// maxAllowed = the "highest" we can index, but we will still
// randomly index at lower IndexOption
private FieldsProducer BuildIndex(Directory dir, FieldInfo.IndexOptions maxAllowed, bool allowPayloads, bool alwaysTestMax)
{
Codec codec = Codec;
SegmentInfo segmentInfo = new SegmentInfo(dir, Constants.LUCENE_MAIN_VERSION, "_0", MaxDoc, false, codec, null);
int maxIndexOption = Enum.GetValues(typeof(FieldInfo.IndexOptions)).Cast<FieldInfo.IndexOptions>().ToList().IndexOf(maxAllowed);
if (VERBOSE)
{
Console.WriteLine("\nTEST: now build index");
}
int maxIndexOptionNoOffsets = Enum.GetValues(typeof(FieldInfo.IndexOptions)).Cast<FieldInfo.IndexOptions>().ToList().IndexOf(FieldInfo.IndexOptions.DOCS_AND_FREQS_AND_POSITIONS);
// TODO use allowPayloads
var newFieldInfoArray = new FieldInfo[Fields.Count];
for (int fieldUpto = 0; fieldUpto < Fields.Count; fieldUpto++)
{
FieldInfo oldFieldInfo = FieldInfos.FieldInfo(fieldUpto);
string pf = TestUtil.GetPostingsFormat(codec, oldFieldInfo.Name);
int fieldMaxIndexOption;
if (DoesntSupportOffsets.Contains(pf))
{
fieldMaxIndexOption = Math.Min(maxIndexOptionNoOffsets, maxIndexOption);
}
else
{
fieldMaxIndexOption = maxIndexOption;
}
// Randomly picked the IndexOptions to index this
// field with:
FieldInfo.IndexOptions indexOptions = Enum.GetValues(typeof(FieldInfo.IndexOptions)).Cast<FieldInfo.IndexOptions>().ToArray()[alwaysTestMax ? fieldMaxIndexOption : Random().Next(1 + fieldMaxIndexOption)];
bool doPayloads = indexOptions.CompareTo(FieldInfo.IndexOptions.DOCS_AND_FREQS_AND_POSITIONS) >= 0 && allowPayloads;
newFieldInfoArray[fieldUpto] = new FieldInfo(oldFieldInfo.Name, true, fieldUpto, false, false, doPayloads, indexOptions, null, DocValuesType.NUMERIC, null);
}
FieldInfos newFieldInfos = new FieldInfos(newFieldInfoArray);
// Estimate that flushed segment size will be 25% of
// what we use in RAM:
long bytes = TotalPostings * 8 + TotalPayloadBytes;
SegmentWriteState writeState = new SegmentWriteState(null, dir, segmentInfo, newFieldInfos, 32, null, new IOContext(new FlushInfo(MaxDoc, bytes)));
FieldsConsumer fieldsConsumer = codec.PostingsFormat().FieldsConsumer(writeState);
foreach (KeyValuePair<string, SortedDictionary<BytesRef, long>> fieldEnt in Fields)
{
string field = fieldEnt.Key;
IDictionary<BytesRef, long> terms = fieldEnt.Value;
FieldInfo fieldInfo = newFieldInfos.FieldInfo(field);
FieldInfo.IndexOptions? indexOptions = fieldInfo.FieldIndexOptions;
if (VERBOSE)
{
Console.WriteLine("field=" + field + " indexOtions=" + indexOptions);
}
bool doFreq = indexOptions >= FieldInfo.IndexOptions.DOCS_AND_FREQS;
bool doPos = indexOptions >= FieldInfo.IndexOptions.DOCS_AND_FREQS_AND_POSITIONS;
bool doPayloads = indexOptions >= FieldInfo.IndexOptions.DOCS_AND_FREQS_AND_POSITIONS && allowPayloads;
bool doOffsets = indexOptions >= FieldInfo.IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
TermsConsumer termsConsumer = fieldsConsumer.AddField(fieldInfo);
long sumTotalTF = 0;
long sumDF = 0;
FixedBitSet seenDocs = new FixedBitSet(MaxDoc);
foreach (KeyValuePair<BytesRef, long> termEnt in terms)
{
BytesRef term = termEnt.Key;
SeedPostings postings = GetSeedPostings(term.Utf8ToString(), termEnt.Value, false, maxAllowed);
if (VERBOSE)
{
Console.WriteLine(" term=" + field + ":" + term.Utf8ToString() + " docFreq=" + postings.DocFreq + " seed=" + termEnt.Value);
}
PostingsConsumer postingsConsumer = termsConsumer.StartTerm(term);
long totalTF = 0;
int docID = 0;
while ((docID = postings.NextDoc()) != DocsEnum.NO_MORE_DOCS)
{
int freq = postings.Freq();
if (VERBOSE)
{
Console.WriteLine(" " + postings.Upto + ": docID=" + docID + " freq=" + postings.Freq_Renamed);
}
postingsConsumer.StartDoc(docID, doFreq ? postings.Freq_Renamed : -1);
seenDocs.Set(docID);
if (doPos)
{
totalTF += postings.Freq_Renamed;
for (int posUpto = 0; posUpto < freq; posUpto++)
{
int pos = postings.NextPosition();
BytesRef payload = postings.Payload;
if (VERBOSE)
{
if (doPayloads)
{
