Struct SubscriptionBuilder 

pub struct SubscriptionBuilder { /* private fields */ }

Builder for a SubscriptionDescriptor.

Every method returns Self by value so chains compose without intermediate state. The default request matches “give me everything on this feed”.

Implementations

impl SubscriptionBuilder

pub fn new(feed: impl Into<String>) -> Self

pub fn columns<I, S>(self, cols: I) -> Self

where I: IntoIterator<Item = S>, S: Into<String>,

Restrict to a named subset of columns. Pass an empty iterator to clear a previously-set projection.

pub fn filter(self, f: FilterExpr) -> Self

pub fn sampling(self, s: Sampling) -> Self

pub fn transport_pref(self, p: TransportPreference) -> Self

Replace the entire transport preference list.

pub fn prefer_transport(self, t: TransportTag) -> Self

Append a single transport tag to the preference list. Builds an ordered fallback chain when called multiple times.

pub fn format(self, f: FormatPreference) -> Self

pub fn build(self) -> SubscriptionDescriptor

Trait Implementations

impl Clone for SubscriptionBuilder

fn clone(&self) -> SubscriptionBuilder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SubscriptionBuilder

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

Formats the value using the given formatter.

impl From<SubscriptionBuilder> for SubscriptionDescriptor

fn from(b: SubscriptionBuilder) -> Self

Converts to this type from the input type.