Enum Field 

pub enum Field {
    All,
    Single(Selector),
}

Variants

All

The * in SELECT * FROM ...

Single(Selector)

The ‘rating’ in SELECT rating FROM ...

Implementations

impl Field

pub fn walk_revisioned_variant_name( wire_revision: u16, discriminant: u32, ) -> Option<&'static str>

Resolve a wire discriminant at wire_revision to the variant identifier at that revision. Returns None if no such variant exists at that revision.

Generated by the revisioned derive.

pub fn walk_revisioned_variant_table( wire_revision: u16, ) -> &'static [(&'static str, u32)]

Variant name + discriminant pairs at wire_revision. Returns an empty slice if the revision is unknown. Generated by the revisioned derive.

impl Field

pub const REVISION: u16 = 1u16

The revision number of this type, as declared via #[revisioned(revision = N)].

impl Field

pub fn read_only(&self) -> bool

Check if computing this type can be done on a read only transaction.

Trait Implementations

impl Clone for Field

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Field

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

Formats the value using the given formatter.

impl Default for Field

fn default() -> Self

Returns the “default value” for a type.

impl DeserializeRevisioned for Field

fn deserialize_revisioned<R: Read>(reader: &mut R) -> Result<Self, Error>

Deserializes a new instance of the struct from the specified reader.

impl Eq for Field

impl From<Field> for Field

fn from(v: Field) -> Self

Converts to this type from the input type.

impl From<Field> for Field

fn from(v: Field) -> Self

Converts to this type from the input type.

impl Hash for Field

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 PartialEq for Field

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

Equality operator ==.

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

Inequality operator !=.

impl Revisioned for Field

fn revision() -> u16

Returns the current revision of this type.

fn type_id() -> TypeId

where Self: 'static,

Returns the type id of this type.

impl SerializeRevisioned for Field

fn serialize_revisioned<W: Write>(&self, writer: &mut W) -> Result<(), Error>

Serializes the struct using the specified writer.

impl SkipCheckRevisioned for Field

fn skip_check_revisioned<R: Read>(reader: &mut R) -> Result<(), Error>

impl SkipRevisioned for Field

fn skip_revisioned<R: Read>(reader: &mut R) -> Result<(), Error>

fn skip_revisioned_slice(reader: &mut SliceReader<'_>) -> Result<(), Error>

Consume through bytes backed by SliceReader without allocating a buffer for bulk segments.

impl StructuralPartialEq for Field

impl ToSql for Field

fn fmt_sql(&self, f: &mut String, fmt: SqlFormat)

Format the type to a SQL string.

fn to_sql(&self) -> String

Convert the type to a SQL string.

fn to_sql_pretty(&self) -> String

Convert the type to a pretty-printed SQL string with indentation.

impl<V: Visitor> Visit<V> for Field

fn visit(&self, this: &mut V) -> Result<(), V::Error>

impl<V: MutVisitor> VisitMut<V> for Field

fn visit_mut(&mut self, this: &mut V) -> Result<(), V::Error>

impl WalkRevisioned for Field

type Walker<'r, R: BorrowedReader + 'r> = FieldWalker<'r, R>

Walker produced by walk_revisioned.

fn walk_revisioned<'r, R: BorrowedReader>( reader: &'r mut R, ) -> Result<Self::Walker<'r, R>, Error>

Read the type’s revision-level prefix and return a walker positioned at the start of the body.