class Aws::DynamoDB::Types::Update

Represents a request to perform an `UpdateItem` operation.

@note When making an API call, you may pass Update

data as a hash:

    {
      key: { # required
        "AttributeName" => "value", # value <Hash,Array,String,Numeric,Boolean,IO,Set,nil>
      },
      update_expression: "UpdateExpression", # required
      table_name: "TableName", # required
      condition_expression: "ConditionExpression",
      expression_attribute_names: {
        "ExpressionAttributeNameVariable" => "AttributeName",
      },
      expression_attribute_values: {
        "ExpressionAttributeValueVariable" => "value", # value <Hash,Array,String,Numeric,Boolean,IO,Set,nil>
      },
      return_values_on_condition_check_failure: "ALL_OLD", # accepts ALL_OLD, NONE
    }

@!attribute [rw] key

The primary key of the item to be updated. Each element consists of
an attribute name and a value for that attribute.
@return [Hash<String,Types::AttributeValue>]

@!attribute [rw] update_expression

An expression that defines one or more attributes to be updated, the
action to be performed on them, and new value(s) for them.
@return [String]

@!attribute [rw] table_name

Name of the table for the `UpdateItem` request.
@return [String]

@!attribute [rw] condition_expression

A condition that must be satisfied in order for a conditional update
to succeed.
@return [String]

@!attribute [rw] expression_attribute_names

One or more substitution tokens for attribute names in an
expression.
@return [Hash<String,String>]

@!attribute [rw] expression_attribute_values

One or more values that can be substituted in an expression.
@return [Hash<String,Types::AttributeValue>]

@!attribute [rw] return_values_on_condition_check_failure

Use `ReturnValuesOnConditionCheckFailure` to get the item attributes
if the `Update` condition fails. For
`ReturnValuesOnConditionCheckFailure`, the valid values are: NONE,
ALL\_OLD, UPDATED\_OLD, ALL\_NEW, UPDATED\_NEW.
@return [String]

@see docs.aws.amazon.com/goto/WebAPI/dynamodb-2012-08-10/Update AWS API Documentation

Constants

SENSITIVE