connectorx/transports/
bigquery_arrow.rs

1//! Transport from BigQuery Source to Arrow Destination.
2
3use crate::{
4    destinations::arrow::{typesystem::ArrowTypeSystem, ArrowDestination, ArrowDestinationError},
5    impl_transport,
6    sources::bigquery::{BigQuerySource, BigQuerySourceError, BigQueryTypeSystem},
7    typesystem::TypeConversion,
8};
9use chrono::{DateTime, NaiveDate, NaiveDateTime, NaiveTime, Utc};
10use thiserror::Error;
11
12#[derive(Error, Debug)]
13pub enum BigQueryArrowTransportError {
14    #[error(transparent)]
15    Source(#[from] BigQuerySourceError),
16
17    #[error(transparent)]
18    Destination(#[from] ArrowDestinationError),
19
20    #[error(transparent)]
21    ConnectorX(#[from] crate::errors::ConnectorXError),
22}
23
24/// Convert BigQuery data types to Arrow data types.
25pub struct BigQueryArrowTransport;
26
27impl_transport!(
28    name = BigQueryArrowTransport,
29    error = BigQueryArrowTransportError,
30    systems = BigQueryTypeSystem => ArrowTypeSystem,
31    route = BigQuerySource => ArrowDestination,
32    mappings = {
33        { Bool[bool]                 => Boolean[bool]             | conversion auto }
34        { Boolean[bool]              => Boolean[bool]             | conversion none }
35        { Int64[i64]                 => Int64[i64]                | conversion auto }
36        { Integer[i64]               => Int64[i64]                | conversion none }
37        { Float64[f64]               => Float64[f64]              | conversion auto }
38        { Float[f64]                 => Float64[f64]              | conversion none }
39        { Numeric[f64]               => Float64[f64]              | conversion none }
40        { Bignumeric[f64]            => Float64[f64]              | conversion none }
41        { String[String]             => LargeUtf8[String]         | conversion auto }
42        { Bytes[String]              => LargeUtf8[String]         | conversion none }
43        { Date[NaiveDate]            => Date32[NaiveDate]         | conversion auto }
44        { Datetime[NaiveDateTime]    => Date64[NaiveDateTime]     | conversion auto }
45        { Time[NaiveTime]            => Time64[NaiveTime]         | conversion auto }
46        { Timestamp[DateTime<Utc>]   => DateTimeTz[DateTime<Utc>] | conversion auto }
47    }
48);
connectorx/transports/bigquery_arrow.rs

connectorx/transports/
bigquery_arrow.rs
