//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: void addNumericField(index.FieldInfo field, Iterable<Number> values, boolean optimizeStorage) throws java.io.IOException
internal virtual void addNumericField(FieldInfo field, IEnumerable <Number> values, bool optimizeStorage)
{
meta.writeVInt(field.number);
meta.writeByte(NUMBER);
meta.writeLong(data.FilePointer);
long minValue = long.MaxValue;
long maxValue = long.MinValue;
long gcd = 0;
bool missing = false;
// TODO: more efficient?
HashSet <long?> uniqueValues = null;
if (optimizeStorage)
{
uniqueValues = new HashSet <>();
long count = 0;
foreach (Number nv in values)
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final long v;
long v;
if (nv == null)
{
v = 0;
missing = true;
}
else
{
v = (long)nv;
}
if (gcd != 1)
{
if (v < long.MinValue / 2 || v > long.MaxValue / 2)
{
// in that case v - minValue might overflow and make the GCD computation return
// wrong results. Since these extreme values are unlikely, we just discard
// GCD computation for them
gcd = 1;
} // minValue needs to be set first
else if (count != 0)
{
gcd = MathUtil.gcd(gcd, v - minValue);
}
}
minValue = Math.Min(minValue, v);
maxValue = Math.Max(maxValue, v);
if (uniqueValues != null)
{
if (uniqueValues.Add(v))
{
if (uniqueValues.Count > 256)
{
uniqueValues = null;
}
}
}
++count;
}
Debug.Assert(count == maxDoc);
}
if (missing)
{
long start = data.FilePointer;
writeMissingBitset(values);
meta.writeLong(start);
meta.writeLong(data.FilePointer - start);
}
else
{
meta.writeLong(-1L);
}
if (uniqueValues != null)
{
// small number of unique values
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final int bitsPerValue = util.packed.PackedInts.bitsRequired(uniqueValues.size()-1);
int bitsPerValue = PackedInts.bitsRequired(uniqueValues.Count - 1);
FormatAndBits formatAndBits = PackedInts.fastestFormatAndBits(maxDoc, bitsPerValue, acceptableOverheadRatio);
if (formatAndBits.bitsPerValue == 8 && minValue >= sbyte.MinValue && maxValue <= sbyte.MaxValue)
{
meta.writeByte(UNCOMPRESSED); // uncompressed
foreach (Number nv in values)
{
data.writeByte(nv == null ? 0 : (long)(sbyte)nv);
}
}
else
{
meta.writeByte(TABLE_COMPRESSED); // table-compressed
long?[] decode = uniqueValues.toArray(new long?[uniqueValues.Count]);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.util.HashMap<Long,Integer> encode = new java.util.HashMap<>();
Dictionary <long?, int?> encode = new Dictionary <long?, int?>();
data.writeVInt(decode.Length);
for (int i = 0; i < decode.Length; i++)
{
data.writeLong(decode[i]);
encode[decode[i]] = i;
}
meta.writeVInt(PackedInts.VERSION_CURRENT);
data.writeVInt(formatAndBits.format.Id);
data.writeVInt(formatAndBits.bitsPerValue);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final util.packed.PackedInts.Writer writer = util.packed.PackedInts.getWriterNoHeader(data, formatAndBits.format, maxDoc, formatAndBits.bitsPerValue, util.packed.PackedInts.DEFAULT_BUFFER_SIZE);
PackedInts.Writer writer = PackedInts.getWriterNoHeader(data, formatAndBits.format, maxDoc, formatAndBits.bitsPerValue, PackedInts.DEFAULT_BUFFER_SIZE);
foreach (Number nv in values)
{
writer.add(encode[nv == null ? 0 : (long)nv]);
}
writer.finish();
}
}
else if (gcd != 0 && gcd != 1)
{
meta.writeByte(GCD_COMPRESSED);
meta.writeVInt(PackedInts.VERSION_CURRENT);
data.writeLong(minValue);
data.writeLong(gcd);
data.writeVInt(BLOCK_SIZE);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final util.packed.BlockPackedWriter writer = new util.packed.BlockPackedWriter(data, BLOCK_SIZE);
BlockPackedWriter writer = new BlockPackedWriter(data, BLOCK_SIZE);
foreach (Number nv in values)
{
long value = nv == null ? 0 : (long)nv;
writer.add((value - minValue) / gcd);
}
writer.finish();
}
else
{
meta.writeByte(DELTA_COMPRESSED); // delta-compressed
meta.writeVInt(PackedInts.VERSION_CURRENT);
data.writeVInt(BLOCK_SIZE);
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final util.packed.BlockPackedWriter writer = new util.packed.BlockPackedWriter(data, BLOCK_SIZE);
BlockPackedWriter writer = new BlockPackedWriter(data, BLOCK_SIZE);
foreach (Number nv in values)
{
writer.add(nv == null ? 0 : (long)nv);
}
writer.finish();
}
}