| private Write ( Directory directory ) : void | ||
| directory | Directory | |
| Результат | void | |
/// <summary> Commit changes resulting from delete, undeleteAll, or
/// setNorm operations
///
/// If an exception is hit, then either no changes or all
/// changes will have been committed to the index
/// (transactional semantics).
/// </summary>
/// <throws> IOException if there is a low-level IO error </throws>
protected internal override void DoCommit()
{
if (hasChanges)
{
if (segmentInfos != null)
{
// Default deleter (for backwards compatibility) is
// KeepOnlyLastCommitDeleter:
IndexFileDeleter deleter = new IndexFileDeleter(directory, deletionPolicy == null ? new KeepOnlyLastCommitDeletionPolicy() : deletionPolicy, segmentInfos, null, null);
// Checkpoint the state we are about to change, in
// case we have to roll back:
StartCommit();
bool success = false;
try
{
CommitChanges();
segmentInfos.Write(directory);
success = true;
}
finally
{
if (!success)
{
// Rollback changes that were made to
// SegmentInfos but failed to get [fully]
// committed. This way this reader instance
// remains consistent (matched to what's
// actually in the index):
RollbackCommit();
// Recompute deletable files & remove them (so
// partially written .del files, etc, are
// removed):
deleter.Refresh();
}
}
// Have the deleter remove any now unreferenced
// files due to this commit:
deleter.Checkpoint(segmentInfos, true);
if (writeLock != null)
{
writeLock.Release(); // release write lock
writeLock = null;
}
}
else
CommitChanges();
}
hasChanges = false;
}
protected virtual void SetUp()
{
DocHelper.SetupDoc(doc1);
DocHelper.SetupDoc(doc2);
DocHelper.WriteDoc(dir, "seg-1", doc1);
DocHelper.WriteDoc(dir, "seg-2", doc2);
try
{
sis.Write(dir);
reader1 = new SegmentReader(new SegmentInfo("seg-1", 1, dir));
reader2 = new SegmentReader(new SegmentInfo("seg-2", 1, dir));
readers[0] = reader1;
readers[1] = reader2;
}
catch (System.IO.IOException e)
{
System.Console.Error.WriteLine(e.StackTrace);
}
}
/// <summary>Returns true if index is clean, else false.</summary>
public static bool Check(Directory dir, bool doFix)
{
System.Globalization.NumberFormatInfo nf = System.Globalization.CultureInfo.CurrentCulture.NumberFormat;
SegmentInfos sis = new SegmentInfos();
try
{
sis.Read(dir);
}
catch (System.Exception t)
{
out_Renamed.WriteLine("ERROR: could not read any segments file in directory");
out_Renamed.Write(t.StackTrace);
out_Renamed.Flush();
return(false);
}
int numSegments = sis.Count;
System.String segmentsFileName = sis.GetCurrentSegmentFileName();
IndexInput input = null;
try
{
input = dir.OpenInput(segmentsFileName);
}
catch (System.Exception t)
{
out_Renamed.WriteLine("ERROR: could not open segments file in directory");
out_Renamed.Write(t.StackTrace);
out_Renamed.Flush();
return(false);
}
int format = 0;
try
{
format = input.ReadInt();
}
catch (System.Exception t)
{
out_Renamed.WriteLine("ERROR: could not read segment file version in directory");
out_Renamed.Write(t.StackTrace);
out_Renamed.Flush();
return(false);
}
finally
{
if (input != null)
{
input.Close();
}
}
System.String sFormat = "";
bool skip = false;
if (format == SegmentInfos.FORMAT)
{
sFormat = "FORMAT [Lucene Pre-2.1]";
}
if (format == SegmentInfos.FORMAT_LOCKLESS)
{
sFormat = "FORMAT_LOCKLESS [Lucene 2.1]";
}
else if (format == SegmentInfos.FORMAT_SINGLE_NORM_FILE)
{
sFormat = "FORMAT_SINGLE_NORM_FILE [Lucene 2.2]";
}
else if (format == SegmentInfos.FORMAT_SHARED_DOC_STORE)
{
sFormat = "FORMAT_SHARED_DOC_STORE [Lucene 2.3]";
}
else if (format < SegmentInfos.FORMAT_SHARED_DOC_STORE)
{
sFormat = "int=" + format + " [newer version of Lucene than this tool]";
skip = true;
}
else
{
sFormat = format + " [Lucene 1.3 or prior]";
}
out_Renamed.WriteLine("Segments file=" + segmentsFileName + " numSegments=" + numSegments + " version=" + sFormat);
if (skip)
{
out_Renamed.WriteLine("\nERROR: this index appears to be created by a newer version of Lucene than this tool was compiled on; please re-compile this tool on the matching version of Lucene; exiting");
return(false);
}
SegmentInfos newSIS = (SegmentInfos)sis.Clone();
newSIS.Clear();
bool changed = false;
int totLoseDocCount = 0;
