// NOTE: only called from IndexWriter when a near
// real-time reader is opened, or applyDeletes is run,
// sharing a segment that's still being merged. This
// method is not fully thread safe, and relies on the
// synchronization in IndexWriter
internal void LoadTermsIndex(SegmentInfo si, int termsIndexDivisor)
{
lock (this)
{
if (tis == null)
{
Directory dir0;
if (si.GetUseCompoundFile())
{
// In some cases, we were originally opened when CFS
// was not used, but then we are asked to open the
// terms reader with index, the segment has switched
// to CFS
if (cfsReader == null)
{
cfsReader = new CompoundFileReader(dir, segment + "." + IndexFileNames.COMPOUND_FILE_EXTENSION, readBufferSize);
}
dir0 = cfsReader;
}
else
{
dir0 = dir;
}
tis = new TermInfosReader(dir0, segment, fieldInfos, readBufferSize, termsIndexDivisor);
}
}
}
internal void DecRef()
{
lock (this)
{
if (ref_Renamed.DecRef() == 0)
{
// close everything, nothing is shared anymore with other readers
if (tis != null)
{
tis.Close();
// null so if an app hangs on to us we still free most ram
tis = null;
}
if (tisNoIndex != null)
{
tisNoIndex.Close();
}
if (freqStream != null)
{
freqStream.Close();
}
if (proxStream != null)
{
proxStream.Close();
}
if (termVectorsReaderOrig != null)
{
termVectorsReaderOrig.Close();
}
if (fieldsReaderOrig != null)
{
fieldsReaderOrig.Close();
}
if (cfsReader != null)
{
cfsReader.Close();
}
if (storeCFSReader != null)
{
storeCFSReader.Close();
}
// Force FieldCache to evict our entries at this point
if (origInstance != null)
{
Mono.Lucene.Net.Search.FieldCache_Fields.DEFAULT.Purge(origInstance);
}
}
}
}
internal CoreReaders(SegmentReader origInstance, Directory dir, SegmentInfo si, int readBufferSize, int termsIndexDivisor)
{
segment = si.name;
this.readBufferSize = readBufferSize;
this.dir = dir;
bool success = false;
try
{
Directory dir0 = dir;
if (si.GetUseCompoundFile())
{
cfsReader = new CompoundFileReader(dir, segment + "." + IndexFileNames.COMPOUND_FILE_EXTENSION, readBufferSize);
dir0 = cfsReader;
}
cfsDir = dir0;
fieldInfos = new FieldInfos(cfsDir, segment + "." + IndexFileNames.FIELD_INFOS_EXTENSION);
this.termsIndexDivisor = termsIndexDivisor;
TermInfosReader reader = new TermInfosReader(cfsDir, segment, fieldInfos, readBufferSize, termsIndexDivisor);
if (termsIndexDivisor == - 1)
{
tisNoIndex = reader;
}
else
{
tis = reader;
tisNoIndex = null;
}
// make sure that all index files have been read or are kept open
// so that if an index update removes them we'll still have them
freqStream = cfsDir.OpenInput(segment + "." + IndexFileNames.FREQ_EXTENSION, readBufferSize);
if (fieldInfos.HasProx())
{
proxStream = cfsDir.OpenInput(segment + "." + IndexFileNames.PROX_EXTENSION, readBufferSize);
}
else
{
proxStream = null;
}
success = true;
}
finally
{
if (!success)
{
DecRef();
}
}
// Must assign this at the end -- if we hit an
// exception above core, we don't want to attempt to
// purge the FieldCache (will hit NPE because core is
// not assigned yet).
this.origInstance = origInstance;
}