Enum ValueFormat 

pub enum ValueFormat {
    Plain,
    Typed,
}

How records carry attribute values: plain JSON (the default) or DynamoDB’s typed attribute JSON ({"pk": {"S": "a"}, "tags": {"SS": [..]}}). typed keeps sets, binaries and numbers of any precision exactly, so a DynamoDB-to-DynamoDB copy round-trips every attribute type.

Variants

Plain

Plain JSON: sets become arrays, binaries base64 strings, numbers JSON numbers unless that would lose precision (then decimal strings).

Typed

DynamoDB attribute JSON, one {"<type>": value} object per attribute.

Implementations

impl ValueFormat

pub fn item_to_json( self, item: &HashMap<String, AttributeValue>, ) -> Result<Value, FaucetError>

Convert an item read from DynamoDB in this format.

pub fn streams_item_to_json( self, item: &HashMap<String, AttributeValue>, ) -> Result<Value, FaucetError>

Convert a DynamoDB Streams image in this format.

Trait Implementations

impl Clone for ValueFormat

fn clone(&self) -> ValueFormat

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ValueFormat

impl Debug for ValueFormat

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

Formats the value using the given formatter.

impl Default for ValueFormat

fn default() -> ValueFormat

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ValueFormat

fn deserialize<__D>( __deserializer: __D, ) -> Result<ValueFormat, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ValueFormat

impl JsonSchema for ValueFormat

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for ValueFormat

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ValueFormat

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ValueFormat