Enum Passive 

pub enum Passive<T: AsValue> {
    Set(T),
    NotSet,
}

Wrapper marking whether a column should be considered set or skipped (passive) on INSERT.

Variants

Set(T)

Active value.

NotSet

Skip during value emission (DEFAULT used by SqlWriter).

Implementations

impl<T: AsValue> Passive<T>

pub fn new(value: T) -> Self

pub fn expect(self, msg: &str) -> T

pub fn unwrap(self) -> T

Trait Implementations

impl<T: AsValue> AsValue for Passive<T>

fn as_empty_value() -> Value

Return a NULL equivalent variant for this type.

fn as_value(self) -> Value

Convert into owned Value.

fn try_from_value(value: Value) -> Result<Self>

Try to convert a dynamic Value into Self.

fn parse(input: impl AsRef<str>) -> Result<Self>

where Self: Sized,

Parse a full string into Self.

impl<T> Clone for Passive<T>

where T: Clone + AsValue,

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug + AsValue> Debug for Passive<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: AsValue> Default for Passive<T>

fn default() -> Passive<T>

Returns the “default value” for a type.

impl<T: AsValue> From<T> for Passive<T>

fn from(value: T) -> Self

Converts to this type from the input type.

impl<T: Hash + AsValue> Hash for Passive<T>

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: PartialEq + AsValue> PartialEq for Passive<T>

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: Eq + AsValue> Eq for Passive<T>