private static unsafe bool IsCacheValid(ByteArrayReaderCache <ByteArray, string> byteArrayCache, ByteArray byteArray, string str) { var byteCount = System.Text.Encoding.UTF8.GetByteCount(str); var buffer = byteArrayCache.GetScratchBuffer(byteCount); System.Text.Encoding.UTF8.GetBytes(str, 0, str.Length, buffer, 0); var cached = new ReadOnlySpan <byte>((void *)byteArray.Pointer, byteArray.Length); var expected = buffer.AsSpan(0, byteCount); return(cached.SequenceEqual(expected)); }
private static string ToString(ByteArray byteArray, ByteArrayReaderCache <ByteArray, string> byteArrayCache) { if (byteArrayCache.TryGetValue(byteArray, out var str)) { // The string seems to already be in the cache. Check that the content matches. if (IsCacheValid(byteArrayCache, byteArray, str)) { return(str); } // The cache does not appear to be valid anymore. byteArrayCache.Clear(); } return(byteArrayCache.Add(byteArray, LogicalRead.ToString(byteArray))); }
public static Converter GetConverter(LogicalType logicalType, int scale, ByteArrayReaderCache <TPhysical, TLogical> byteArrayCache) { if (typeof(TLogical) == typeof(bool) || typeof(TLogical) == typeof(int) || typeof(TLogical) == typeof(long) || typeof(TLogical) == typeof(Int96) || typeof(TLogical) == typeof(float) || typeof(TLogical) == typeof(double)) { return((Converter)(Delegate)(LogicalRead <TPhysical, TPhysical> .Converter)((s, dl, d, nl) => ConvertNative(s, d))); } if (typeof(TLogical) == typeof(bool?) || typeof(TLogical) == typeof(int?) || typeof(TLogical) == typeof(long?) || typeof(TLogical) == typeof(Int96?) || typeof(TLogical) == typeof(float?) || typeof(TLogical) == typeof(double?)) { return((Converter)(Delegate)(LogicalRead <TPhysical?, TPhysical> .Converter)ConvertNative); } if (typeof(TLogical) == typeof(sbyte)) { return((Converter)(Delegate)(LogicalRead <sbyte, int> .Converter)((s, dl, d, nl) => ConvertInt8(s, d))); } if (typeof(TLogical) == typeof(sbyte?)) { return((Converter)(Delegate)(LogicalRead <sbyte?, int> .Converter)ConvertInt8); } if (typeof(TLogical) == typeof(byte)) { return((Converter)(Delegate)(LogicalRead <byte, int> .Converter)((s, dl, d, nl) => ConvertUInt8(s, d))); } if (typeof(TLogical) == typeof(byte?)) { return((Converter)(Delegate)(LogicalRead <byte?, int> .Converter)ConvertUInt8); } if (typeof(TLogical) == typeof(short)) { return((Converter)(Delegate)(LogicalRead <short, int> .Converter)((s, dl, d, nl) => ConvertInt16(s, d))); } if (typeof(TLogical) == typeof(short?)) { return((Converter)(Delegate)(LogicalRead <short?, int> .Converter)ConvertInt16); } if (typeof(TLogical) == typeof(ushort)) { return((Converter)(Delegate)(LogicalRead <ushort, int> .Converter)((s, dl, d, nl) => ConvertUInt16(s, d))); } if (typeof(TLogical) == typeof(ushort?)) { return((Converter)(Delegate)(LogicalRead <ushort?, int> .Converter)ConvertUInt16); } if (typeof(TLogical) == typeof(uint)) { return((Converter)(Delegate)(LogicalRead <uint, int> .Converter)((s, dl, d, nl) => ConvertNative(MemoryMarshal.Cast <int, uint>(s), d))); } if (typeof(TLogical) == typeof(uint?)) { return((Converter)(Delegate)(LogicalRead <uint?, int> .Converter)((s, dl, d, nl) => ConvertNative(MemoryMarshal.Cast <int, uint>(s), dl, d, nl))); } if (typeof(TLogical) == typeof(ulong)) { return((Converter)(Delegate)(LogicalRead <ulong, long> .Converter)((s, dl, d, nl) => ConvertNative(MemoryMarshal.Cast <long, ulong>(s), d))); } if (typeof(TLogical) == typeof(ulong?)) { return((Converter)(Delegate)(LogicalRead <ulong?, long> .Converter)((s, dl, d, nl) => ConvertNative(MemoryMarshal.Cast <long, ulong>(s), dl, d, nl))); } if (typeof(TLogical) == typeof(decimal)) { var multiplier = Decimal128.GetScaleMultiplier(scale); return((Converter)(Delegate)(LogicalRead <decimal, FixedLenByteArray> .Converter)((s, dl, d, nl) => ConvertDecimal128(s, d, multiplier))); } if (typeof(TLogical) == typeof(decimal?)) { var multiplier = Decimal128.GetScaleMultiplier(scale); return((Converter)(Delegate)(LogicalRead <decimal?, FixedLenByteArray> .Converter)((s, dl, d, nl) => ConvertDecimal128(s, dl, d, multiplier, nl))); } if (typeof(TLogical) == typeof(Guid)) { return((Converter)(Delegate)(LogicalRead <Guid, FixedLenByteArray> .Converter)((s, dl, d, nl) => ConvertUuid(s, d))); } if (typeof(TLogical) == typeof(Guid?)) { return((Converter)(Delegate)(LogicalRead <Guid?, FixedLenByteArray> .Converter)ConvertUuid); } if (typeof(TLogical) == typeof(Date)) { return((Converter)(Delegate)(LogicalRead <Date, int> .Converter)((s, dl, d, nl) => ConvertNative(MemoryMarshal.Cast <int, Date>(s), d))); } if (typeof(TLogical) == typeof(Date?)) { return((Converter)(Delegate)(LogicalRead <Date?, int> .Converter)((s, dl, d, nl) => ConvertNative(MemoryMarshal.Cast <int, Date>(s), dl, d, nl))); } if (typeof(TLogical) == typeof(DateTime)) { switch (((TimestampLogicalType)logicalType).TimeUnit) { case TimeUnit.Millis: return((Converter)(Delegate)(LogicalRead <DateTime, long> .Converter)((s, dl, d, nl) => ConvertDateTimeMillis(s, d))); case TimeUnit.Micros: return((Converter)(Delegate)(LogicalRead <DateTime, long> .Converter)((s, dl, d, nl) => ConvertDateTimeMicros(s, d))); } } if (typeof(TLogical) == typeof(DateTimeNanos)) { return((Converter)(Delegate)(LogicalRead <DateTimeNanos, long> .Converter)((s, dl, d, nl) => ConvertNative(MemoryMarshal.Cast <long, DateTimeNanos>(s), d))); } if (typeof(TLogical) == typeof(DateTime?)) { switch (((TimestampLogicalType)logicalType).TimeUnit) { case TimeUnit.Millis: return((Converter)(Delegate)(LogicalRead <DateTime?, long> .Converter)ConvertDateTimeMillis); case TimeUnit.Micros: return((Converter)(Delegate)(LogicalRead <DateTime?, long> .Converter)ConvertDateTimeMicros); case TimeUnit.Nanos: return((Converter)(Delegate)(LogicalRead <TPhysical?, TPhysical> .Converter)ConvertNative); } } if (typeof(TLogical) == typeof(DateTimeNanos?)) { return((Converter)(Delegate)(LogicalRead <DateTimeNanos?, long> .Converter)((s, dl, d, nl) => ConvertNative(MemoryMarshal.Cast <long, DateTimeNanos>(s), dl, d, nl))); } if (typeof(TLogical) == typeof(TimeSpan)) { switch (((TimeLogicalType)logicalType).TimeUnit) { case TimeUnit.Millis: return((Converter)(Delegate)(LogicalRead <TimeSpan, int> .Converter)((s, dl, d, nl) => ConvertTimeSpanMillis(s, d))); case TimeUnit.Micros: return((Converter)(Delegate)(LogicalRead <TimeSpan, long> .Converter)((s, dl, d, nl) => ConvertTimeSpanMicros(s, d))); } } if (typeof(TLogical) == typeof(TimeSpanNanos)) { return((Converter)(Delegate)(LogicalRead <TimeSpanNanos, long> .Converter)((s, dl, d, nl) => ConvertNative(MemoryMarshal.Cast <long, TimeSpanNanos>(s), d))); } if (typeof(TLogical) == typeof(TimeSpan?)) { var timeLogicalType = (TimeLogicalType)logicalType; var timeUnit = timeLogicalType.TimeUnit; switch (timeUnit) { case TimeUnit.Millis: return((Converter)(Delegate)(LogicalRead <TimeSpan?, int> .Converter)ConvertTimeSpanMillis); case TimeUnit.Micros: return((Converter)(Delegate)(LogicalRead <TimeSpan?, long> .Converter)ConvertTimeSpanMicros); } } if (typeof(TLogical) == typeof(TimeSpanNanos?)) { return((Converter)(Delegate)(LogicalRead <TimeSpanNanos?, long> .Converter)((s, dl, d, nl) => ConvertNative(MemoryMarshal.Cast <long, TimeSpanNanos>(s), dl, d, nl))); } if (typeof(TLogical) == typeof(string)) { return(byteArrayCache.IsUsable ? (Converter)(Delegate)(LogicalRead <string, ByteArray> .Converter)((s, dl, d, nl) => ConvertString(s, dl, d, nl, (ByteArrayReaderCache <ByteArray, string>)(object) byteArrayCache)) : (Converter)(Delegate)(LogicalRead <string, ByteArray> .Converter)ConvertString); } if (typeof(TLogical) == typeof(byte[])) { // Do not reuse byte[] instances, as they are not immutable. // Perhaps an optional optimisation if there is demand for it? //return byteArrayCache.IsUsable // ? (Converter) (Delegate) (LogicalRead<byte[], ByteArray>.Converter) ((s, dl, d, nl) => ConvertByteArray(s, dl, d, nl, (ByteArrayReaderCache<ByteArray, byte[]>) (object) byteArrayCache)) // : (Converter) (Delegate) (LogicalRead<byte[], ByteArray>.Converter) ConvertByteArray; return((Converter)(Delegate)(LogicalRead <byte[], ByteArray> .Converter)ConvertByteArray); } throw new NotSupportedException($"unsupported logical system type {typeof(TLogical)} with logical type {logicalType}"); }
private static void ConvertString(ReadOnlySpan <ByteArray> source, ReadOnlySpan <short> defLevels, Span <string> destination, short nullLevel, ByteArrayReaderCache <ByteArray, string> byteArrayCache) { for (int i = 0, src = 0; i != destination.Length; ++i) { destination[i] = !defLevels.IsEmpty && defLevels[i] == nullLevel ? null : ToString(source[src++], byteArrayCache); } }
public static Delegate GetConverter(ColumnDescriptor columnDescriptor, ColumnChunkMetaData columnChunkMetaData) { if (typeof(TLogical) == typeof(bool) || typeof(TLogical) == typeof(int) || typeof(TLogical) == typeof(long) || typeof(TLogical) == typeof(Int96) || typeof(TLogical) == typeof(float) || typeof(TLogical) == typeof(double)) { return(LogicalRead.GetNativeConverter <TPhysical, TPhysical>()); } if (typeof(TLogical) == typeof(bool?) || typeof(TLogical) == typeof(int?) || typeof(TLogical) == typeof(long?) || typeof(TLogical) == typeof(Int96?) || typeof(TLogical) == typeof(float?) || typeof(TLogical) == typeof(double?)) { return(LogicalRead.GetNullableNativeConverter <TPhysical, TPhysical>()); } if (typeof(TLogical) == typeof(sbyte)) { return((LogicalRead <sbyte, int> .Converter)((s, _, d, _) => LogicalRead.ConvertInt8(s, d))); } if (typeof(TLogical) == typeof(sbyte?)) { return((LogicalRead <sbyte?, int> .Converter)LogicalRead.ConvertInt8); } if (typeof(TLogical) == typeof(byte)) { return((LogicalRead <byte, int> .Converter)((s, _, d, _) => LogicalRead.ConvertUInt8(s, d))); } if (typeof(TLogical) == typeof(byte?)) { return((LogicalRead <byte?, int> .Converter)LogicalRead.ConvertUInt8); } if (typeof(TLogical) == typeof(short)) { return((LogicalRead <short, int> .Converter)((s, _, d, _) => LogicalRead.ConvertInt16(s, d))); } if (typeof(TLogical) == typeof(short?)) { return((LogicalRead <short?, int> .Converter)LogicalRead.ConvertInt16); } if (typeof(TLogical) == typeof(ushort)) { return((LogicalRead <ushort, int> .Converter)((s, _, d, _) => LogicalRead.ConvertUInt16(s, d))); } if (typeof(TLogical) == typeof(ushort?)) { return((LogicalRead <ushort?, int> .Converter)LogicalRead.ConvertUInt16); } if (typeof(TLogical) == typeof(uint)) { return(LogicalRead.GetNativeConverter <uint, int>()); } if (typeof(TLogical) == typeof(uint?)) { return(LogicalRead.GetNullableNativeConverter <uint, int>()); } if (typeof(TLogical) == typeof(ulong)) { return(LogicalRead.GetNativeConverter <ulong, long>()); } if (typeof(TLogical) == typeof(ulong?)) { return(LogicalRead.GetNullableNativeConverter <ulong, long>()); } if (typeof(TLogical) == typeof(decimal)) { var multiplier = Decimal128.GetScaleMultiplier(columnDescriptor.TypeScale); return((LogicalRead <decimal, FixedLenByteArray> .Converter)((s, _, d, _) => LogicalRead.ConvertDecimal128(s, d, multiplier))); } if (typeof(TLogical) == typeof(decimal?)) { var multiplier = Decimal128.GetScaleMultiplier(columnDescriptor.TypeScale); return((LogicalRead <decimal?, FixedLenByteArray> .Converter)((s, dl, d, del) => LogicalRead.ConvertDecimal128(s, dl, d, multiplier, del))); } if (typeof(TLogical) == typeof(Guid)) { return((LogicalRead <Guid, FixedLenByteArray> .Converter)((s, _, d, _) => LogicalRead.ConvertUuid(s, d))); } if (typeof(TLogical) == typeof(Guid?)) { return((LogicalRead <Guid?, FixedLenByteArray> .Converter)LogicalRead.ConvertUuid); } if (typeof(TLogical) == typeof(Date)) { return(LogicalRead.GetNativeConverter <Date, int>()); } if (typeof(TLogical) == typeof(Date?)) { return(LogicalRead.GetNullableNativeConverter <Date, int>()); } var logicalType = columnDescriptor.LogicalType; if (typeof(TLogical) == typeof(DateTime)) { switch (((TimestampLogicalType)logicalType).TimeUnit) { case TimeUnit.Millis: return((LogicalRead <DateTime, long> .Converter)((s, _, d, _) => LogicalRead.ConvertDateTimeMillis(s, d))); case TimeUnit.Micros: return((LogicalRead <DateTime, long> .Converter)((s, _, d, _) => LogicalRead.ConvertDateTimeMicros(s, d))); } } if (typeof(TLogical) == typeof(DateTimeNanos)) { return(LogicalRead.GetNativeConverter <DateTimeNanos, long>()); } if (typeof(TLogical) == typeof(DateTime?)) { switch (((TimestampLogicalType)logicalType).TimeUnit) { case TimeUnit.Millis: return((LogicalRead <DateTime?, long> .Converter)LogicalRead.ConvertDateTimeMillis); case TimeUnit.Micros: return((LogicalRead <DateTime?, long> .Converter)LogicalRead.ConvertDateTimeMicros); case TimeUnit.Nanos: return((LogicalRead <TPhysical?, TPhysical> .Converter)LogicalRead.ConvertNative); } } if (typeof(TLogical) == typeof(DateTimeNanos?)) { return(LogicalRead.GetNullableNativeConverter <DateTimeNanos, long>()); } if (typeof(TLogical) == typeof(TimeSpan)) { switch (((TimeLogicalType)logicalType).TimeUnit) { case TimeUnit.Millis: return((LogicalRead <TimeSpan, int> .Converter)((s, _, d, _) => LogicalRead.ConvertTimeSpanMillis(s, d))); case TimeUnit.Micros: return((LogicalRead <TimeSpan, long> .Converter)((s, _, d, _) => LogicalRead.ConvertTimeSpanMicros(s, d))); } } if (typeof(TLogical) == typeof(TimeSpanNanos)) { return(LogicalRead.GetNativeConverter <TimeSpanNanos, long>()); } if (typeof(TLogical) == typeof(TimeSpan?)) { var timeLogicalType = (TimeLogicalType)logicalType; var timeUnit = timeLogicalType.TimeUnit; switch (timeUnit) { case TimeUnit.Millis: return((LogicalRead <TimeSpan?, int> .Converter)LogicalRead.ConvertTimeSpanMillis); case TimeUnit.Micros: return((LogicalRead <TimeSpan?, long> .Converter)LogicalRead.ConvertTimeSpanMicros); } } if (typeof(TLogical) == typeof(TimeSpanNanos?)) { return(LogicalRead.GetNullableNativeConverter <TimeSpanNanos, long>()); } if (typeof(TLogical) == typeof(string)) { var byteArrayCache = new ByteArrayReaderCache <TPhysical, TLogical>(columnChunkMetaData); return(byteArrayCache.IsUsable ? (LogicalRead <string?, ByteArray> .Converter)((s, dl, d, del) => LogicalRead.ConvertString(s, dl, d, del, (ByteArrayReaderCache <ByteArray, string>)(object) byteArrayCache)) : LogicalRead.ConvertString); } if (typeof(TLogical) == typeof(byte[])) { // Do not reuse byte[] instances, as they are not immutable. // Perhaps an optional optimisation if there is demand for it? //return byteArrayCache.IsUsable // ? (LogicalRead<byte[], ByteArray>.Converter) ((s, dl, d, nl) => ConvertByteArray(s, dl, d, nl, (ByteArrayReaderCache<ByteArray, byte[]>) (object) byteArrayCache)) // : (LogicalRead<byte[], ByteArray>.Converter) ConvertByteArray; return((LogicalRead <byte[]?, ByteArray> .Converter)LogicalRead.ConvertByteArray); } throw new NotSupportedException($"unsupported logical system type {typeof(TLogical)} with logical type {logicalType}"); }
private static string ToString(ByteArray byteArray, ByteArrayReaderCache <ByteArray, string> byteArrayCache) { return(byteArrayCache.TryGetValue(byteArray, out var value) ? value : byteArrayCache.Add(byteArray, ToString(byteArray))); }