Struct EnumCodec 

pub struct EnumCodec { /* private fields */ }

Strict enum names mapped to an integer database field. Empty and unknown names/codes are errors; results use the same names accepted by input.

Implementations

impl EnumCodec

pub fn new( name: &'static str, field: &'static str, variants: impl IntoIterator<Item = (&'static str, i32)>, ) -> Result<EnumCodec, ConfigError>

Trait Implementations

impl Clone for EnumCodec

fn clone(&self) -> EnumCodec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Codec for EnumCodec

fn name(&self) -> &'static str

Stable name used in schema and policy fingerprints.

fn supports(&self, field: &FieldMeta) -> bool

Whether this codec handles the field.

fn parse(&self, _field: &FieldMeta, input: &str) -> Result<ScalarValue, String>

Convert one external value into the field’s validated query value.

fn format_result( &self, _field: &FieldMeta, value: RowValue, ) -> Result<RowValue, String>

Convert one decoded result value into its public representation.

fn fingerprint(&self) -> u64

Stable identity including codec configuration.

fn format_input( &self, field: &FieldMeta, value: &ScalarValue, ) -> Result<String, String>

Canonical RPC representation. Encoders verify that parsing this text recovers the original database value; lossy codecs must override it.

impl Debug for EnumCodec

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

Formats the value using the given formatter.