Struct aws_sdk_dynamodb::model::ConditionCheck [−][src]
#[non_exhaustive]pub struct ConditionCheck {
pub key: Option<HashMap<String, AttributeValue>>,
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 a check that an item exists or to check the condition of specific attributes of the item.
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 checked. Each element consists of an attribute name and a value for that attribute.
table_name: Option<String>
Name of the table for the check item 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
ConditionCheck
condition fails. For
ReturnValuesOnConditionCheckFailure
, the valid values are: NONE and
ALL_OLD.
Implementations
The primary key of the item to be checked. Each element consists of an attribute name and a value for that attribute.
Name of the table for the check item request.
A condition that must be satisfied in order for a conditional update to succeed.
One or more substitution tokens for attribute names in an expression.
One or more values that can be substituted in an expression.
pub 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
ConditionCheck
condition fails. For
ReturnValuesOnConditionCheckFailure
, the valid values are: NONE and
ALL_OLD.
Creates a new builder-style object to manufacture ConditionCheck
Trait Implementations
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
Auto Trait Implementations
impl RefUnwindSafe for ConditionCheck
impl Send for ConditionCheck
impl Sync for ConditionCheck
impl Unpin for ConditionCheck
impl UnwindSafe for ConditionCheck
Blanket Implementations
Mutably borrows from an owned value. Read more
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more