datasources-sqlite 0.1.23

SQLite datasource provider
Documentation 
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

use datasources::{Result, TypeConverter, Value};
use uuid::Uuid;

pub struct UuidConverter;

impl TypeConverter<Value, Value> for UuidConverter {
    fn convert(&self, from: &Value) -> Result<Value> {
        Ok(match from {
            Value::Text(text) => Uuid::parse_str(text)
                .map(Value::Uuid)
                .unwrap_or_else(|_| from.clone()),
            other => other.clone(),
        })
    }

    fn reverse_convert(&self, to: &Value) -> Result<Value> {
        Ok(match to {
            Value::Uuid(id) => Value::Text(id.to_string()),
            other => other.clone(),
        })
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use datasources::Value;

    #[test]
    fn maps_uuid() {
        let converter = UuidConverter;
        let native = converter
            .convert(&Value::from("550e8400-e29b-41d4-a716-446655440000"))
            .unwrap();
        assert!(matches!(native, Value::Uuid(_)));
        assert_eq!(
            converter.reverse_convert(&native).unwrap(),
            Value::from("550e8400-e29b-41d4-a716-446655440000")
        );
        assert_eq!(
            converter.convert(&Value::from("nope")).unwrap(),
            Value::from("nope")
        );
        assert_eq!(converter.convert(&Value::Int(1)).unwrap(), Value::Int(1));
        assert_eq!(
            converter.reverse_convert(&Value::Int(1)).unwrap(),
            Value::Int(1)
        );
    }
}