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QueryAnalysis

oxirs_arq::query_analysis

Struct QueryAnalysis 

Source 
pub struct QueryAnalysis {
    pub variables: HashSet<Variable>,
    pub projected_variables: HashSet<Variable>,
    pub filter_variables: HashSet<Variable>,
    pub join_variables: HashSet<Variable>,
    pub variable_scopes: HashMap<Variable, VariableScope>,
    pub filter_safety: FilterSafetyAnalysis,
    pub type_consistency: TypeConsistencyAnalysis,
    pub index_hints: IndexOptimizationHints,
    pub pattern_cardinalities: HashMap<usize, usize>,
    pub validation_errors: Vec<ValidationError>,
}
Expand description

Query analysis results

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§variables: HashSet<Variable>

All variables discovered in the query

§projected_variables: HashSet<Variable>

Variables that appear in projection

§filter_variables: HashSet<Variable>

Variables that appear in filters

§join_variables: HashSet<Variable>

Variables that join patterns together (simplified for tests)

§variable_scopes: HashMap<Variable, VariableScope>

Variable scoping information

§filter_safety: FilterSafetyAnalysis

Filter safety analysis results

§type_consistency: TypeConsistencyAnalysis

Type consistency analysis

§index_hints: IndexOptimizationHints

Index optimization hints

§pattern_cardinalities: HashMap<usize, usize>

Pattern cardinality estimates

§validation_errors: Vec<ValidationError>

Semantic validation results

Trait Implementations§

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impl Clone for QueryAnalysis

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fn clone(&self) -> QueryAnalysis

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

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

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

Formats the value using the given formatter. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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where T: 'a,

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fn explicit(self, class: Class, tag: u32) -> TaggedParser<'a, Explicit, Self, E>

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impl<'a, T, E> AsTaggedImplicit<'a, E> for T
where T: 'a,

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fn implicit( self, class: Class, constructed: bool, tag: u32, ) -> TaggedParser<'a, Implicit, Self, E>

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impl<T> Borrow<T> for T
where T: ?Sized,

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Immutably borrows from an owned value. Read more
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where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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const ALIGN: usize

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type Init = T

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Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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The inverse inclusion map: attempts to construct self from the equivalent element of its superset. Read more
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Checks if self is actually part of its subset T (and can be converted to it).
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Use with care! Same as self.to_subset but without any property checks. Always succeeds.
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type Error = Infallible

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