Struct ConditionCheck 

pub struct ConditionCheck {
    pub table_name: String,
    pub key: HashMap<String, AttributeValue>,
    pub condition_expression: 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<String>,
}

A condition check within a transaction (no mutation).

Fields

table_name: String

The table containing the item.

key: HashMap<String, AttributeValue>

The primary key of the item to check.

condition_expression: String

The condition expression that must evaluate to true.

expression_attribute_names: Option<HashMap<String, String>>

Substitution tokens for attribute names.

expression_attribute_values: Option<HashMap<String, AttributeValue>>

Substitution tokens for attribute values.

return_values_on_condition_check_failure: Option<String>

Determines whether to return item attributes on condition check failure.

Trait Implementations

impl Clone for ConditionCheck

fn clone(&self) -> ConditionCheck

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConditionCheck

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ConditionCheck

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ConditionCheck

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

where __S: Serializer,

Serialize this value into the given Serde serializer.