Enum ProjectionNullability 

pub enum ProjectionNullability {
    NonNull,
    Nullable,
    Unknown,
}

Conservative nullability classification for one output projection.

Variants

NonNull

Nullable

Unknown

Trait Implementations

impl Clone for ProjectionNullability

fn clone(&self) -> ProjectionNullability

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ProjectionNullability

impl Debug for ProjectionNullability

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ProjectionNullability

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ProjectionNullability

impl PartialEq for ProjectionNullability

fn eq(&self, other: &ProjectionNullability) -> 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 Serialize for ProjectionNullability

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ProjectionNullability