Console.WriteLine(" pos=" + pos + " payload=" + (payload == null ? "null" : payload.Length + " bytes"));
}
else
{
Console.WriteLine(" pos=" + pos);
}
}
postingsConsumer.AddPosition(pos, doPayloads ? payload : null, doOffsets ? postings.StartOffset() : -1, doOffsets ? postings.EndOffset() : -1);
}
}
else if (doFreq)
{
totalTF += freq;
}
else
{
totalTF++;
}
postingsConsumer.FinishDoc();
}
termsConsumer.FinishTerm(term, new TermStats(postings.DocFreq, doFreq ? totalTF : -1));
sumTotalTF += totalTF;
sumDF += postings.DocFreq;
}
termsConsumer.Finish(doFreq ? sumTotalTF : -1, sumDF, seenDocs.Cardinality());
}
fieldsConsumer.Dispose();
if (VERBOSE)
{
Console.WriteLine("TEST: after indexing: files=");
foreach (string file in dir.ListAll())
{
Console.WriteLine(" " + file + ": " + dir.FileLength(file) + " bytes");
}
}
CurrentFieldInfos = newFieldInfos;
SegmentReadState readState = new SegmentReadState(dir, segmentInfo, newFieldInfos, IOContext.READ, 1);
return codec.PostingsFormat().FieldsProducer(readState);
}
/// <summary>
/// NOTE: this method creates a compound file for all files returned by
/// info.files(). While, generally, this may include separate norms and
/// deletion files, this SegmentInfo must not reference such files when this
/// method is called, because they are not allowed within a compound file.
/// </summary>
public static ICollection<string> CreateCompoundFile(InfoStream infoStream, Directory directory, CheckAbort checkAbort, SegmentInfo info, IOContext context)
{
string fileName = Index.IndexFileNames.SegmentFileName(info.Name, "", Lucene.Net.Index.IndexFileNames.COMPOUND_FILE_EXTENSION);
if (infoStream.IsEnabled("IW"))
{
infoStream.Message("IW", "create compound file " + fileName);
}
Debug.Assert(Lucene3xSegmentInfoFormat.GetDocStoreOffset(info) == -1);
// Now merge all added files
ICollection<string> files = info.Files;
CompoundFileDirectory cfsDir = new CompoundFileDirectory(directory, fileName, context, true);
IOException prior = null;
try
{
foreach (string file in files)
{
directory.Copy(cfsDir, file, file, context);
checkAbort.Work(directory.FileLength(file));
}
}
catch (System.IO.IOException ex)
{
prior = ex;
}
finally
{
bool success = false;
try
{
IOUtils.CloseWhileHandlingException(prior, cfsDir);
success = true;
}
finally
{
if (!success)
{
try
{
directory.DeleteFile(fileName);
}
catch (Exception)
{
}
try
{
directory.DeleteFile(Lucene.Net.Index.IndexFileNames.SegmentFileName(info.Name, "", Lucene.Net.Index.IndexFileNames.COMPOUND_FILE_ENTRIES_EXTENSION));
}
catch (Exception)
{
}
}
}
}
// Replace all previous files with the CFS/CFE files:
HashSet<string> siFiles = new HashSet<string>();
siFiles.Add(fileName);
siFiles.Add(Lucene.Net.Index.IndexFileNames.SegmentFileName(info.Name, "", Lucene.Net.Index.IndexFileNames.COMPOUND_FILE_ENTRIES_EXTENSION));
info.Files = siFiles;
return files;
}
/// <summary>
/// Initialize the deleter: find all previous commits in
/// the Directory, incref the files they reference, call
/// the policy to let it delete commits. this will remove
/// any files not referenced by any of the commits. </summary>
/// <exception cref="IOException"> if there is a low-level IO error </exception>
public IndexFileDeleter(Directory directory, IndexDeletionPolicy policy, SegmentInfos segmentInfos, InfoStream infoStream, IndexWriter writer, bool initialIndexExists)
{
this.InfoStream = infoStream;
this.Writer = writer;
string currentSegmentsFile = segmentInfos.SegmentsFileName;
if (infoStream.IsEnabled("IFD"))
{
infoStream.Message("IFD", "init: current segments file is \"" + currentSegmentsFile + "\"; deletionPolicy=" + policy);
}
this.Policy = policy;
this.Directory = directory;
// First pass: walk the files and initialize our ref
// counts:
long currentGen = segmentInfos.Generation;
CommitPoint currentCommitPoint = null;
string[] files = null;
try
{
files = directory.ListAll();
}
catch (NoSuchDirectoryException e)
{
// it means the directory is empty, so ignore it.
