Fokko commented on code in PR #40: URL: https://github.com/apache/iceberg-python/pull/40#discussion_r1350771798
########## pyiceberg/avro/resolver.py: ########## @@ -233,7 +255,107 @@ def skip(self, decoder: BinaryDecoder) -> None: pass -class SchemaResolver(PrimitiveWithPartnerVisitor[IcebergType, Reader]): +class WriteSchemaResolver(PrimitiveWithPartnerVisitor[IcebergType, Writer]): + def schema(self, schema: Schema, expected_schema: Optional[IcebergType], result: Writer) -> Writer: + return result + + def struct(self, struct: StructType, provided_struct: Optional[IcebergType], field_writers: List[Writer]) -> Writer: + if not isinstance(provided_struct, StructType): + raise ResolveError(f"File/write schema are not aligned for struct, got {provided_struct}") + + provided_struct_positions: Dict[int, int] = {field.field_id: pos for pos, field in enumerate(provided_struct.fields)} + + results: List[Tuple[Optional[int], Writer]] = [] + iter(field_writers) + + for pos, write_field in enumerate(struct.fields): + if write_field.field_id in provided_struct_positions: + results.append((provided_struct_positions[write_field.field_id], field_writers[pos])) + else: + # There is a default value + if isinstance(write_field, NestedField) and write_field.write_default is not None: + # The field is not in the record, but there is a write default value + default_writer = DefaultWriter( + writer=visit(write_field.field_type, CONSTRUCT_WRITER_VISITOR), value=write_field.write_default Review Comment: Thanks, we can do that quite easily by saying that it only accepts an `L` that we already have in Typedef: ```python # Represents the literal value L = TypeVar("L", str, bool, int, float, bytes, UUID, Decimal, covariant=True) ``` I've also added a test: ```python with pytest.raises(pydantic_core.ValidationError) as exc_info: _ = NestedField( 1, "field", StringType(), required=True, write_default=(1, "a", True) ), assert "validation errors for NestedField" in str(exc_info.value) ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For additional commands, e-mail: issues-h...@iceberg.apache.org