Struct SparqlDiagnostic 

pub struct SparqlDiagnostic {
    pub query: String,
    pub bindings: Vec<(String, Term)>,
    pub results: Vec<Vec<(String, Term)>>,
    pub fallback_reason: Option<String>,
}

Debugging detail for one SPARQL-backed constraint evaluation (sh:sparql or a custom SPARQL-based constraint component), meant to be attached to a violating report result so a failure is never a dead end: it shows exactly what query ran, what it was bound to, and what rows it actually returned.

Fields

query: String

The query actually executed, after every static SHACL substitution ($PATH, $currentShape, $shapesGraph, custom-component parameters). $this is left as a free variable in this text; its per-focus binding is the first entry of bindings.

bindings: Vec<(String, Term)>

Every SHACL prebinding applied before execution, in application order: $this, then $currentShape/$shapesGraph when present, then any custom-component parameters (SHACL §6.2.3).

results: Vec<Vec<(String, Term)>>

The solution rows the query actually produced (one entry per row, each a variable-name-to-term list in projection order). For ASK queries this is always empty — the answer is captured by whether any ValidationResult/Reason exists at all, not by a bound row.

fallback_reason: Option<String>

Why native lowering did not apply, when known: the first unsupported construct lower_query hit. None when the query ran natively, or when it’s a custom constraint component (always opaque today — see [SparqlExecutor::eval_ask]/[SparqlExecutor::eval_select]).

Trait Implementations

impl Clone for SparqlDiagnostic

fn clone(&self) -> SparqlDiagnostic

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SparqlDiagnostic

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SparqlDiagnostic

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for SparqlDiagnostic

impl Hash for SparqlDiagnostic

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for SparqlDiagnostic

fn eq(&self, other: &SparqlDiagnostic) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for SparqlDiagnostic

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for SparqlDiagnostic