Enum UserParamError 

pub enum UserParamError {
    Arity {
        expected: usize,
        got: usize,
    },
    Gap {
        missing: usize,
        max: usize,
    },
    UnsupportedShape,
    TypeMismatch {
        slot: &'static str,
        got: &'static str,
    },
}

Errors surfaced when binding fails. The wire layer turns these into QUERY_ERROR / INVALID_PARAMS responses.

Variants

Arity

Caller supplied fewer or more values than the SQL references. expected is the highest $N index in the SQL (so a SQL using $1 and $3 reports expected = 3).

Fields

expected: usize

got: usize

Gap

SQL uses $1 and $3 but not $2 — placeholder indices must be a contiguous run starting from 1.

Fields

missing: usize

max: usize

UnsupportedShape

The runtime accepts only QueryExpr variants supported by the shape binder (Table / Join / Graph / Path / Vector / Hybrid). Other shapes (DDL, KV ops, etc.) cannot carry placeholders in the tracer-bullet scope.

TypeMismatch

A parameter was supplied in a slot that requires a specific type (e.g. a vector slot received a string). slot describes the context, got describes the user-supplied value’s variant.

Fields

slot: &'static str

got: &'static str

Trait Implementations

impl Clone for UserParamError

fn clone(&self) -> UserParamError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UserParamError

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

Formats the value using the given formatter.

impl Display for UserParamError

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

Formats the value using the given formatter.

impl Error for UserParamError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for UserParamError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for UserParamError

impl StructuralPartialEq for UserParamError