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
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
#![warn(rust_2018_idioms)]
#![doc(html_logo_url = "https://elephantry.github.io/logo.png")]

/*!
 * | SQL type                    | Rust type                | Feature |
 * |-----------------------------|--------------------------|---------|
 * | `bigint`                    | `i64`                    |         |
 * | `bit`                       | `u8`                     | bit     |
 * | `bit varying`               | `bit_vec::BitVec`        | bit     |
 * | `boolean`                   | `bool`                   |         |
 * | `box`                       | `elephantry::Box`        | geo     |
 * | `bytea`                     | `elephantry::Bytea`      |         |
 * | `char`                      | `char`                   |         |
 * | `varchar`                   | `String`                 |         |
 * | `cidr`                      | `ipnetwork::IpNetwork`   | net     |
 * | `circle`                    | `elephantry::Circle`     | geo     |
 * | `date`                      | `chrono::NaiveDate`      | date    |
 * | `double precision`/`float8` | `f64`                    |         |
 * | `hstore`                    | `elephantry::Hstore`     |         |
 * | `inet`                      | `std::net::IpAddr`       | net     |
 * | `integer`                   | `i32`                    |         |
 * | `json`/`jsonb`              | `serde_json::Value`      | json    |
 * | `line`                      | `elephantry::Line`       | geo     |
 * | `lseg`                      | `elephantry::Segment`    | geo     |
 * | `null`                      | `()`                     |         |
 * | `macaddr`                   | `macaddr::MacAddr6`      | net     |
 * | `macaddr8`                  | `macaddr::MacAddr8`      | net     |
 * | `money`                     | `f32`                    |         |
 * | `numeric`                   | `bigdecimal::BigDecimal` | numeric |
 * | `path`                      | `elephantry::Path`       | geo     |
 * | `point`                     | `elephantry::Point`      | geo     |
 * | `polygon`                   | `elephantry::Polygon`    | geo     |
 * | `real`/`float4`             | `f32`                    |         |
 * | `record`                    | `tuple`                  |         |
 * | `smallint`                  | `i16`                    |         |
 * | `text`                      | `String`                 |         |
 * | `time`                      | `elephantry::Time`       | time    |
 * | `timetz`                    | `elephantry::TimeTz`     | time    |
 * | `timestamp`                 | `chrono::NaiveDateTime`  | date    |
 * | `timestamptz`               | `chrono::DateTime`       | date    |
 * | `uuid`                      | `uuid::Uuid`             | uuid    |
 * | `xml`                       | `xmltree::Element`       | xml     |
 */

/** database inspection module. */
pub mod inspect;
/** libpq abstraction layer. */
pub mod pq;
#[cfg(feature = "r2d2")]
pub mod r2d2;
#[cfg(feature = "rocket")]
pub mod rocket;
pub mod transaction;

mod r#async;
mod config;
mod connection;
mod entity;
mod errors;
mod from_sql;
mod model;
mod pager;
mod pool;
mod projection;
mod rows;
mod sql;
mod structure;
mod to_sql;
mod tuple;
mod r#where;

pub use crate::config::*;
pub use connection::*;
pub use elephantry_derive::*;
pub use entity::*;
pub use errors::*;
pub use from_sql::*;
pub use model::*;
pub use pager::*;
pub use pool::*;
pub use projection::*;
pub use r#async::*;
pub use r#where::*;
pub use rows::*;
pub use sql::*;
pub use structure::*;
pub use to_sql::*;
pub use transaction::Transaction;
pub use tuple::*;

/**
 * Easily create pk argument for where clause, including [`find_by_pk`]
 * function.
 *
 * ```
 * # #[macro_use] extern crate elephantry;
 * # fn main() {
 * # let uuid = "";
 * # let name = "";
 * pk!(uuid);
 * pk![uuid, name];
 * pk!{uuid => "uuid", name => "name"};
 * # }
 * ```
 *
 * [`find_by_pk`]: crate::Connection::find_by_pk
 */
#[macro_export]
macro_rules! pk {
    ($($pk:ident),+ $(,)?) => {
        $crate::pk!($(
            $pk => $pk,
        )*)
    };

    ($($key:expr => $value:expr),+ $(,)?) => {{
        let mut hash = std::collections::HashMap::new();

        $(
            hash.insert(stringify!($key), &$value as &dyn $crate::ToSql);
        )*

        hash
    }}
}

/**
 * Likes [`pk`] macro but for value argument, including [`update_by_pk`]
 * function.
 *
 * [`pk`]: crate::pk
 * [`update_by_pk`]: crate::Connection::update_by_pk
 */
#[macro_export]
macro_rules! values {
    ($($pk:ident),+ $(,)?) => {
        $crate::values!($(
            $pk => $pk,
        )*)
    };

