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Merged
wangxiaoying merged 5 commits into from
Nov 7, 2022
Merged

added simple query implementation #387

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96f4513
added simple query implementation with tests
alswang18 Oct 31, 2022
2ff1254
made minor import changes
alswang18 Nov 4, 2022
640ddac
added pandas case statements for simple protocol and ran cargo fmt
alswang18 Nov 4, 2022
b7a7ae9
all tests passing and implemented macro for vectors
alswang18 Nov 7, 2022
8c18ed0
removed testing files
alswang18 Nov 7, 2022
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104 changes: 104 additions & 0 deletions connectorx-python/connectorx/tests/test_postgres.py
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Original file line number Diff line number Diff line change
Expand Up @@ -767,6 +767,110 @@ def test_postgres_types_cursor(postgres_url: str) -> None:
assert_frame_equal(df, expected, check_names=True)


def test_types_simple(postgres_url: str) -> None:
query = "SELECT test_date, test_timestamp, test_timestamptz, test_int16, test_int64, test_float32, test_numeric, test_bpchar, test_char, test_varchar, test_uuid, test_time, test_json, test_jsonb, test_bytea, test_enum::text, test_f4array, test_f8array, test_narray, test_i2array, test_i4array, test_i8array FROM test_types"
df = read_sql(postgres_url, query, protocol="simple")
expected = pd.DataFrame(
index=range(4),
data={
"test_date": pd.Series(
["1970-01-01", "2000-02-28", "2038-01-18", None], dtype="datetime64[ns]"
),
"test_timestamp": pd.Series(
[
"1970-01-01 00:00:01",
"2000-02-28 12:00:10",
"2038-01-18 23:59:59",
None,
],
dtype="datetime64[ns]",
),
"test_timestamptz": pd.Series(
[
"1970-01-01 00:00:01",
"2000-02-28 16:00:10",
"2038-01-18 15:59:59",
None,
],
dtype="datetime64[ns]",
),
"test_int16": pd.Series([0, 1, 2, 3], dtype="Int64"),
"test_int64": pd.Series(
[-9223372036854775808, 0, 9223372036854775807, None], dtype="Int64"
),
"test_float32": pd.Series(
[None, 3.1415926535, 2.71, -1e-37], dtype="float64"
),
"test_numeric": pd.Series([None, 521.34, 999.99, 0.00], dtype="float64"),
"test_bpchar": pd.Series(["a ", "bb ", "ccc ", None], dtype="object"),
"test_char": pd.Series(["a", "b", None, "d"], dtype="object"),
"test_varchar": pd.Series([None, "bb", "c", "defghijklm"], dtype="object"),
"test_uuid": pd.Series(
[
"86b494cc-96b2-11eb-9298-3e22fbb9fe9d",
"86b49b84-96b2-11eb-9298-3e22fbb9fe9d",
"86b49c42-96b2-11eb-9298-3e22fbb9fe9d",
None,
],
dtype="object",
),
"test_time": pd.Series(
["08:12:40", None, "23:00:10", "18:30:00"], dtype="object"
),
"test_json": pd.Series(
[
'{"customer":"John Doe","items":{"product":"Beer","qty":6}}',
'{"customer":"Lily Bush","items":{"product":"Diaper","qty":24}}',
'{"customer":"Josh William","items":{"product":"Toy Car","qty":1}}',
None,
],
dtype="object",
),
"test_jsonb": pd.Series(
[
'{"qty":6,"product":"Beer"}',
'{"qty":24,"product":"Diaper"}',
'{"qty":1,"product":"Toy Car"}',
None,
],
dtype="object",
),
"test_bytea": pd.Series(
[
None,
b"\xd0\x97\xd0\xb4\xd1\x80\xd0\xb0\xcc\x81\xd0\xb2\xd1\x81\xd1\x82\xd0\xb2\xd1\x83\xd0\xb9\xd1\x82\xd0\xb5",
b"",
b"\xf0\x9f\x98\x9c",
],
dtype="object",
),
"test_enum": pd.Series(
["happy", "very happy", "ecstatic", None], dtype="object"
),
"test_f4array": pd.Series(
[[], None, [123.123], [-1e-37, 1e37]], dtype="object"
),
"test_f8array": pd.Series(
[[], None, [1e-307, 1e308], [0.000234, -12.987654321]], dtype="object"
),
"test_narray": pd.Series(
[[], None, [521.34], [0.12, 333.33, 22.22]], dtype="object"
),
"test_i2array": pd.Series(
[[-1, 0, 1], [], [-32768, 32767], None], dtype="object"
),
"test_i4array": pd.Series(
[[-1, 0, 1123], [], [-2147483648, 2147483647], None], dtype="object"
),
"test_i8array": pd.Series(
[[-9223372036854775808, 9223372036854775807], [], [0], None],
dtype="object",
),
},
)
assert_frame_equal(df, expected, check_names=True)