int numBadSegments = 0;
for (int i = 0; i < numSegments; i++)
{
SegmentInfo info = sis.Info(i);
out_Renamed.WriteLine(" " + (1 + i) + " of " + numSegments + ": name=" + info.name + " docCount=" + info.docCount);
int toLoseDocCount = info.docCount;
SegmentReader reader = null;
try
{
out_Renamed.WriteLine(" compound=" + info.GetUseCompoundFile());
out_Renamed.WriteLine(" numFiles=" + info.Files().Count);
out_Renamed.WriteLine(String.Format(nf, " size (MB)={0:f}", new Object[] { (info.SizeInBytes() / (1024.0 * 1024.0)) }));
int docStoreOffset = info.GetDocStoreOffset();
if (docStoreOffset != -1)
{
out_Renamed.WriteLine(" docStoreOffset=" + docStoreOffset);
out_Renamed.WriteLine(" docStoreSegment=" + info.GetDocStoreSegment());
out_Renamed.WriteLine(" docStoreIsCompoundFile=" + info.GetDocStoreIsCompoundFile());
}
System.String delFileName = info.GetDelFileName();
if (delFileName == null)
{
out_Renamed.WriteLine(" no deletions");
}
else
{
out_Renamed.WriteLine(" has deletions [delFileName=" + delFileName + "]");
}
out_Renamed.Write(" test: open reader.........");
reader = SegmentReader.Get(info);
int numDocs = reader.NumDocs();
toLoseDocCount = numDocs;
if (reader.HasDeletions())
{
out_Renamed.WriteLine("OK [" + (info.docCount - numDocs) + " deleted docs]");
}
else
{
out_Renamed.WriteLine("OK");
}
out_Renamed.Write(" test: fields, norms.......");
System.Collections.IDictionary fieldNames = (System.Collections.IDictionary)reader.GetFieldNames(IndexReader.FieldOption.ALL);
System.Collections.IEnumerator it = fieldNames.Keys.GetEnumerator();
while (it.MoveNext())
{
System.String fieldName = (System.String)it.Current;
byte[] b = reader.Norms(fieldName);
if (b.Length != info.docCount)
{
throw new System.SystemException("norms for field \"" + fieldName + "\" is length " + b.Length + " != maxDoc " + info.docCount);
}
}
out_Renamed.WriteLine("OK [" + fieldNames.Count + " fields]");
out_Renamed.Write(" test: terms, freq, prox...");
TermEnum termEnum = reader.Terms();
TermPositions termPositions = reader.TermPositions();
// Used only to count up # deleted docs for this
// term
MySegmentTermDocs myTermDocs = new MySegmentTermDocs(reader);
long termCount = 0;
long totFreq = 0;
long totPos = 0;
while (termEnum.Next())
{
termCount++;
Term term = termEnum.Term();
int docFreq = termEnum.DocFreq();
termPositions.Seek(term);
int lastDoc = -1;
int freq0 = 0;
totFreq += docFreq;
while (termPositions.Next())
{
freq0++;
int doc = termPositions.Doc();
int freq = termPositions.Freq();
if (doc <= lastDoc)
{
throw new System.SystemException("term " + term + ": doc " + doc + " < lastDoc " + lastDoc);
}
lastDoc = doc;
if (freq <= 0)
{
throw new System.SystemException("term " + term + ": doc " + doc + ": freq " + freq + " is out of bounds");
}
int lastPos = -1;
totPos += freq;
for (int j = 0; j < freq; j++)
{
int pos = termPositions.NextPosition();
if (pos < 0)
{
throw new System.SystemException("term " + term + ": doc " + doc + ": pos " + pos + " is out of bounds");
}
if (pos <= lastPos)
{
throw new System.SystemException("term " + term + ": doc " + doc + ": pos " + pos + " < lastPos " + lastPos);
}
}
}
// Now count how many deleted docs occurred in
// this term:
int delCount;
if (reader.HasDeletions())
{
myTermDocs.Seek(term);
while (myTermDocs.Next())
{
}
delCount = myTermDocs.delCount;
}
else
{
delCount = 0;
}
if (freq0 + delCount != docFreq)
{
throw new System.SystemException("term " + term + " docFreq=" + docFreq + " != num docs seen " + freq0 + " + num docs deleted " + delCount);
}
}
out_Renamed.WriteLine("OK [" + termCount + " terms; " + totFreq + " terms/docs pairs; " + totPos + " tokens]");
out_Renamed.Write(" test: stored fields.......");
int docCount = 0;
long totFields = 0;
for (int j = 0; j < info.docCount; j++)
{
if (!reader.IsDeleted(j))
{
docCount++;
Document doc = reader.Document(j);
totFields += doc.GetFields().Count;
}
}
if (docCount != reader.NumDocs())
{
throw new System.SystemException("docCount=" + docCount + " but saw " + docCount + " undeleted docs");
}
out_Renamed.WriteLine(String.Format(nf, "OK [{0:d} total field count; avg {1:f} fields per doc]", new Object[] { totFields, (((float)totFields) / docCount) }));
out_Renamed.Write(" test: term vectors........");