    ($($key:expr => $value:expr),+ $(,)?) => {{
        let mut hash = std::collections::HashMap::new();

        $(
            hash.insert(stringify!($key).to_string(), &$value as &dyn $crate::ToSql);
        )*

        hash
    }}
}

#[cfg(test)]
mod test {
    static INIT: std::sync::Once = std::sync::Once::new();

    #[macro_export]
    macro_rules! sql_test_from {
        ($sql_type:ident, $rust_type:ty, $tests:expr) => {
            use std::collections::HashMap;
            #[allow(unused_imports)]
            use std::convert::TryFrom;

            #[test]
            fn from_text() -> crate::Result {
                let conn = crate::test::new_conn()?;

                for (value, expected) in &$tests {
                    let result = conn.execute(&format!(
                        "select {}::{} as actual",
                        value,
                        stringify!($sql_type)
                    ))?;
                    assert_eq!(result.get(0).get::<$rust_type>("actual"), *expected);
                }

                Ok(())
            }

            #[test]
            fn from_binary() -> crate::Result {
                let conn = crate::test::new_conn()?;

                for (value, expected) in &$tests {
                    let result = conn.query::<HashMap<String, $rust_type>>(
                        &format!("select {}::{} as actual", value, stringify!($sql_type)),
                        &[],
                    )?;
                    assert_eq!(result.get(0).get("actual").unwrap(), expected);
                }

                Ok(())
            }
        };
    }

    #[macro_export]
    macro_rules! sql_test_to {
        ($sql_type:ident, $rust_type:ty, $tests:expr) => {
            #[test]
            fn to() -> crate::Result {
                use std::collections::HashMap;
                let conn = crate::test::new_conn()?;

                for (_, value) in &$tests {
                    let result = conn.query::<HashMap<String, String>>(
                        &format!("select $1::{}", stringify!($sql_type)),
                        &[value],
                    );
                    dbg!(&result);
                    assert!(result.is_ok());
                }

                Ok(())
            }
        };
    }

    #[macro_export]
    macro_rules! sql_test {
        ($sql_type:ident, $rust_type:ty, $tests:expr) => {
            mod $sql_type {
                $crate::sql_test_from!($sql_type, $rust_type, $tests);
                $crate::sql_test_to!($sql_type, $rust_type, $tests);
            }
        };
    }

    pub fn dsn() -> String {
        std::env::var("DATABASE_URL").unwrap_or_else(|_| "host=localhost".to_string())
    }

    pub fn new_conn() -> crate::Result<crate::Pool> {
        INIT.call_once(|| {
            pretty_env_logger::init();
        });

        let conn = crate::Pool::new(&dsn())?;
        conn.execute("create extension if not exists hstore")?;
        conn.execute("set lc_monetary to 'en_US.UTF-8';")?;
        conn.execute(
            "
do $$
begin
    if not exists (select 1 from pg_type where typname = 'compfoo')
    then
        create type compfoo as (f1 int, f2 text);
    end if;

    if not exists (select 1 from pg_type where typname = 'mood')
    then
        create type mood as enum ('Sad', 'Ok', 'Happy');
    end if;

    if not exists (select 1 from pg_type where typname = 'us_postal_code')
    then
        create domain us_postal_code as text
        check(
            value ~ '^\\d{5}$'
            or value ~ '^\\d{5}-\\d{4}$'
        );
    end if;
end$$;
        ",
        )?;

        Ok(conn)
    }

    #[test]
    fn test_pk_one() {
        let uuid = "1234";
        let pk = crate::pk!(uuid);

        assert_eq!(pk.len(), 1);
        assert!(pk.contains_key("uuid"));
    }

    #[test]
    fn test_pk_multi() {
        let uuid = "1234";
        let name = "name";
        let pk = crate::pk![uuid, name,];

        assert_eq!(pk.len(), 2);
        assert!(pk.contains_key("uuid"));
        assert!(pk.contains_key("name"));
    }

    #[test]
    fn test_pk_hash() {
        let pk = crate::pk! {
            uuid => "1234",
            name => "name",
        };

        assert_eq!(pk.len(), 2);
        assert!(pk.contains_key("uuid"));
        assert!(pk.contains_key("name"));
    }

    #[derive(elephantry_derive::Entity)]
    #[elephantry(
        internal,
        model = "Model",
        structure = "Structure",
        relation = "entity"
    )]
    pub struct Entity {
        #[elephantry(pk, column = "employee_id")]
        pub id: i32,
        pub first_name: String,
        #[elephantry(default)]
        pub last_name: String,
    }
}