MetadataStore

ipfrs_semantic::metadata

Struct MetadataStore 

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pub struct MetadataStore { /* private fields */ }
Expand description

Metadata store for CID-indexed metadata

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impl MetadataStore

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pub fn new() -> Self

Create a new metadata store

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pub fn insert(&self, cid: Cid, metadata: Metadata) -> Result<()>

Insert or update metadata for a CID

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pub fn get(&self, cid: &Cid) -> Option<Metadata>

Get metadata for a CID

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pub fn remove(&self, cid: &Cid) -> Result<Option<Metadata>>

Remove metadata for a CID

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pub fn contains(&self, cid: &Cid) -> bool

Check if metadata exists for a CID

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pub fn cids(&self) -> Vec<Cid> ⓘ

Get all CIDs with metadata

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pub fn len(&self) -> usize

Get number of stored metadata records

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pub fn is_empty(&self) -> bool

Check if store is empty

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pub fn filter(&self, filter: &MetadataFilter) -> Vec<Cid> ⓘ

Filter CIDs by metadata filter

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pub fn get_by_time_range( &self, start: Option<u64>, end: Option<u64>, ) -> Vec<Cid> ⓘ

Get CIDs created within a time range

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pub fn get_field_values(&self, field: &str) -> Vec<MetadataValue>

Get unique values for a field

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pub fn get_facet_counts(&self, field: &str) -> HashMap<String, usize>

Get facet counts for a string field

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pub fn clear(&self)

Clear all metadata

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impl Default for MetadataStore

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fn default() -> Self

Returns the “default value” for a type. Read more

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