Struct MetadataStorage 

pub struct MetadataStorage { /* private fields */ }

Type-aware metadata storage

Uses separate B-trees for each type, enabling:

• Efficient range queries on numeric types
• No NULL storage overhead
• Type-specific indexing

Implementations

impl MetadataStorage

pub fn new() -> Self

Create new metadata storage

pub fn set( &mut self, entity_id: EntityId, key: impl Into<String>, value: MetadataValue, )

Set a metadata value for an entity

pub fn get(&self, entity_id: EntityId, key: &str) -> Option<MetadataValue>

Get a metadata value for an entity

pub fn get_all(&self, entity_id: EntityId) -> Metadata

Get all metadata for an entity

pub fn set_all(&mut self, entity_id: EntityId, metadata: &Metadata)

Set all metadata for an entity

pub fn remove_all(&mut self, entity_id: EntityId)

Remove all metadata for an entity

pub fn filter_int_range( &self, key: &str, min: Option<i64>, max: Option<i64>, ) -> Vec<EntityId>

Find entities matching int range

pub fn filter_string_prefix(&self, key: &str, prefix: &str) -> Vec<EntityId>

Find entities matching string prefix

pub fn filter_eq(&self, key: &str, value: &MetadataValue) -> Vec<EntityId>

Find entities where key equals value

pub fn entity_count(&self) -> usize

Number of entities with metadata

pub fn value_count(&self) -> usize

Total number of key-value pairs

Trait Implementations

impl Debug for MetadataStorage

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

Formats the value using the given formatter.

impl Default for MetadataStorage

fn default() -> Self

Returns the “default value” for a type.