Struct aws_sdk_dynamodb::model::Update

#[non_exhaustive]
pub struct Update { /* private fields */ }

Represents a request to perform an UpdateItem operation.

Implementations

impl Update

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.

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.

pub fn table_name(&self) -> Option<&str>

Name of the table for the UpdateItem request.

pub fn condition_expression(&self) -> Option<&str>

A condition that must be satisfied in order for a conditional update to succeed.

pub fn expression_attribute_names(&self) -> Option<&HashMap<String, String>>

One or more substitution tokens for attribute names in an expression.

pub fn expression_attribute_values(
    &self
) -> Option<&HashMap<String, AttributeValue>>

One or more values that can be substituted in an expression.

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, ALL_OLD, UPDATED_OLD, ALL_NEW, UPDATED_NEW.

impl Update

pub fn builder() -> Builder

Creates a new builder-style object to manufacture Update.

Trait Implementations

impl Clone for Update

fn clone(&self) -> Update

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Update

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq<Update> for Update

fn eq(&self, other: &Update) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Update