Struct aws_sdk_dynamodb::types::Update
source · #[non_exhaustive]pub struct Update {
pub key: Option<HashMap<String, AttributeValue>>,
pub update_expression: Option<String>,
pub table_name: Option<String>,
pub condition_expression: Option<String>,
pub expression_attribute_names: Option<HashMap<String, String>>,
pub expression_attribute_values: Option<HashMap<String, AttributeValue>>,
pub return_values_on_condition_check_failure: Option<ReturnValuesOnConditionCheckFailure>,
}
Expand description
Represents a request to perform an UpdateItem
operation.
Fields (Non-exhaustive)§
This struct is marked as non-exhaustive
Struct { .. }
syntax; cannot be matched against without a wildcard ..
; and struct update syntax will not work.key: Option<HashMap<String, AttributeValue>>
The primary key of the item to be updated. Each element consists of an attribute name and a value for that attribute.
update_expression: Option<String>
An expression that defines one or more attributes to be updated, the action to be performed on them, and new value(s) for them.
table_name: Option<String>
Name of the table for the UpdateItem
request.
condition_expression: Option<String>
A condition that must be satisfied in order for a conditional update to succeed.
expression_attribute_names: Option<HashMap<String, String>>
One or more substitution tokens for attribute names in an expression.
expression_attribute_values: Option<HashMap<String, AttributeValue>>
One or more values that can be substituted in an expression.
return_values_on_condition_check_failure: Option<ReturnValuesOnConditionCheckFailure>
Use ReturnValuesOnConditionCheckFailure
to get the item attributes if the Update
condition fails. For ReturnValuesOnConditionCheckFailure
, the valid values are: NONE and ALL_OLD.
Implementations§
source§impl Update
impl Update
sourcepub fn key(&self) -> Option<&HashMap<String, AttributeValue>>
pub fn key(&self) -> Option<&HashMap<String, AttributeValue>>
The primary key of the item to be updated. Each element consists of an attribute name and a value for that attribute.
sourcepub fn update_expression(&self) -> Option<&str>
pub fn update_expression(&self) -> Option<&str>
An expression that defines one or more attributes to be updated, the action to be performed on them, and new value(s) for them.
sourcepub fn table_name(&self) -> Option<&str>
pub fn table_name(&self) -> Option<&str>
Name of the table for the UpdateItem
request.
sourcepub fn condition_expression(&self) -> Option<&str>
pub fn condition_expression(&self) -> Option<&str>
A condition that must be satisfied in order for a conditional update to succeed.
sourcepub fn expression_attribute_names(&self) -> Option<&HashMap<String, String>>
pub fn expression_attribute_names(&self) -> Option<&HashMap<String, String>>
One or more substitution tokens for attribute names in an expression.
sourcepub fn expression_attribute_values(
&self
) -> Option<&HashMap<String, AttributeValue>>
pub fn expression_attribute_values( &self ) -> Option<&HashMap<String, AttributeValue>>
One or more values that can be substituted in an expression.
sourcepub fn return_values_on_condition_check_failure(
&self
) -> Option<&ReturnValuesOnConditionCheckFailure>
pub fn return_values_on_condition_check_failure( &self ) -> Option<&ReturnValuesOnConditionCheckFailure>
Use ReturnValuesOnConditionCheckFailure
to get the item attributes if the Update
condition fails. For ReturnValuesOnConditionCheckFailure
, the valid values are: NONE and ALL_OLD.