Enum AttributeValue 

pub enum AttributeValue {
    S(String),
    N(String),
    B(Bytes),
    Ss(Vec<String>),
    Ns(Vec<String>),
    Bs(Vec<Bytes>),
    Bool(bool),
    Null(bool),
    L(Vec<AttributeValue>),
    M(HashMap<String, AttributeValue>),
}

DynamoDB attribute value.

Represented as a tagged union where exactly one variant is present. Numbers are always string-encoded to preserve arbitrary precision.

Variants

S(String)

String value.

N(String)

Number value (string-encoded for arbitrary precision).

B(Bytes)

Binary value (base64-encoded in JSON).

Ss(Vec<String>)

String Set.

Ns(Vec<String>)

Number Set (string-encoded).

Bs(Vec<Bytes>)

Binary Set (base64-encoded in JSON).

Bool(bool)

Boolean value.

Null(bool)

Null value.

L(Vec<AttributeValue>)

List of attribute values.

M(HashMap<String, AttributeValue>)

Map of attribute values.

Implementations

impl AttributeValue

pub fn is_s(&self) -> bool

Returns true if this is a string value.

pub fn is_n(&self) -> bool

Returns true if this is a number value.

pub fn is_b(&self) -> bool

Returns true if this is a binary value.

pub fn is_bool(&self) -> bool

Returns true if this is a boolean value.

pub fn is_null(&self) -> bool

Returns true if this is a null value.

pub fn is_l(&self) -> bool

Returns true if this is a list value.

pub fn is_m(&self) -> bool

Returns true if this is a map value.

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

Returns the string value if this is an S variant.

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

Returns the number string if this is an N variant.

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

Returns the map if this is an M variant.

pub fn as_l(&self) -> Option<&[AttributeValue]>

Returns the list if this is an L variant.

pub fn as_bool(&self) -> Option<bool>

Returns the boolean if this is a Bool variant.

pub fn type_descriptor(&self) -> &'static str

Returns the DynamoDB type descriptor string (e.g., “S”, “N”, “BOOL”).

Trait Implementations

impl Clone for AttributeValue

fn clone(&self) -> AttributeValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AttributeValue

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AttributeValue

fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl Display for AttributeValue

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

Formats the value using the given formatter.

impl Hash for AttributeValue

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for AttributeValue

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Serialize for AttributeValue

fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl Eq for AttributeValue

impl StructuralPartialEq for AttributeValue