1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
use chrono::*;
use mysqlclient_sys as ffi;
use std::io::Write;
use std::os::raw as libc;
use std::{mem, slice};

use super::MYSQL_TIME;
use crate::deserialize::{self, FromSql};
use crate::mysql::{Mysql, MysqlValue};
use crate::serialize::{self, IsNull, Output, ToSql};
use crate::sql_types::{Date, Datetime, Time, Timestamp};

macro_rules! mysql_time_impls {
    ($ty:ty) => {
        impl ToSql<$ty, Mysql> for MYSQL_TIME {
            fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result {
                let bytes = unsafe {
                    let bytes_ptr = self as *const MYSQL_TIME as *const u8;
                    slice::from_raw_parts(bytes_ptr, mem::size_of::<MYSQL_TIME>())
                };
                out.write_all(bytes)?;
                Ok(IsNull::No)
            }
        }

        impl FromSql<$ty, Mysql> for MYSQL_TIME {
            fn from_sql(value: MysqlValue<'_>) -> deserialize::Result<Self> {
                value.time_value()
            }
        }
    };
}

mysql_time_impls!(Datetime);
mysql_time_impls!(Timestamp);
mysql_time_impls!(Time);
mysql_time_impls!(Date);

impl ToSql<Datetime, Mysql> for NaiveDateTime {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result {
        <NaiveDateTime as ToSql<Timestamp, Mysql>>::to_sql(self, out)
    }
}

impl FromSql<Datetime, Mysql> for NaiveDateTime {
    fn from_sql(bytes: MysqlValue<'_>) -> deserialize::Result<Self> {
        <NaiveDateTime as FromSql<Timestamp, Mysql>>::from_sql(bytes)
    }
}

impl ToSql<Timestamp, Mysql> for NaiveDateTime {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result {
        let mysql_time = MYSQL_TIME {
            year: self.year() as libc::c_uint,
            month: self.month() as libc::c_uint,
            day: self.day() as libc::c_uint,
            hour: self.hour() as libc::c_uint,
            minute: self.minute() as libc::c_uint,
            second: self.second() as libc::c_uint,
            second_part: libc::c_ulong::from(self.timestamp_subsec_micros()),
            neg: false,
            time_type: ffi::enum_mysql_timestamp_type::MYSQL_TIMESTAMP_DATETIME,
            time_zone_displacement: 0,
        };

        <MYSQL_TIME as ToSql<Timestamp, Mysql>>::to_sql(&mysql_time, out)
    }
}

impl FromSql<Timestamp, Mysql> for NaiveDateTime {
    fn from_sql(bytes: MysqlValue<'_>) -> deserialize::Result<Self> {
        let mysql_time = <MYSQL_TIME as FromSql<Timestamp, Mysql>>::from_sql(bytes)?;

        NaiveDate::from_ymd_opt(
            mysql_time.year as i32,
            mysql_time.month as u32,
            mysql_time.day as u32,
        )
        .and_then(|v| {
            v.and_hms_micro_opt(
                mysql_time.hour as u32,
                mysql_time.minute as u32,
                mysql_time.second as u32,
                mysql_time.second_part as u32,
            )
        })
        .ok_or_else(|| format!("Cannot parse this date: {:?}", mysql_time).into())
    }
}

impl ToSql<Time, Mysql> for NaiveTime {
    fn to_sql<W: Write>(&self, out: &mut serialize::Output<W, Mysql>) -> serialize::Result {
        let mysql_time = MYSQL_TIME {
            hour: self.hour() as libc::c_uint,
            minute: self.minute() as libc::c_uint,
            second: self.second() as libc::c_uint,
            day: 0,
            month: 0,
            second_part: 0,
            year: 0,
            neg: false,
            time_type: ffi::enum_mysql_timestamp_type::MYSQL_TIMESTAMP_TIME,
            time_zone_displacement: 0,
        };

        <MYSQL_TIME as ToSql<Time, Mysql>>::to_sql(&mysql_time, out)
    }
}

impl FromSql<Time, Mysql> for NaiveTime {
    fn from_sql(bytes: MysqlValue<'_>) -> deserialize::Result<Self> {
        let mysql_time = <MYSQL_TIME as FromSql<Time, Mysql>>::from_sql(bytes)?;
        NaiveTime::from_hms_opt(
            mysql_time.hour as u32,
            mysql_time.minute as u32,
            mysql_time.second as u32,
        )
        .ok_or_else(|| format!("Unable to convert {:?} to chrono", mysql_time).into())
    }
}

impl ToSql<Date, Mysql> for NaiveDate {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result {
        let mysql_time = MYSQL_TIME {
            year: self.year() as libc::c_uint,
            month: self.month() as libc::c_uint,
            day: self.day() as libc::c_uint,
            hour: 0,
            minute: 0,
            second: 0,
            second_part: 0,
            neg: false,
            time_type: ffi::enum_mysql_timestamp_type::MYSQL_TIMESTAMP_DATE,
            time_zone_displacement: 0,
        };

        <MYSQL_TIME as ToSql<Date, Mysql>>::to_sql(&mysql_time, out)
    }
}

impl FromSql<Date, Mysql> for NaiveDate {
    fn from_sql(bytes: MysqlValue<'_>) -> deserialize::Result<Self> {
        let mysql_time = <MYSQL_TIME as FromSql<Date, Mysql>>::from_sql(bytes)?;
        NaiveDate::from_ymd_opt(
            mysql_time.year as i32,
            mysql_time.month as u32,
            mysql_time.day as u32,
        )
        .ok_or_else(|| format!("Unable to convert {:?} to chrono", mysql_time).into())
    }
}

