Struct ExpressionContext 

pub struct ExpressionContext {
    pub values: HashMap<String, Value>,
    pub names: HashMap<String, String>,
}

Expression context with attribute values and names

Fields

values: HashMap<String, Value>

Expression attribute values (:value1 -> Value)

names: HashMap<String, String>

Expression attribute names (#name -> actual_name)

Implementations

impl ExpressionContext

pub fn new() -> Self

pub fn with_value(self, placeholder: impl Into<String>, value: Value) -> Self

pub fn with_name( self, placeholder: impl Into<String>, name: impl Into<String>, ) -> Self

Trait Implementations

impl Clone for ExpressionContext

fn clone(&self) -> ExpressionContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExpressionContext

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

Formats the value using the given formatter.

impl Default for ExpressionContext

fn default() -> ExpressionContext

Returns the “default value” for a type.