Struct mz_adapter::session::vars::SessionVar
source · struct SessionVar<V>where
V: Value + Debug + ?Sized + 'static,{
default_value: &'static V,
local_value: Option<V::Owned>,
staged_value: Option<V::Owned>,
session_value: Option<V::Owned>,
parent: &'static ServerVar<V>,
}
Expand description
A SessionVar
is the session value for a configuration parameter. If unset,
the server default is used instead.
Fields§
§default_value: &'static V
§local_value: Option<V::Owned>
§staged_value: Option<V::Owned>
§session_value: Option<V::Owned>
§parent: &'static ServerVar<V>
Implementations§
source§impl<V> SessionVar<V>where
V: Value + Debug + ?Sized + 'static,
impl<V> SessionVar<V>where
V: Value + Debug + ?Sized + 'static,
fn new(parent: &'static ServerVar<V>) -> SessionVar<V>
fn set(&mut self, input: VarInput<'_>, local: bool) -> Result<(), AdapterError>
fn reset(&mut self, local: bool)
fn end_transaction(&mut self, action: EndTransactionAction)
fn value(&self) -> &V
Trait Implementations§
source§impl<V> Debug for SessionVar<V>where
V: Value + Debug + ?Sized + 'static + Debug,
V::Owned: Debug,
impl<V> Debug for SessionVar<V>where
V: Value + Debug + ?Sized + 'static + Debug,
V::Owned: Debug,
source§impl<V> Var for SessionVar<V>where
V: Value + ToOwned + Debug + ?Sized + 'static,
V::Owned: Debug,
impl<V> Var for SessionVar<V>where
V: Value + ToOwned + Debug + ?Sized + 'static,
V::Owned: Debug,
source§fn value(&self) -> String
fn value(&self) -> String
Constructs a flattened string representation of the current value of the
configuration parameter. Read more
source§fn description(&self) -> &'static str
fn description(&self) -> &'static str
Returns a short sentence describing the purpose of the configuration
parameter.
Auto Trait Implementations§
impl<V: ?Sized> RefUnwindSafe for SessionVar<V>where
V: RefUnwindSafe,
<V as ToOwned>::Owned: RefUnwindSafe,
impl<V: ?Sized> Send for SessionVar<V>where
<V as ToOwned>::Owned: Send,
impl<V: ?Sized> Sync for SessionVar<V>where
<V as ToOwned>::Owned: Sync,
impl<V: ?Sized> Unpin for SessionVar<V>where
<V as ToOwned>::Owned: Unpin,
impl<V: ?Sized> UnwindSafe for SessionVar<V>where
V: RefUnwindSafe,
<V as ToOwned>::Owned: UnwindSafe,
Blanket Implementations§
source§impl<T> FutureExt for T
impl<T> FutureExt for T
source§fn with_context(self, otel_cx: Context) -> WithContext<Self>
fn with_context(self, otel_cx: Context) -> WithContext<Self>
source§fn with_current_context(self) -> WithContext<Self>
fn with_current_context(self) -> WithContext<Self>
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoRequest<T> for T
impl<T> IntoRequest<T> for T
source§fn into_request(self) -> Request<T>
fn into_request(self) -> Request<T>
Wrap the input message
T
in a tonic::Request
source§impl<T> Pointable for T
impl<T> Pointable for T
source§impl<P, R> ProtoType<R> for Pwhere
R: RustType<P>,
impl<P, R> ProtoType<R> for Pwhere
R: RustType<P>,
source§fn into_rust(self) -> Result<R, TryFromProtoError>
fn into_rust(self) -> Result<R, TryFromProtoError>
See
RustType::from_proto
.source§fn from_rust(rust: &R) -> P
fn from_rust(rust: &R) -> P
See
RustType::into_proto
.