files = new string[0];
}
if (currentSegmentsFile != null)
{
Regex r = IndexFileNames.CODEC_FILE_PATTERN;
foreach (string fileName in files)
{
if (!fileName.EndsWith("write.lock") && !fileName.Equals(IndexFileNames.SEGMENTS_GEN)
&& (r.IsMatch(fileName) || fileName.StartsWith(IndexFileNames.SEGMENTS)))
{
// Add this file to refCounts with initial count 0:
GetRefCount(fileName);
if (fileName.StartsWith(IndexFileNames.SEGMENTS))
{
// this is a commit (segments or segments_N), and
// it's valid (<= the max gen). Load it, then
// incref all files it refers to:
if (infoStream.IsEnabled("IFD"))
{
infoStream.Message("IFD", "init: load commit \"" + fileName + "\"");
}
SegmentInfos sis = new SegmentInfos();
try
{
sis.Read(directory, fileName);
}
catch (FileNotFoundException e)
{
// LUCENE-948: on NFS (and maybe others), if
// you have writers switching back and forth
// between machines, it's very likely that the
// dir listing will be stale and will claim a
// file segments_X exists when in fact it
// doesn't. So, we catch this and handle it
// as if the file does not exist
if (infoStream.IsEnabled("IFD"))
{
infoStream.Message("IFD", "init: hit FileNotFoundException when loading commit \"" + fileName + "\"; skipping this commit point");
}
sis = null;
}
catch (IOException e)
{
if (SegmentInfos.GenerationFromSegmentsFileName(fileName) <= currentGen && directory.FileLength(fileName) > 0)
{
throw e;
}
else
{
// Most likely we are opening an index that
// has an aborted "future" commit, so suppress
// exc in this case
sis = null;
}
}
if (sis != null)
{
CommitPoint commitPoint = new CommitPoint(CommitsToDelete, directory, sis);
if (sis.Generation == segmentInfos.Generation)
{
currentCommitPoint = commitPoint;
}
Commits.Add(commitPoint);
IncRef(sis, true);
if (LastSegmentInfos_Renamed == null || sis.Generation > LastSegmentInfos_Renamed.Generation)
{
LastSegmentInfos_Renamed = sis;
}
}
}
}
}
}
if (currentCommitPoint == null && currentSegmentsFile != null && initialIndexExists)
{
// We did not in fact see the segments_N file
// corresponding to the segmentInfos that was passed
// in. Yet, it must exist, because our caller holds
// the write lock. this can happen when the directory
// listing was stale (eg when index accessed via NFS
// client with stale directory listing cache). So we
// try now to explicitly open this commit point:
SegmentInfos sis = new SegmentInfos();
try
{
sis.Read(directory, currentSegmentsFile);
}
catch (IOException e)
{
throw new CorruptIndexException("failed to locate current segments_N file \"" + currentSegmentsFile + "\"");
}
if (infoStream.IsEnabled("IFD"))
{
infoStream.Message("IFD", "forced open of current segments file " + segmentInfos.SegmentsFileName);
}
currentCommitPoint = new CommitPoint(CommitsToDelete, directory, sis);
Commits.Add(currentCommitPoint);
IncRef(sis, true);
}
// We keep commits list in sorted order (oldest to newest):
CollectionUtil.TimSort(Commits);
// Now delete anything with ref count at 0. These are
// presumably abandoned files eg due to crash of
// IndexWriter.
foreach (KeyValuePair<string, RefCount> entry in RefCounts)
{
RefCount rc = entry.Value;
string fileName = entry.Key;
if (0 == rc.Count)
{
if (infoStream.IsEnabled("IFD"))
{
infoStream.Message("IFD", "init: removing unreferenced file \"" + fileName + "\"");
}
DeleteFile(fileName);
}
}
// Finally, give policy a chance to remove things on
// startup:
Policy.OnInit(Commits);
// Always protect the incoming segmentInfos since
// sometime it may not be the most recent commit
Checkpoint(segmentInfos, false);
StartingCommitDeleted = currentCommitPoint == null ? false : currentCommitPoint.Deleted;
DeleteCommits();
}