Struct arrow_json::reader::ReaderBuilder

pub struct ReaderBuilder { /* private fields */ }

A builder for Reader and Decoder

Implementations

impl ReaderBuilder

pub fn new(schema: SchemaRef) -> Self

Create a new ReaderBuilder with the provided SchemaRef

This could be obtained using infer_json_schema if not known

Any columns not present in schema will be ignored, unless strict_mode is set to true. In this case, an error is returned when a column is missing from schema.

pub fn with_batch_size(self, batch_size: usize) -> Self

Sets the batch size in rows to read

pub fn coerce_primitive(self, coerce_primitive: bool) -> Self

👎Deprecated: Use with_coerce_primitive

Sets if the decoder should coerce primitive values (bool and number) into string when the Schema’s column is Utf8 or LargeUtf8.

pub fn with_coerce_primitive(self, coerce_primitive: bool) -> Self

Sets if the decoder should coerce primitive values (bool and number) into string when the Schema’s column is Utf8 or LargeUtf8.

pub fn with_strict_mode(self, strict_mode: bool) -> Self

Sets if the decoder should return an error if it encounters a column not present in schema

pub fn build<R: BufRead>(self, reader: R) -> Result<Reader<R>, ArrowError>

Create a Reader with the provided BufRead

pub fn build_decoder(self) -> Result<Decoder, ArrowError>

Create a Decoder