public static void AdjustSchema(Thrift.SchemaElement schema, Type systemType)
{
if (IsPrimitiveNullable(systemType))
{
throw new ArgumentException($"Type '{systemType}' in column '{schema.Name}' is a nullable type. Please pass either a class or a primitive type.", nameof(systemType));
}
TypePrimitive tp = TypePrimitive.Find(systemType);
schema.Type = tp.ThriftType;
if (tp.ThriftAnnotation != null)
{
schema.Converted_type = tp.ThriftAnnotation.Value;
}
//todo: not the best place for it, but it's a special case at the moment
if (systemType == typeof(decimal))
{
schema.Precision = 38;
schema.Scale = 18;
}
}
public TSchemaElement CreateSchemaElement(string name, Type systemType,
out Type elementType,
out string path)
{
var th = new TSchemaElement(name);
if (TypeFactory.TryExtractEnumerableType(systemType, out Type baseType))
{
elementType = baseType;
path = BuildRepeatablePath(name);
th.Repetition_type = Thrift.FieldRepetitionType.REPEATED;
}
else if (typeof(Row) == systemType)
{
//this is a hierarchy, therefore can be a fake type
elementType = typeof(int);
path = null;
th.Repetition_type = Thrift.FieldRepetitionType.OPTIONAL;
}
else
{
if (TryGetNonNullableType(systemType, out Type nonNullableSystemType))
{
elementType = nonNullableSystemType;
th.Repetition_type = Thrift.FieldRepetitionType.OPTIONAL;
}
else if (systemType.GetTypeInfo().IsClass)
{
//reference types are always nullable
elementType = systemType;
th.Repetition_type = Thrift.FieldRepetitionType.OPTIONAL;
}
else
{
elementType = systemType;
//this might be changed later or if column has nulls (on write)
th.Repetition_type = Thrift.FieldRepetitionType.REQUIRED;
}
path = null;
}
//adjust schema
TypePrimitive tp = TypePrimitive.Find(elementType);
th.Type = tp.ThriftType;
if (tp.ThriftAnnotation != null)
{
th.Converted_type = tp.ThriftAnnotation.Value;
}
//todo: not the best place for it, but it's a special case at the moment
if (systemType == typeof(decimal))
{
th.Precision = 38;
th.Scale = 18;
th.Type_length = 16; //set to default type length to be used when no elements are added
}
return(th);
}
