaultLanguage), false);
this.indexWriter.SetInfoStream(_logHelper);
this.indexWriter.SetMergeFactor(MaxSegments);
this.indexWriter.SetMaxBufferedDocs(DocsPerSegment);
this.indexWriter.SetMergeScheduler(new NoExceptionsConcurrentMergeScheduler());
}
}
