Struct MaterializedViewManager 

pub struct MaterializedViewManager { /* private fields */ }

Manager for materialized query result views

Thread-safe: all public methods acquire only short-lived locks.

Implementations

impl MaterializedViewManager

pub fn with_config(config: ViewManagerConfig) -> Self

Create a new view manager with explicit configuration

pub fn new(max_views: usize, default_ttl: Duration) -> Self

Create a new view manager with default settings

pub fn store_view( &self, query_hash: &str, pattern: &str, results: Vec<BindingRow>, dependent_predicates: Vec<String>, ) -> Result<()>

Store a new view.

If the cache is full, the least-recently-used view is evicted first. Large result sets (exceeding the memory row threshold) are spilled to disk.

pub fn get_view(&self, query_hash: &str) -> Option<Vec<BindingRow>>

Retrieve a view by query hash. Returns None on cache miss or if expired.

pub fn invalidate_by_predicate(&self, predicate_iri: &str) -> usize

Invalidate all views that depend on a given predicate IRI.

Returns the number of views removed.

pub fn invalidate_pattern(&self, affected_pattern: &str) -> usize

Invalidate views whose query pattern contains the given substring. Useful for invalidating based on graph pattern structure changes.

pub fn evict_expired(&self) -> usize

Remove all views whose TTL has elapsed.

Returns the number of expired views removed.

pub fn invalidate_view(&self, query_hash: &str) -> bool

Explicitly remove a single view by hash

pub fn get_stats(&self) -> ViewManagerStats

Retrieve current statistics snapshot