Enum orm::Value
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pub enum Value {
NULL,
Bytes(Vec<u8>),
Int(i64),
UInt(u64),
Float(f64),
Date(u16, u8, u8, u8, u8, u8, u32),
Time(bool, u32, u8, u8, u8, u32),
}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
NULLBytes(Vec<u8>)Int(i64)UInt(u64)Float(f64)Date(u16, u8, u8, u8, u8, u8, u32)year, month, day, hour, minutes, seconds, micro seconds
Time(bool, u32, u8, u8, u8, u32)is negative, days, hours, minutes, seconds, micro seconds
Methods
impl Value
Trait Implementations
impl Debug for Value
fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>
Formats the value using the given formatter.
impl PartialOrd<Value> for Value
fn partial_cmp(&self, __arg_0: &Value) -> Option<Ordering>
fn lt(&self, __arg_0: &Value) -> bool
fn le(&self, __arg_0: &Value) -> bool
fn gt(&self, __arg_0: &Value) -> bool
fn ge(&self, __arg_0: &Value) -> bool
impl FromValue for Value
type Intermediate = ValueIr
fn from_value(v: Value) -> Value
Will panic if could not convert v to Self.
fn from_value_opt(v: Value) -> Result<Value, Error>
Will return Err(Error::FromValueError(v)) if could not convert v to Self.
fn get_intermediate(v: Value) -> Result<Self::Intermediate, Error>
Will return Err(Error::FromValueError(v)) if v is not convertible to Self.
impl PartialEq<Value> for Value
fn eq(&self, __arg_0: &Value) -> bool
This method tests for self and other values to be equal, and is used by ==. Read more
fn ne(&self, __arg_0: &Value) -> bool
This method tests for !=.
impl Clone for Value
fn clone(&self) -> Value
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)1.0.0
Performs copy-assignment from source. Read more
impl<'a, T> From<&'a T> for Value where
T: ToValue,
T: ToValue,
impl<T> From<Option<T>> for Value where
T: Into<Value>,
T: Into<Value>,
impl From<u64> for Value
impl From<usize> for Value
impl From<f32> for Value
impl From<f64> for Value
impl From<bool> for Value
impl<'a> From<&'a [u8]> for Value
impl From<Vec<u8>> for Value
impl<'a> From<&'a str> for Value
impl From<String> for Value
impl From<NaiveDateTime> for Value
fn from(x: NaiveDateTime) -> Value
Performs the conversion.
impl From<NaiveDate> for Value
impl From<NaiveTime> for Value
impl From<Timespec> for Value
impl From<Duration> for Value
impl From<Duration> for Value
impl From<Value> for Value
impl<T> From<Serialized<T>> for Value where
T: Serialize,
T: Serialize,