[−][src]Struct rusoto_dynamodb::KeySchemaElement
Represents a single element of a key schema. A key schema specifies the attributes that make up the primary key of a table, or the key attributes of an index.
A KeySchemaElement
represents exactly one attribute of the primary key. For example, a simple primary key would be represented by one KeySchemaElement
(for the partition key). A composite primary key would require one KeySchemaElement
for the partition key, and another KeySchemaElement
for the sort key.
A KeySchemaElement
must be a scalar, top-level attribute (not a nested attribute). The data type must be one of String, Number, or Binary. The attribute cannot be nested within a List or a Map.
Fields
attribute_name: String
The name of a key attribute.
key_type: String
The role that this key attribute will assume:
-
HASH
- partition key -
RANGE
- sort key
The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
Trait Implementations
impl Clone for KeySchemaElement
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impl Clone for KeySchemaElement
fn clone(&self) -> KeySchemaElement
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fn clone(&self) -> KeySchemaElement
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
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fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl Default for KeySchemaElement
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impl Default for KeySchemaElement
fn default() -> KeySchemaElement
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fn default() -> KeySchemaElement
Returns the "default value" for a type. Read more
impl PartialEq<KeySchemaElement> for KeySchemaElement
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impl PartialEq<KeySchemaElement> for KeySchemaElement
fn eq(&self, other: &KeySchemaElement) -> bool
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fn eq(&self, other: &KeySchemaElement) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &KeySchemaElement) -> bool
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fn ne(&self, other: &KeySchemaElement) -> bool
This method tests for !=
.
impl Debug for KeySchemaElement
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impl Debug for KeySchemaElement
fn fmt(&self, f: &mut Formatter) -> Result
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fn fmt(&self, f: &mut Formatter) -> Result
Formats the value using the given formatter. Read more
impl Serialize for KeySchemaElement
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impl Serialize for KeySchemaElement
fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
__S: Serializer,
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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
__S: Serializer,
Serialize this value into the given Serde serializer. Read more
impl<'de> Deserialize<'de> for KeySchemaElement
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impl<'de> Deserialize<'de> for KeySchemaElement
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
__D: Deserializer<'de>,
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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
__D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
Auto Trait Implementations
impl Send for KeySchemaElement
impl Send for KeySchemaElement
impl Sync for KeySchemaElement
impl Sync for KeySchemaElement
Blanket Implementations
impl<T> From for T
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impl<T> From for T
impl<T, U> Into for T where
U: From<T>,
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impl<T, U> Into for T where
U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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impl<T> ToOwned for T where
T: Clone,
type Owned = T
fn to_owned(&self) -> T
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fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
fn clone_into(&self, target: &mut T)
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fn clone_into(&self, target: &mut T)
🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
impl<T, U> TryFrom for T where
T: From<U>,
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impl<T, U> TryFrom for T where
T: From<U>,
type Error = !
try_from
)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
try_from
)Performs the conversion.
impl<T> Borrow for T where
T: ?Sized,
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impl<T> Borrow for T where
T: ?Sized,
impl<T> BorrowMut for T where
T: ?Sized,
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impl<T> BorrowMut for T where
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T, U> TryInto for T where
U: TryFrom<T>,
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impl<T, U> TryInto for T where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
try_from
)The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
try_from
)Performs the conversion.
impl<T> Any for T where
T: 'static + ?Sized,
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impl<T> Any for T where
T: 'static + ?Sized,
fn get_type_id(&self) -> TypeId
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fn get_type_id(&self) -> TypeId
🔬 This is a nightly-only experimental API. (get_type_id
)
this method will likely be replaced by an associated static
Gets the TypeId
of self
. Read more
impl<T> DeserializeOwned for T where
T: Deserialize<'de>,
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impl<T> DeserializeOwned for T where
T: Deserialize<'de>,
impl<T> Same for T
impl<T> Same for T
type Output = T
Should always be Self
impl<T> Erased for T
impl<T> Erased for T