Struct MaterializedView 

pub struct MaterializedView {
    pub query_hash: String,
    pub query_pattern: String,
    pub result_size: usize,
    pub created_at: Instant,
    pub last_accessed: Instant,
    pub ttl: Duration,
    pub access_count: u64,
    pub data: ViewData,
    pub dependent_predicates: Vec<String>,
}

A single materialized view entry

Fields

query_hash: String

Hash of the query pattern that produced this view

query_pattern: String

Textual representation of the source query pattern

result_size: usize

Number of result rows

created_at: Instant

When the view was first created

last_accessed: Instant

When the view was last accessed (for LRU eviction)

ttl: Duration

Time-to-live for this view

access_count: u64

How many times this view has been accessed (hit count)

data: ViewData

The actual data

dependent_predicates: Vec<String>

Set of predicate IRIs that this view depends on (for targeted invalidation)

Implementations

impl MaterializedView

pub fn is_expired(&self) -> bool

Returns true if the view’s TTL has elapsed

pub fn in_memory_rows(&self) -> Option<&[BindingRow]>

Returns the in-memory rows if available

Trait Implementations

impl Debug for MaterializedView

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

Formats the value using the given formatter.