int totVectors = 0;
for (int j = 0; j < info.docCount; j++)
{
if (!reader.IsDeleted(j))
{
TermFreqVector[] tfv = reader.GetTermFreqVectors(j);
if (tfv != null)
{
totVectors += tfv.Length;
}
}
}
out_Renamed.WriteLine(String.Format(nf, "OK [{0:d} total vector count; avg {1:f} term/freq vector fields per doc]", new Object[] { totVectors, (((float)totVectors) / docCount) }));
out_Renamed.WriteLine("");
}
catch (System.Exception t)
{
out_Renamed.WriteLine("FAILED");
System.String comment;
if (doFix)
{
comment = "will remove reference to this segment (-fix is specified)";
}
else
{
comment = "would remove reference to this segment (-fix was not specified)";
}
out_Renamed.WriteLine(" WARNING: " + comment + "; full exception:");
out_Renamed.Write(t.StackTrace);
out_Renamed.Flush();
out_Renamed.WriteLine("");
totLoseDocCount += toLoseDocCount;
numBadSegments++;
changed = true;
continue;
}
finally
{
if (reader != null)
{
reader.Close();
}
}
// Keeper
newSIS.Add(info.Clone());
}
if (!changed)
{
out_Renamed.WriteLine("No problems were detected with this index.\n");
return(true);
}
else
{
out_Renamed.WriteLine("WARNING: " + numBadSegments + " broken segments detected");
if (doFix)
{
out_Renamed.WriteLine("WARNING: " + totLoseDocCount + " documents will be lost");
}
else
{
out_Renamed.WriteLine("WARNING: " + totLoseDocCount + " documents would be lost if -fix were specified");
}
out_Renamed.WriteLine();
}
if (doFix)
{
out_Renamed.WriteLine("NOTE: will write new segments file in 5 seconds; this will remove " + totLoseDocCount + " docs from the index. THIS IS YOUR LAST CHANCE TO CTRL+C!");
for (int i = 0; i < 5; i++)
{
try
{
System.Threading.Thread.Sleep(new System.TimeSpan((System.Int64) 10000 * 1000));
}
catch (System.Threading.ThreadInterruptedException)
{
SupportClass.ThreadClass.Current().Interrupt();
i--;
continue;
}
out_Renamed.WriteLine(" " + (5 - i) + "...");
}
out_Renamed.Write("Writing...");
try
{
newSIS.Write(dir);
}
catch (System.Exception t)
{
out_Renamed.WriteLine("FAILED; exiting");
out_Renamed.Write(t.StackTrace);
out_Renamed.Flush();
return(false);
}
out_Renamed.WriteLine("OK");
out_Renamed.WriteLine("Wrote new segments file \"" + newSIS.GetCurrentSegmentFileName() + "\"");
}
else
{
out_Renamed.WriteLine("NOTE: would write new segments file [-fix was not specified]");
}
out_Renamed.WriteLine("");
return(false);
}
/// <summary> Commit changes resulting from delete, undeleteAll, or
/// setNorm operations
///
/// If an exception is hit, then either no changes or all
/// changes will have been committed to the index
/// (transactional semantics).
///
/// </summary>
/// <throws> IOException </throws>
public void Commit()
{
lock (this)
{
if (hasChanges)
{
if (deleter == null)
{
// In the MultiReader case, we share this deleter
// across all SegmentReaders:
SetDeleter(new IndexFileDeleter(segmentInfos, directory));
}
if (directoryOwner)
{
// Should not be necessary: no prior commit should
// have left pending files, so just defensive:
deleter.ClearPendingFiles();
System.String oldInfoFileName = segmentInfos.GetCurrentSegmentFileName();
System.String nextSegmentsFileName = segmentInfos.GetNextSegmentFileName();
// Checkpoint the state we are about to change, in
// case we have to roll back:
StartCommit();
bool success = false;
try
{
DoCommit();
segmentInfos.Write(directory);
success = true;
}
finally
{
if (!success)
{
// Rollback changes that were made to
// SegmentInfos but failed to get [fully]
// committed. This way this reader instance
// remains consistent (matched to what's
// actually in the index):
RollbackCommit();
// Erase any pending files that we were going to delete:
deleter.ClearPendingFiles();
// Remove possibly partially written next
// segments file:
deleter.DeleteFile(nextSegmentsFileName);
// Recompute deletable files & remove them (so
// partially written .del files, etc, are
// removed):
deleter.FindDeletableFiles();
deleter.DeleteFiles();
}
}
// Attempt to delete all files we just obsoleted:
deleter.DeleteFile(oldInfoFileName);
deleter.CommitPendingFiles();
if (writeLock != null)
{
writeLock.Release(); // release write lock
writeLock = null;
}
}
else
{
DoCommit();
}
}
hasChanges = false;
}
}