Struct QueryMetadata 

pub struct QueryMetadata {
    pub complexity: usize,
    pub estimated_memory: usize,
    pub triple_pattern_count: usize,
    pub join_count: usize,
    pub filter_count: usize,
    pub has_aggregation: bool,
    pub has_optional: bool,
    pub has_union: bool,
    pub optimization_opportunities: Vec<String>,
}

Query compilation metadata

Fields

complexity: usize

Query complexity score (0-1000)

estimated_memory: usize

Estimated memory usage (bytes)

triple_pattern_count: usize

Number of triple patterns

join_count: usize

Number of joins

filter_count: usize

Number of filters

has_aggregation: bool

Has aggregation

has_optional: bool

Has optional patterns

has_union: bool

Has union patterns

optimization_opportunities: Vec<String>

Optimization opportunities

Trait Implementations

impl Clone for QueryMetadata

fn clone(&self) -> QueryMetadata

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for QueryMetadata

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

Formats the value using the given formatter.

impl Default for QueryMetadata

fn default() -> QueryMetadata

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for QueryMetadata

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for QueryMetadata

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.