Struct ExpectedAttributeValue 

pub struct ExpectedAttributeValue {
    pub value: Option<AttributeValue>,
    pub exists: Option<bool>,
    pub comparison_operator: Option<ComparisonOperator>,
    pub attribute_value_list: Vec<AttributeValue>,
}

Expected attribute value for the legacy Expected parameter (conditional writes).

Fields

value: Option<AttributeValue>

The value to compare against (legacy simple form).

exists: Option<bool>

Whether the attribute must exist (true) or not exist (false).

comparison_operator: Option<ComparisonOperator>

The comparison operator (extended form).

attribute_value_list: Vec<AttributeValue>

The attribute values to compare against (extended form).

Trait Implementations

impl Clone for ExpectedAttributeValue

fn clone(&self) -> ExpectedAttributeValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExpectedAttributeValue

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

Formats the value using the given formatter.

impl Default for ExpectedAttributeValue

fn default() -> ExpectedAttributeValue

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ExpectedAttributeValue

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ExpectedAttributeValue

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.