Enum orm::Value [] [src]

pub enum Value {
    NULL,
    Bytes(Vec<u8>),
    Int(i64),
    UInt(u64),
    Float(f64),
    Date(u16u8u8u8u8u8u32),
    Time(boolu32u8u8u8u32),
}

Value enumerates possible values in mysql cells. Also Value used to fill prepared statements.

Note that to receive something different than Value::NULL or Value::Bytes from mysql you should use prepared statements.

If you want to get something more useful from Value you should implement FromValue on it. To get T: FromValue from nullable value you should rely on FromValue implemented on Option<T>.

To convert something to Value you should implement Into<Value> for it.

use mysql::value::from_row;
let mut conn = pool.get_conn().unwrap();

let result = conn.prep_exec("SELECT ? * ?", (20i32, 0.8_f32)).unwrap();
for row in result {
    let c = from_row::<f32>(row.unwrap());
    assert_eq!(c, 16.0_f32);
}

Variants

year, month, day, hour, minutes, seconds, micro seconds

is negative, days, hours, minutes, seconds, micro seconds

Methods

impl Value
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Get correct string representation of a mysql value

Trait Implementations

impl ConvIr<Value> for ValueIr
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impl PartialEq<Value> for Value
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This method tests for self and other values to be equal, and is used by ==. Read more

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This method tests for !=.

impl Debug for Value
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Formats the value using the given formatter. Read more

impl From<String> for Value
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Performs the conversion.

impl From<usize> for Value
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Performs the conversion.

impl From<i32> for Value
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Performs the conversion.

impl From<[u8; 27]> for Value
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Performs the conversion.

impl From<[u8; 6]> for Value
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Performs the conversion.

impl From<[u8; 10]> for Value
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Performs the conversion.

impl From<[u8; 14]> for Value
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Performs the conversion.

impl<'a, T> From<&'a T> for Value where
    T: ToValue
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Performs the conversion.

impl From<Value> for Value
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Performs the conversion.

impl From<u16> for Value
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Performs the conversion.

impl From<isize> for Value
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Performs the conversion.

impl From<[u8; 12]> for Value
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Performs the conversion.

impl From<Vec<u8>> for Value
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Performs the conversion.

impl From<[u8; 31]> for Value
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Performs the conversion.

impl From<[u8; 15]> for Value
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Performs the conversion.

impl From<[u8; 25]> for Value
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Performs the conversion.

impl From<Timespec> for Value
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Performs the conversion.

impl From<[u8; 2]> for Value
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Performs the conversion.

impl From<[u8; 16]> for Value
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Performs the conversion.

impl From<[u8; 8]> for Value
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Performs the conversion.

impl From<[u8; 28]> for Value
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Performs the conversion.

impl From<[u8; 23]> for Value
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Performs the conversion.

impl From<[u8; 13]> for Value
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Performs the conversion.

impl From<Duration> for Value
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Performs the conversion.

impl From<[u8; 11]> for Value
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Performs the conversion.

impl From<NaiveDateTime> for Value
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Performs the conversion.

impl From<[u8; 29]> for Value
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Performs the conversion.

impl From<[u8; 24]> for Value
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Performs the conversion.

impl<T> From<Option<T>> for Value where
    T: Into<Value>, 
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Performs the conversion.

impl From<f32> for Value
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Performs the conversion.

impl From<NaiveTime> for Value
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Performs the conversion.

impl From<[u8; 4]> for Value
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Performs the conversion.

impl From<[u8; 30]> for Value
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Performs the conversion.

impl From<[u8; 0]> for Value
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Performs the conversion.

impl From<i16> for Value
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Performs the conversion.

impl From<bool> for Value
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Performs the conversion.

impl From<NaiveDate> for Value
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Performs the conversion.

impl From<[u8; 1]> for Value
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Performs the conversion.

impl From<[u8; 19]> for Value
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Performs the conversion.

impl From<[u8; 18]> for Value
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Performs the conversion.

impl From<[u8; 26]> for Value
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Performs the conversion.

impl From<f64> for Value
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Performs the conversion.

impl From<[u8; 20]> for Value
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Performs the conversion.

impl From<[u8; 7]> for Value
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Performs the conversion.

impl From<Duration> for Value
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Performs the conversion.

impl From<u32> for Value
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Performs the conversion.

impl From<[u8; 9]> for Value
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Performs the conversion.

impl From<[u8; 17]> for Value
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Performs the conversion.

impl From<i64> for Value
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Performs the conversion.

impl From<[u8; 21]> for Value
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Performs the conversion.

impl From<[u8; 3]> for Value
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Performs the conversion.

impl From<[u8; 32]> for Value
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Performs the conversion.

impl<T> From<Serialized<T>> for Value where
    T: Serialize
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Performs the conversion.

impl From<u8> for Value
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Performs the conversion.

impl From<[u8; 22]> for Value
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Performs the conversion.

impl From<[u8; 5]> for Value
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Performs the conversion.

impl From<u64> for Value
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Performs the conversion.

impl<'a> From<&'a str> for Value
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Performs the conversion.

impl From<i8> for Value
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Performs the conversion.

impl<'a> From<&'a [u8]> for Value
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Performs the conversion.

impl Clone for Value
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Returns a copy of the value. Read more

1.0.0
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Performs copy-assignment from source. Read more

impl PartialOrd<Value> for Value
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This method returns an ordering between self and other values if one exists. Read more

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This method tests less than (for self and other) and is used by the < operator. Read more

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This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

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This method tests greater than (for self and other) and is used by the > operator. Read more

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This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

impl Into<Value> for Uuid
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Performs the conversion.

impl FromValue for Value
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Will panic if could not convert v to Self.

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Will return Err(Error::FromValueError(v)) if could not convert v to Self.

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Will return Err(Error::FromValueError(v)) if v is not convertible to Self.

Auto Trait Implementations

impl Send for Value

impl Sync for Value