/// <summary> Construct a new SegmentInfo instance by reading a
/// previously saved SegmentInfo from input.
///
/// </summary>
/// <param name="dir">directory to load from
/// </param>
/// <param name="format">format of the segments info file
/// </param>
/// <param name="input">input handle to read segment info from
/// </param>
internal SegmentInfo(Directory dir, int format, IndexInput input, IState state)
{
this.dir = dir;
name = input.ReadString(state);
docCount = input.ReadInt(state);
if (format <= SegmentInfos.FORMAT_LOCKLESS)
{
delGen = input.ReadLong(state);
if (format <= SegmentInfos.FORMAT_SHARED_DOC_STORE)
{
docStoreOffset = input.ReadInt(state);
if (docStoreOffset != -1)
{
docStoreSegment = input.ReadString(state);
docStoreIsCompoundFile = (1 == input.ReadByte(state));
}
else
{
docStoreSegment = name;
docStoreIsCompoundFile = false;
}
}
else
{
docStoreOffset = -1;
docStoreSegment = name;
docStoreIsCompoundFile = false;
}
if (format <= SegmentInfos.FORMAT_SINGLE_NORM_FILE)
{
hasSingleNormFile = (1 == input.ReadByte(state));
}
else
{
hasSingleNormFile = false;
}
int numNormGen = input.ReadInt(state);
if (numNormGen == NO)
{
normGen = null;
}
else
{
normGen = new long[numNormGen];
for (int j = 0; j < numNormGen; j++)
{
normGen[j] = input.ReadLong(state);
}
}
isCompoundFile = (sbyte)input.ReadByte(state);
preLockless = (isCompoundFile == CHECK_DIR);
if (format <= SegmentInfos.FORMAT_DEL_COUNT)
{
delCount = input.ReadInt(state);
System.Diagnostics.Debug.Assert(delCount <= docCount);
}
else
{
delCount = -1;
}
if (format <= SegmentInfos.FORMAT_HAS_PROX)
{
hasProx = input.ReadByte(state) == 1;
}
else
{
hasProx = true;
}
if (format <= SegmentInfos.FORMAT_DIAGNOSTICS)
{
diagnostics = input.ReadStringStringMap(state);
}
else
{
diagnostics = new Dictionary <string, string>();
}
}
else
{
delGen = CHECK_DIR;
normGen = null;
isCompoundFile = (sbyte)(CHECK_DIR);
preLockless = true;
hasSingleNormFile = false;
docStoreOffset = -1;
docStoreIsCompoundFile = false;
docStoreSegment = null;
delCount = -1;
hasProx = true;
diagnostics = new Dictionary <string, string>();
}
}
public override IDictionary <string, string> ReadStringStringMap()
{
EnsureOpen();
return(@delegate.ReadStringStringMap());
}
