Struct Roles 

pub struct Roles(/* private fields */);

Implementations

impl Roles

pub fn new() -> Self

pub fn from_strs(roles: &[&str]) -> Self

pub fn insert(&mut self, role: Role) -> bool

pub fn remove<Q>(&mut self, role: &Q) -> bool

where Role: Borrow<Q>, Q: Hash + Eq + ?Sized,

pub fn contains<Q>(&self, role: &Q) -> bool

where Role: Borrow<Q>, Q: Hash + Eq + ?Sized,

Trait Implementations

impl Clone for Roles

fn clone(&self) -> Roles

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Roles

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

Formats the value using the given formatter.

impl<'q> Decode<'q, MySql> for Roles

fn decode(value: <MySql as Database>::ValueRef<'q>) -> Result<Self, BoxDynError>

Decode a new value of this type using a raw value from the database.

impl<'q> Decode<'q, Postgres> for Roles

fn decode( value: <Postgres as Database>::ValueRef<'q>, ) -> Result<Self, BoxDynError>

Decode a new value of this type using a raw value from the database.

impl<'q> Decode<'q, Sqlite> for Roles

fn decode( value: <Sqlite as Database>::ValueRef<'q>, ) -> Result<Self, BoxDynError>

Decode a new value of this type using a raw value from the database.

impl Default for Roles

fn default() -> Roles

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Roles

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<'q> Encode<'q, MySql> for Roles

fn encode_by_ref( &self, buf: &mut <MySql as Database>::ArgumentBuffer<'q>, ) -> Result<IsNull, BoxDynError>

Writes the value of self into buf without moving self.

fn encode( self, buf: &mut <DB as Database>::ArgumentBuffer<'q>, ) -> Result<IsNull, Box<dyn Error + Sync + Send>>

where Self: Sized,

Writes the value of self into buf in the expected format for the database.

fn produces(&self) -> Option<<DB as Database>::TypeInfo>

fn size_hint(&self) -> usize

impl<'q> Encode<'q, Postgres> for Roles

fn encode_by_ref( &self, buf: &mut <Postgres as Database>::ArgumentBuffer<'q>, ) -> Result<IsNull, BoxDynError>

Writes the value of self into buf without moving self.

fn encode( self, buf: &mut <DB as Database>::ArgumentBuffer<'q>, ) -> Result<IsNull, Box<dyn Error + Sync + Send>>

where Self: Sized,

Writes the value of self into buf in the expected format for the database.

fn produces(&self) -> Option<<DB as Database>::TypeInfo>

fn size_hint(&self) -> usize

impl<'q> Encode<'q, Sqlite> for Roles

fn encode_by_ref( &self, buf: &mut <Sqlite as Database>::ArgumentBuffer<'q>, ) -> Result<IsNull, BoxDynError>

Writes the value of self into buf without moving self.

fn encode( self, buf: &mut <DB as Database>::ArgumentBuffer<'q>, ) -> Result<IsNull, Box<dyn Error + Sync + Send>>

where Self: Sized,

Writes the value of self into buf in the expected format for the database.

fn produces(&self) -> Option<<DB as Database>::TypeInfo>

fn size_hint(&self) -> usize

impl<'a> FromSql<'a> for Roles

fn from_sql( ty: &Type, raw: &'a [u8], ) -> Result<Self, Box<dyn Error + Sync + Send>>

Creates a new value of this type from a buffer of data of the specified Postgres Type in its binary format.

fn accepts(ty: &Type) -> bool

Determines if a value of this type can be created from the specified Postgres Type.

fn from_sql_null(ty: &Type) -> Result<Self, Box<dyn Error + Sync + Send>>

Creates a new value of this type from a NULL SQL value.

fn from_sql_nullable( ty: &Type, raw: Option<&'a [u8]>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A convenience function that delegates to from_sql and from_sql_null depending on the value of raw.

impl FromSql for Roles

fn column_result(value: ValueRef<'_>) -> FromSqlResult<Self>

Converts SQLite value into Rust value.

impl PartialEq for Roles

fn eq(&self, other: &Roles) -> 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 Roles

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl ToSql for Roles

fn to_sql(&self) -> Result<ToSqlOutput<'_>>

Converts Rust value to SQLite value

impl ToSql for Roles

fn to_sql( &self, ty: &Type, out: &mut BytesMut, ) -> Result<IsNull, Box<dyn Error + Sync + Send>>

where Self: Sized,

Converts the value of self into the binary format of the specified Postgres Type, appending it to out.

fn accepts(ty: &Type) -> bool

where Self: Sized,

Determines if a value of this type can be converted to the specified Postgres Type.

fn to_sql_checked( &self, ty: &Type, out: &mut BytesMut, ) -> Result<IsNull, Box<dyn Error + Sync + Send>>

An adaptor method used internally by Rust-Postgres.

fn encode_format(&self, _ty: &Type) -> Format

Specify the encode format

impl Type<MySql> for Roles

fn type_info() -> <MySql as Database>::TypeInfo

Returns the canonical SQL type for this Rust type.

fn compatible(ty: &<DB as Database>::TypeInfo) -> bool

Determines if this Rust type is compatible with the given SQL type.

impl Type<Postgres> for Roles

fn type_info() -> <Postgres as Database>::TypeInfo

Returns the canonical SQL type for this Rust type.

fn compatible(ty: &<DB as Database>::TypeInfo) -> bool

Determines if this Rust type is compatible with the given SQL type.

impl Type<Sqlite> for Roles

fn type_info() -> <Sqlite as Database>::TypeInfo

Returns the canonical SQL type for this Rust type.

fn compatible(ty: &<DB as Database>::TypeInfo) -> bool

Determines if this Rust type is compatible with the given SQL type.

impl Eq for Roles

impl StructuralPartialEq for Roles