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QueryPlan

oxirs_core::query::plan_cache

Struct QueryPlan 

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pub struct QueryPlan {
    pub query_hash: u64,
    pub original_query: String,
    pub optimized_patterns: Vec<String>,
    pub estimated_cost: f64,
    pub created_at_ms: i64,
}
Expand description

A compiled SPARQL query plan ready for execution.

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§query_hash: u64

FNV / DefaultHasher hash of the original query string.

§original_query: String

The raw SPARQL query string.

§optimized_patterns: Vec<String>

Human-readable descriptions of the optimized pattern steps.

§estimated_cost: f64

Estimated execution cost (lower is better).

§created_at_ms: i64

Unix timestamp (ms) when this plan was created.

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impl QueryPlan

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pub fn new( query_hash: u64, original_query: impl Into<String>, optimized_patterns: Vec<String>, estimated_cost: f64, ) -> Self

Construct a new plan. created_at_ms is set to the current time.

Trait Implementations§

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impl Clone for QueryPlan

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fn clone(&self) -> QueryPlan

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for QueryPlan

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

Formats the value using the given formatter. Read more

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