Struct Db 

pub struct Db { /* private fields */ }

Read-only attribute database.

Describes the service structure, attribute permissions, and stores read-only values.

Implementations

impl Db

pub fn build() -> Builder<Self>

Creates a new database builder.

pub const fn hash(&self) -> u128

Returns the database hash ([Vol 3] Part G, Section 7.3).

pub fn iter(&self) -> impl Iterator<Item = (Handle, Uuid, &[u8])>

Returns an iterator over all attributes in handle order.

pub fn get(&self, hdl: Handle) -> Option<(Uuid, &[u8])>

Returns the type and value of the specified handle or None if the handle is invalid. The value will be empty if it’s not part of the database.

pub fn primary_services( &self, start: Handle, uuid: Option<Uuid>, ) -> impl Iterator<Item = DbEntry<'_, ServiceDef>>

Returns an iterator over primary services with optional UUID matching ([Vol 3] Part G, Section 4.4).

pub fn includes( &self, hdls: HandleRange, ) -> impl Iterator<Item = DbEntry<'_, IncludeDef>>

Returns an iterator over service includes ([Vol 3] Part G, Section 4.5.1).

pub fn characteristics( &self, hdls: HandleRange, ) -> impl Iterator<Item = DbEntry<'_, CharacteristicDef>>

Returns an iterator over service characteristics ([Vol 3] Part G, Section 4.6.1).

pub fn descriptors( &self, hdls: HandleRange, ) -> impl Iterator<Item = DbEntry<'_, DescriptorDef>>

Returns an iterator over characteristic descriptors ([Vol 3] Part G, Section 4.7.1).

pub fn try_access(&self, req: Request, hdl: Handle) -> RspResult<Handle>

Performs read/write access permission check for a single handle.

pub fn try_multi_access<T: AsRef<[Handle]>>( &self, req: Request, hdls: T, ) -> RspResult<T>

Performs read/write access permission check for multiple handles.

pub fn try_range_access( &self, req: Request, hdls: HandleRange, uuid: Uuid, ) -> RspResult<Vec<Handle>>

Performs read/write access permission check for a range of handles with UUID type matching.

pub fn dump(&self)

Logs database contents at debug level.

Panics

Panics if the database structure is invalid.

Trait Implementations

impl Clone for Db

fn clone(&self) -> Db

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Db

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

Formats the value using the given formatter.

impl Default for Db

fn default() -> Db

Returns the “default value” for a type.