ConditionCheck
¶
Source code in docs_src/capo_dynamodb/types/condition_check.py
condition_expression
instance-attribute
¶
condition_expression: ConditionExpression
A condition that must be satisfied in order for a conditional update to succeed. For more information, see Condition expressions in the Amazon DynamoDB Developer Guide.
expression_attribute_names
instance-attribute
¶
expression_attribute_names: NotRequired[ExpressionAttributeNameMap]
One or more substitution tokens for attribute names in an expression. For more information, see Expression attribute names in the Amazon DynamoDB Developer Guide.
expression_attribute_values
instance-attribute
¶
expression_attribute_values: NotRequired[ExpressionAttributeValueMap]
One or more values that can be substituted in an expression. For more information, see Condition expressions in the Amazon DynamoDB Developer Guide.
key
instance-attribute
¶
key: Key
The primary key of the item to be checked. Each element consists of an attribute name and a value for that attribute.
return_values_on_condition_check_failure
instance-attribute
¶
return_values_on_condition_check_failure: NotRequired[
ReturnValuesOnConditionCheckFailure
]
Use ReturnValuesOnConditionCheckFailure to get the item attributes if the ConditionCheck condition fails. For ReturnValuesOnConditionCheckFailure, the valid values are: NONE and ALL_OLD.