public static void ReadLegacyInfos(SegmentInfos infos, Directory directory, IndexInput input, int format)
{
infos.Version = input.ReadLong(); // read version
infos.Counter = input.ReadInt(); // read counter
Lucene3xSegmentInfoReader reader = new Lucene3xSegmentInfoReader();
for (int i = input.ReadInt(); i > 0; i--) // read segmentInfos
{
SegmentCommitInfo siPerCommit = reader.ReadLegacySegmentInfo(directory, format, input);
SegmentInfo si = siPerCommit.Info;
if (si.Version == null)
{
// Could be a 3.0 - try to open the doc stores - if it fails, it's a
// 2.x segment, and an IndexFormatTooOldException will be thrown,
// which is what we want.
Directory dir = directory;
if (Lucene3xSegmentInfoFormat.GetDocStoreOffset(si) != -1)
{
if (Lucene3xSegmentInfoFormat.GetDocStoreIsCompoundFile(si))
{
dir = new CompoundFileDirectory(dir, IndexFileNames.SegmentFileName(Lucene3xSegmentInfoFormat.GetDocStoreSegment(si), "", Lucene3xCodec.COMPOUND_FILE_STORE_EXTENSION), IOContext.READONCE, false);
}
}
else if (si.UseCompoundFile)
{
dir = new CompoundFileDirectory(dir, IndexFileNames.SegmentFileName(si.Name, "", IndexFileNames.COMPOUND_FILE_EXTENSION), IOContext.READONCE, false);
}
try
{
Lucene3xStoredFieldsReader.CheckCodeVersion(dir, Lucene3xSegmentInfoFormat.GetDocStoreSegment(si));
}
finally
{
// If we opened the directory, close it
if (dir != directory)
{
dir.Dispose();
}
}
// Above call succeeded, so it's a 3.0 segment. Upgrade it so the next
// time the segment is read, its version won't be null and we won't
// need to open FieldsReader every time for each such segment.
si.Version = "3.0";
}
else if (si.Version.Equals("2.x"))
{
// If it's a 3x index touched by 3.1+ code, then segments record their
// version, whether they are 2.x ones or not. We detect that and throw
// appropriate exception.
throw new IndexFormatTooOldException("segment " + si.Name + " in resource " + input, si.Version);
}
infos.Add(siPerCommit);
}
infos.UserData = input.ReadStringStringMap();
}
public static void ReadLegacyInfos(SegmentInfos infos, Directory directory, IndexInput input, int format)
{
infos.Version = input.ReadLong(); // read version
infos.Counter = input.ReadInt(); // read counter
Lucene3xSegmentInfoReader reader = new Lucene3xSegmentInfoReader();
for (int i = input.ReadInt(); i > 0; i--) // read segmentInfos
{
SegmentCommitInfo siPerCommit = reader.ReadLegacySegmentInfo(directory, format, input);
SegmentInfo si = siPerCommit.Info;
if (si.Version == null)
{
// Could be a 3.0 - try to open the doc stores - if it fails, it's a
// 2.x segment, and an IndexFormatTooOldException will be thrown,
// which is what we want.
Directory dir = directory;
if (Lucene3xSegmentInfoFormat.GetDocStoreOffset(si) != -1)
{
if (Lucene3xSegmentInfoFormat.GetDocStoreIsCompoundFile(si))
{
dir = new CompoundFileDirectory(dir, IndexFileNames.SegmentFileName(Lucene3xSegmentInfoFormat.GetDocStoreSegment(si), "", Lucene3xCodec.COMPOUND_FILE_STORE_EXTENSION), IOContext.READONCE, false);
}
}
else if (si.UseCompoundFile)
{
dir = new CompoundFileDirectory(dir, IndexFileNames.SegmentFileName(si.Name, "", IndexFileNames.COMPOUND_FILE_EXTENSION), IOContext.READONCE, false);
}
try
{
Lucene3xStoredFieldsReader.CheckCodeVersion(dir, Lucene3xSegmentInfoFormat.GetDocStoreSegment(si));
}
finally
{
// If we opened the directory, close it
if (dir != directory)
{
dir.Dispose();
}
}
// Above call succeeded, so it's a 3.0 segment. Upgrade it so the next
// time the segment is read, its version won't be null and we won't
// need to open FieldsReader every time for each such segment.
si.Version = "3.0";
}
else if (si.Version.Equals("2.x"))
{
// If it's a 3x index touched by 3.1+ code, then segments record their
// version, whether they are 2.x ones or not. We detect that and throw
// appropriate exception.
throw new IndexFormatTooOldException("segment " + si.Name + " in resource " + input, si.Version);
}
infos.Add(siPerCommit);
}
infos.UserData = input.ReadStringStringMap();
}