Enum aws_sdk_textract::types::RelationshipType
source · #[non_exhaustive]pub enum RelationshipType {
Answer,
Child,
ComplexFeatures,
MergedCell,
Table,
TableFooter,
TableTitle,
Title,
Value,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against RelationshipType
, 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 relationshiptype = unimplemented!();
match relationshiptype {
RelationshipType::Answer => { /* ... */ },
RelationshipType::Child => { /* ... */ },
RelationshipType::ComplexFeatures => { /* ... */ },
RelationshipType::MergedCell => { /* ... */ },
RelationshipType::Table => { /* ... */ },
RelationshipType::TableFooter => { /* ... */ },
RelationshipType::TableTitle => { /* ... */ },
RelationshipType::Title => { /* ... */ },
RelationshipType::Value => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when relationshiptype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant RelationshipType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
RelationshipType::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 RelationshipType::NewFeature
is defined.
Specifically, when relationshiptype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on RelationshipType::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
Answer
Child
ComplexFeatures
MergedCell
Table
TableTitle
Title
Value
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 RelationshipType
impl RelationshipType
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 RelationshipType
impl AsRef<str> for RelationshipType
source§impl Clone for RelationshipType
impl Clone for RelationshipType
source§fn clone(&self) -> RelationshipType
fn clone(&self) -> RelationshipType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for RelationshipType
impl Debug for RelationshipType
source§impl Display for RelationshipType
impl Display for RelationshipType
source§impl From<&str> for RelationshipType
impl From<&str> for RelationshipType
source§impl FromStr for RelationshipType
impl FromStr for RelationshipType
source§impl Hash for RelationshipType
impl Hash for RelationshipType
source§impl Ord for RelationshipType
impl Ord for RelationshipType
source§fn cmp(&self, other: &RelationshipType) -> Ordering
fn cmp(&self, other: &RelationshipType) -> 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 RelationshipType
impl PartialEq for RelationshipType
source§fn eq(&self, other: &RelationshipType) -> bool
fn eq(&self, other: &RelationshipType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for RelationshipType
impl PartialOrd for RelationshipType
source§fn partial_cmp(&self, other: &RelationshipType) -> Option<Ordering>
fn partial_cmp(&self, other: &RelationshipType) -> 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 RelationshipType
impl StructuralPartialEq for RelationshipType
Auto Trait Implementations§
impl Freeze for RelationshipType
impl RefUnwindSafe for RelationshipType
impl Send for RelationshipType
impl Sync for RelationshipType
impl Unpin for RelationshipType
impl UnwindSafe for RelationshipType
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