Enum aws_sdk_glue::types::TriggerState
source · #[non_exhaustive]pub enum TriggerState {
Activated,
Activating,
Created,
Creating,
Deactivated,
Deactivating,
Deleting,
Updating,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against TriggerState
, it is important to ensure
your code is forward-compatible. That is, if a match arm handles a case for a
feature that is supported by the service but has not been represented as an enum
variant in a current version of SDK, your code should continue to work when you
upgrade SDK to a future version in which the enum does include a variant for that
feature.
Here is an example of how you can make a match expression forward-compatible:
# let triggerstate = unimplemented!();
match triggerstate {
TriggerState::Activated => { /* ... */ },
TriggerState::Activating => { /* ... */ },
TriggerState::Created => { /* ... */ },
TriggerState::Creating => { /* ... */ },
TriggerState::Deactivated => { /* ... */ },
TriggerState::Deactivating => { /* ... */ },
TriggerState::Deleting => { /* ... */ },
TriggerState::Updating => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when triggerstate
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant TriggerState::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
TriggerState::Unknown(UnknownVariantValue("NewFeature".to_owned()))
and calling as_str
on it yields "NewFeature"
.
This match expression is forward-compatible when executed with a newer
version of SDK where the variant TriggerState::NewFeature
is defined.
Specifically, when triggerstate
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on TriggerState::NewFeature
also yielding "NewFeature"
.
Explicitly matching on the Unknown
variant should
be avoided for two reasons:
- The inner data
UnknownVariantValue
is opaque, and no further information can be extracted. - It might inadvertently shadow other intended match arms.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Activated
Activating
Created
Creating
Deactivated
Deactivating
Deleting
Updating
Unknown(UnknownVariantValue)
Unknown
. See the docs on this enum for the correct way to handle unknown variants.Unknown
contains new variants that have been added since this code was generated.
Implementations§
source§impl TriggerState
impl TriggerState
source§impl TriggerState
impl TriggerState
sourcepub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
pub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
Parses the enum value while disallowing unknown variants.
Unknown variants will result in an error.
Trait Implementations§
source§impl AsRef<str> for TriggerState
impl AsRef<str> for TriggerState
source§impl Clone for TriggerState
impl Clone for TriggerState
source§fn clone(&self) -> TriggerState
fn clone(&self) -> TriggerState
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for TriggerState
impl Debug for TriggerState
source§impl Display for TriggerState
impl Display for TriggerState
source§impl From<&str> for TriggerState
impl From<&str> for TriggerState
source§impl FromStr for TriggerState
impl FromStr for TriggerState
source§impl Hash for TriggerState
impl Hash for TriggerState
source§impl Ord for TriggerState
impl Ord for TriggerState
source§fn cmp(&self, other: &TriggerState) -> Ordering
fn cmp(&self, other: &TriggerState) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq for TriggerState
impl PartialEq for TriggerState
source§fn eq(&self, other: &TriggerState) -> bool
fn eq(&self, other: &TriggerState) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for TriggerState
impl PartialOrd for TriggerState
source§fn partial_cmp(&self, other: &TriggerState) -> Option<Ordering>
fn partial_cmp(&self, other: &TriggerState) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moreimpl Eq for TriggerState
impl StructuralPartialEq for TriggerState
Auto Trait Implementations§
impl Freeze for TriggerState
impl RefUnwindSafe for TriggerState
impl Send for TriggerState
impl Sync for TriggerState
impl Unpin for TriggerState
impl UnwindSafe for TriggerState
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.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> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more