internal DateTimeTransformer(IHostEnvironment host, string inputColumnName, string columnPrefix, DateTimeEstimator.HolidayList country) :
base(host.Register(nameof(DateTimeTransformer)))
{
host.Check(!CommonExtensions.OsIsCentOS7(), "CentOS7 is not supported");
_column = new LongTypedColumn(inputColumnName, columnPrefix);
_column.CreateTransformerFromEstimator(country);
}
internal DateTimeTransformer(IHostEnvironment host, string inputColumnName, string columnPrefix, DateTimeEstimator.HolidayList country, DataViewSchema schema) :
base(host.Register(nameof(DateTimeTransformer)))
{
_schema = schema;
if (_schema[inputColumnName].Type.RawType != typeof(long) &&
_schema[inputColumnName].Type.RawType != typeof(DateTime))
{
throw new Exception($"Unsupported type {_schema[inputColumnName].Type.RawType} for input column ${inputColumnName}. Only long and System.DateTime are supported");
}
_column = new LongTypedColumn(inputColumnName, columnPrefix);
_column.CreateTransformerFromEstimator(country);
}
// Factory method for SignatureLoadModel.
internal DateTimeTransformer(IHostEnvironment host, ModelLoadContext ctx) :
base(host.Register(nameof(DateTimeTransformer)))
{
Host.CheckValue(ctx, nameof(ctx));
host.Check(!CommonExtensions.OsIsCentOS7(), "CentOS7 is not supported");
ctx.CheckAtModel(GetVersionInfo());
// *** Binary format ***
// name of input column
// column prefix
// length of C++ state array
// C++ byte state array
_column = new LongTypedColumn(ctx.Reader.ReadString(), ctx.Reader.ReadString());
var dataLength = ctx.Reader.ReadInt32();
var data = ctx.Reader.ReadByteArray(dataLength);
_column.CreateTransformerFromSavedData(data);
}