def test_empty_result(postgres_url: str) -> None:
query = "SELECT * FROM test_table where test_int < -100"
df = read_sql(postgres_url, query)
Expand Down
5 changes: 4 additions & 1 deletion connectorx-python/src/pandas/transports/postgres.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,8 @@ use chrono::{DateTime, NaiveDate, NaiveDateTime, NaiveTime, Utc};
use connectorx::{
impl_transport,
sources::postgres::{
BinaryProtocol, CSVProtocol, CursorProtocol, PostgresSource, PostgresTypeSystem,
BinaryProtocol, CSVProtocol, CursorProtocol, SimpleProtocol,
PostgresSource, PostgresTypeSystem,
},
typesystem::TypeConversion,
};
Expand Down Expand Up @@ -64,6 +65,8 @@ impl_postgres_transport!(CSVProtocol, NoTls);
impl_postgres_transport!(CSVProtocol, MakeTlsConnector);
impl_postgres_transport!(CursorProtocol, NoTls);
impl_postgres_transport!(CursorProtocol, MakeTlsConnector);
impl_postgres_transport!(SimpleProtocol, NoTls);
impl_postgres_transport!(SimpleProtocol, MakeTlsConnector);

impl<'py, P, C> TypeConversion<HashMap<String, Option<String>>, String>
for PostgresPandasTransport<'py, P, C>
Expand Down
30 changes: 30 additions & 0 deletions connectorx/src/get_arrow.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ use crate::sources::mysql::{BinaryProtocol as MySQLBinaryProtocol, TextProtocol}
#[cfg(feature = "src_postgres")]
use crate::sources::postgres::{
rewrite_tls_args, BinaryProtocol as PgBinaryProtocol, CSVProtocol, CursorProtocol,
SimpleProtocol,
};
use crate::{prelude::*, sql::CXQuery};
use fehler::{throw, throws};
Expand Down Expand Up @@ -114,6 +115,35 @@ pub fn get_arrow(
);
dispatcher.run()?;
}
("simple", Some(tls_conn)) => {
let sb = PostgresSource::<SimpleProtocol, MakeTlsConnector>::new(
config,
tls_conn,
queries.len(),
)?;
let dispatcher = Dispatcher::<
_,
_,
PostgresArrowTransport<SimpleProtocol, MakeTlsConnector>,
>::new(
sb, &mut destination, queries, origin_query
);
debug!("Running dispatcher");
dispatcher.run()?;
}
("simple", None) => {
let sb =
PostgresSource::<SimpleProtocol, NoTls>::new(config, NoTls, queries.len())?;
let dispatcher = Dispatcher::<
_,
_,
PostgresArrowTransport<SimpleProtocol, NoTls>,
>::new(
sb, &mut destination, queries, origin_query
);
debug!("Running dispatcher");
dispatcher.run()?;
}
_ => unimplemented!("{} protocol not supported", protocol),
}
}
Expand Down
31 changes: 31 additions & 0 deletions connectorx/src/get_arrow2.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ use crate::sources::mysql::{BinaryProtocol as MySQLBinaryProtocol, TextProtocol}
#[cfg(feature = "src_postgres")]
use crate::sources::postgres::{
rewrite_tls_args, BinaryProtocol as PgBinaryProtocol, CSVProtocol, CursorProtocol,
SimpleProtocol,
};
use crate::{prelude::*, sql::CXQuery};
use fehler::{throw, throws};
Expand Down Expand Up @@ -114,6 +115,36 @@ pub fn get_arrow2(
);
dispatcher.run()?;
}
("simple", Some(tls_conn)) => {
let sb = PostgresSource::<SimpleProtocol, MakeTlsConnector>::new(
config,
tls_conn,
queries.len(),
)?;
let dispatcher = Dispatcher::<
_,
_,
PostgresArrow2Transport<SimpleProtocol, MakeTlsConnector>,
>::new(
sb, &mut destination, queries, origin_query
);
debug!("Running dispatcher");
dispatcher.run()?;
}
("simple", None) => {
let sb =
PostgresSource::<SimpleProtocol, NoTls>::new(config, NoTls, queries.len())?;
let dispatcher = Dispatcher::<
_,
_,
PostgresArrow2Transport<SimpleProtocol, NoTls>,
>::new(
sb, &mut destination, queries, origin_query
);
debug!("Running dispatcher");
dispatcher.run()?;
}

_ => unimplemented!("{} protocol not supported", protocol),
}
}
Expand Down
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