#[cfg(test)]
mod tests {
    extern crate chrono;
    extern crate dotenv;

    use self::chrono::{Duration, NaiveDate, NaiveTime, Utc};
    use self::dotenv::dotenv;

    use crate::dsl::{now, sql};
    use crate::prelude::*;
    use crate::select;
    use crate::sql_types::{Date, Datetime, Time, Timestamp};

    fn connection() -> MysqlConnection {
        dotenv().ok();

        let connection_url = ::std::env::var("MYSQL_UNIT_TEST_DATABASE_URL")
            .or_else(|_| ::std::env::var("MYSQL_DATABASE_URL"))
            .or_else(|_| ::std::env::var("DATABASE_URL"))
            .expect("DATABASE_URL must be set in order to run tests");
        MysqlConnection::establish(&connection_url).unwrap()
    }

    #[test]
    fn unix_epoch_encodes_correctly() {
        let connection = connection();
        let time = NaiveDate::from_ymd(1970, 1, 1).and_hms(0, 0, 0);
        let query = select(sql::<Timestamp>("CAST('1970-01-01' AS DATETIME)").eq(time));
        assert!(query.get_result::<bool>(&connection).unwrap());
        let query = select(sql::<Datetime>("CAST('1970-01-01' AS DATETIME)").eq(time));
        assert!(query.get_result::<bool>(&connection).unwrap());
    }

    #[test]
    fn unix_epoch_decodes_correctly() {
        let connection = connection();
        let time = NaiveDate::from_ymd(1970, 1, 1).and_hms(0, 0, 0);
        let epoch_from_sql =
            select(sql::<Timestamp>("CAST('1970-01-01' AS DATETIME)")).get_result(&connection);
        assert_eq!(Ok(time), epoch_from_sql);
        let epoch_from_sql =
            select(sql::<Datetime>("CAST('1970-01-01' AS DATETIME)")).get_result(&connection);
        assert_eq!(Ok(time), epoch_from_sql);
    }

    #[test]
    fn times_relative_to_now_encode_correctly() {
        let connection = connection();
        let time = Utc::now().naive_utc() + Duration::days(1);
        let query = select(now.lt(time));
        assert!(query.get_result::<bool>(&connection).unwrap());

        let time = Utc::now().naive_utc() - Duration::days(1);
        let query = select(now.gt(time));
        assert!(query.get_result::<bool>(&connection).unwrap());
    }

    #[test]
    fn times_of_day_encode_correctly() {
        let connection = connection();

        let midnight = NaiveTime::from_hms(0, 0, 0);
        let query = select(sql::<Time>("CAST('00:00:00' AS TIME)").eq(midnight));
        assert!(query.get_result::<bool>(&connection).unwrap());

        let noon = NaiveTime::from_hms(12, 0, 0);
        let query = select(sql::<Time>("CAST('12:00:00' AS TIME)").eq(noon));
        assert!(query.get_result::<bool>(&connection).unwrap());

        let roughly_half_past_eleven = NaiveTime::from_hms(23, 37, 4);
        let query = select(sql::<Time>("CAST('23:37:04' AS TIME)").eq(roughly_half_past_eleven));
        assert!(query.get_result::<bool>(&connection).unwrap());
    }

    #[test]
    fn times_of_day_decode_correctly() {
        let connection = connection();
        let midnight = NaiveTime::from_hms(0, 0, 0);
        let query = select(sql::<Time>("CAST('00:00:00' AS TIME)"));
        assert_eq!(Ok(midnight), query.get_result::<NaiveTime>(&connection));

        let noon = NaiveTime::from_hms(12, 0, 0);
        let query = select(sql::<Time>("CAST('12:00:00' AS TIME)"));
        assert_eq!(Ok(noon), query.get_result::<NaiveTime>(&connection));

        let roughly_half_past_eleven = NaiveTime::from_hms(23, 37, 4);
        let query = select(sql::<Time>("CAST('23:37:04' AS TIME)"));
        assert_eq!(
            Ok(roughly_half_past_eleven),
            query.get_result::<NaiveTime>(&connection)
        );
    }

    #[test]
    fn dates_encode_correctly() {
        let connection = connection();
        let january_first_2000 = NaiveDate::from_ymd(2000, 1, 1);
        let query = select(sql::<Date>("CAST('2000-1-1' AS DATE)").eq(january_first_2000));
        assert!(query.get_result::<bool>(&connection).unwrap());

        let january_first_2018 = NaiveDate::from_ymd(2018, 1, 1);
        let query = select(sql::<Date>("CAST('2018-1-1' AS DATE)").eq(january_first_2018));
        assert!(query.get_result::<bool>(&connection).unwrap());
    }

    #[test]
    fn dates_decode_correctly() {
        let connection = connection();
        let january_first_2000 = NaiveDate::from_ymd(2000, 1, 1);
        let query = select(sql::<Date>("CAST('2000-1-1' AS DATE)"));
        assert_eq!(
            Ok(january_first_2000),
            query.get_result::<NaiveDate>(&connection)
        );

        let january_first_2018 = NaiveDate::from_ymd(2018, 1, 1);
        let query = select(sql::<Date>("CAST('2018-1-1' AS DATE)"));
        assert_eq!(
            Ok(january_first_2018),
            query.get_result::<NaiveDate>(&connection)
        );

        connection
            .execute("SET sql_mode = (SELECT REPLACE(@@sql_mode, 'NO_ZERO_DATE,', ''))")
            .unwrap();
        let query = select(sql::<Date>("CAST('0000-00-00' AS DATE)"));
        assert!(query.get_result::<NaiveDate>(&connection).is_err());
    }
}