pub struct KeySchemaElement {
pub attribute_name: String,
pub key_type: String,
}
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.
The name of a key attribute.
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.
Performs copy-assignment from source
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This method tests for self
and other
values to be equal, and is used by ==
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This method tests for !=
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Serialize this value into the given Serde serializer. Read more
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Creates owned data from borrowed data, usually by cloning. Read more
🔬 This is a nightly-only experimental API. (toowned_clone_into
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recently added
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🔬 This is a nightly-only experimental API. (try_from
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The type returned in the event of a conversion error.
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Immutably borrows from an owned value. Read more
🔬 This is a nightly-only experimental API. (get_type_id
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this method will likely be replaced by an associated static
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🔬 This is a nightly-only experimental API. (try_from
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The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)