Struct mmids_core::workflows::metadata::MetadataKeyMap

pub struct MetadataKeyMap { /* private fields */ }

Creates distinct metadata keys for each unique combination of metadata name and value type. If the same name and type pair are registered on the same MetadataKeyMap instance, then those keys returned are guaranteed to be equal to each other.

Keys created between different instances of MetadataKeyMap are not guaranteed (nor likely) to be consistent. Therefore, keys should only be compared with keys created by the same map instance, and in most cases you probably only want one instance for the whole process.

Implementations

impl MetadataKeyMap

pub fn new() -> Self

Creates a new MetadataKeyMap instance

pub fn register(
    &mut self,
    name: &'static str,
    value_type: MetadataValueType
) -> MetadataKey

Registers the supplied metadata name and value type pair with the key map. If this pair has not been registered yet then a new MetadataKey will be generated and returned. If the same pair has already been registered, then the pre-generated key will be returned

Trait Implementations

impl Default for MetadataKeyMap

fn default() -> MetadataKeyMap

Returns the “default value” for a type.