/// <summary>Pops segments off of segmentInfos stack down to minSegment, merges them,
/// and pushes the merged index onto the top of the segmentInfos stack.
/// </summary>
private void MergeSegments(int minSegment)
{
System.String mergedName = NewSegmentName();
if (infoStream != null)
{
infoStream.Write("merging segments");
}
SegmentMerger merger = new SegmentMerger(directory, mergedName, useCompoundFile);
System.Collections.ArrayList segmentsToDelete = System.Collections.ArrayList.Synchronized(new System.Collections.ArrayList(10));
for (int i = minSegment; i < segmentInfos.Count; i++)
{
SegmentInfo si = segmentInfos.Info(i);
if (infoStream != null)
{
infoStream.Write(" " + si.name + " (" + si.docCount + " docs)");
}
Monodoc.Lucene.Net.Index.IndexReader reader = new SegmentReader(si);
merger.Add(reader);
if ((reader.Directory() == this.directory) || (reader.Directory() == this.ramDirectory))
{
segmentsToDelete.Add(reader); // queue segment for deletion
}
}
int mergedDocCount = merger.Merge();
if (infoStream != null)
{
infoStream.WriteLine(" into " + mergedName + " (" + mergedDocCount + " docs)");
}
segmentInfos.RemoveRange(minSegment, segmentInfos.Count - minSegment); // pop old infos & add new
segmentInfos.Add(new SegmentInfo(mergedName, mergedDocCount, directory));
// close readers before we attempt to delete now-obsolete segments
merger.CloseReaders();
lock (directory)
{
// in- & inter-process sync
new AnonymousClassWith2(segmentsToDelete, this, directory.MakeLock(IndexWriter.COMMIT_LOCK_NAME), COMMIT_LOCK_TIMEOUT).Run();
}
}
/* Some operating systems (e.g. Windows) don't permit a file to be deleted
* while it is opened for read (e.g. by another process or thread). So we
* assume that when a delete fails it is because the file is open in another
* process, and queue the file for subsequent deletion. */
private void DeleteSegments(System.Collections.ArrayList segments)
{
System.Collections.ArrayList deletable = System.Collections.ArrayList.Synchronized(new System.Collections.ArrayList(10));
DeleteFiles(ReadDeleteableFiles(), deletable); // try to delete deleteable
for (int i = 0; i < segments.Count; i++)
{
SegmentReader reader = (SegmentReader)segments[i];
if (reader.Directory() == this.directory)
{
DeleteFiles(reader.Files(), deletable);
}
// try to delete our files
else
{
DeleteFiles(reader.Files(), reader.Directory()); // delete other files
}
}
WriteDeleteableFiles(deletable); // note files we can't delete
}
/// <summary>Pops segments off of segmentInfos stack down to minSegment, merges them,
/// and pushes the merged index onto the top of the segmentInfos stack.
/// </summary>
private void MergeSegments(int minSegment)
{
System.String mergedName = NewSegmentName();
if (infoStream != null)
infoStream.Write("merging segments");
SegmentMerger merger = new SegmentMerger(directory, mergedName, useCompoundFile);
System.Collections.ArrayList segmentsToDelete = System.Collections.ArrayList.Synchronized(new System.Collections.ArrayList(10));
for (int i = minSegment; i < segmentInfos.Count; i++)
{
SegmentInfo si = segmentInfos.Info(i);
if (infoStream != null)
infoStream.Write(" " + si.name + " (" + si.docCount + " docs)");
Monodoc.Lucene.Net.Index.IndexReader reader = new SegmentReader(si);
merger.Add(reader);
if ((reader.Directory() == this.directory) || (reader.Directory() == this.ramDirectory))
segmentsToDelete.Add(reader); // queue segment for deletion
}
int mergedDocCount = merger.Merge();
if (infoStream != null)
{
infoStream.WriteLine(" into " + mergedName + " (" + mergedDocCount + " docs)");
}
segmentInfos.RemoveRange(minSegment, segmentInfos.Count - minSegment); // pop old infos & add new
segmentInfos.Add(new SegmentInfo(mergedName, mergedDocCount, directory));
// close readers before we attempt to delete now-obsolete segments
merger.CloseReaders();
lock (directory)
{
// in- & inter-process sync
new AnonymousClassWith2(segmentsToDelete, this, directory.MakeLock(IndexWriter.COMMIT_LOCK_NAME), COMMIT_LOCK_TIMEOUT).Run();
}
}