sqlx_postgres/types/chrono/
datetime.rsuse crate::decode::Decode;
use crate::encode::{Encode, IsNull};
use crate::error::BoxDynError;
use crate::types::Type;
use crate::{PgArgumentBuffer, PgHasArrayType, PgTypeInfo, PgValueFormat, PgValueRef, Postgres};
use chrono::{
DateTime, Duration, FixedOffset, Local, NaiveDate, NaiveDateTime, Offset, TimeZone, Utc,
};
use std::mem;
impl Type<Postgres> for NaiveDateTime {
fn type_info() -> PgTypeInfo {
PgTypeInfo::TIMESTAMP
}
}
impl<Tz: TimeZone> Type<Postgres> for DateTime<Tz> {
fn type_info() -> PgTypeInfo {
PgTypeInfo::TIMESTAMPTZ
}
}
impl PgHasArrayType for NaiveDateTime {
fn array_type_info() -> PgTypeInfo {
PgTypeInfo::TIMESTAMP_ARRAY
}
}
impl<Tz: TimeZone> PgHasArrayType for DateTime<Tz> {
fn array_type_info() -> PgTypeInfo {
PgTypeInfo::TIMESTAMPTZ_ARRAY
}
}
impl Encode<'_, Postgres> for NaiveDateTime {
fn encode_by_ref(&self, buf: &mut PgArgumentBuffer) -> Result<IsNull, BoxDynError> {
let micros = (*self - postgres_epoch_datetime())
.num_microseconds()
.ok_or_else(|| format!("NaiveDateTime out of range for Postgres: {self:?}"))?;
Encode::<Postgres>::encode(micros, buf)
}
fn size_hint(&self) -> usize {
mem::size_of::<i64>()
}
}
impl<'r> Decode<'r, Postgres> for NaiveDateTime {
fn decode(value: PgValueRef<'r>) -> Result<Self, BoxDynError> {
Ok(match value.format() {
PgValueFormat::Binary => {
let us = Decode::<Postgres>::decode(value)?;
postgres_epoch_datetime() + Duration::microseconds(us)
}
PgValueFormat::Text => {
let s = value.as_str()?;
NaiveDateTime::parse_from_str(
s,
if s.contains('+') {
"%Y-%m-%d %H:%M:%S%.f%#z"
} else {
"%Y-%m-%d %H:%M:%S%.f"
},
)?
}
})
}
}
impl<Tz: TimeZone> Encode<'_, Postgres> for DateTime<Tz> {
fn encode_by_ref(&self, buf: &mut PgArgumentBuffer) -> Result<IsNull, BoxDynError> {
Encode::<Postgres>::encode(self.naive_utc(), buf)
}
fn size_hint(&self) -> usize {
mem::size_of::<i64>()
}
}
impl<'r> Decode<'r, Postgres> for DateTime<Local> {
fn decode(value: PgValueRef<'r>) -> Result<Self, BoxDynError> {
let fixed = <DateTime<FixedOffset> as Decode<Postgres>>::decode(value)?;
Ok(Local.from_utc_datetime(&fixed.naive_utc()))
}
}
impl<'r> Decode<'r, Postgres> for DateTime<Utc> {
fn decode(value: PgValueRef<'r>) -> Result<Self, BoxDynError> {
let fixed = <DateTime<FixedOffset> as Decode<Postgres>>::decode(value)?;
Ok(Utc.from_utc_datetime(&fixed.naive_utc()))
}
}
impl<'r> Decode<'r, Postgres> for DateTime<FixedOffset> {
fn decode(value: PgValueRef<'r>) -> Result<Self, BoxDynError> {
Ok(match value.format() {
PgValueFormat::Binary => {
let naive = <NaiveDateTime as Decode<Postgres>>::decode(value)?;
Utc.fix().from_utc_datetime(&naive)
}
PgValueFormat::Text => {
let s = value.as_str()?;
DateTime::parse_from_str(
s,
if s.contains('+') || s.contains('-') {
"%Y-%m-%d %H:%M:%S%.f%#z"
} else {
"%Y-%m-%d %H:%M:%S%.f"
},
)?
}
})
}
}
#[inline]
fn postgres_epoch_datetime() -> NaiveDateTime {
NaiveDate::from_ymd_opt(2000, 1, 1)
.expect("expected 2000-01-01 to be a valid NaiveDate")
.and_hms_opt(0, 0, 0)
.expect("expected 2000-01-01T00:00:00 to be a valid NaiveDateTime")
}