Enum BindErrorKind 

pub enum BindErrorKind {
    UnknownLabel,
    UnknownRelationType,
    UnknownProperty,
    UndeclaredVariable,
    DuplicateVariable,
    AmbiguousProperty,
    UnsupportedClause,
    InvalidDeleteTarget,
    VariableKindConflict,
    VariableAlreadyBound,
    InvalidArgument,
}

The kind of a binder error.

Variants

UnknownLabel

A label name was not found in the ontology (strict mode).

UnknownRelationType

A relation type name was not found in the ontology (strict mode).

UnknownProperty

A property name was not found in the ontology (strict mode).

UndeclaredVariable

A variable was referenced before it was introduced by a MATCH pattern.

DuplicateVariable

The same variable was introduced more than once in a conflicting way.

AmbiguousProperty

A property name is ambiguous across multiple owner labels.

UnsupportedClause

A clause is recognized by the parser but not yet implemented by the binder/executor (SET/REMOVE/CALL). Surfaced as an error instead of a silent no-op (#724).

InvalidDeleteTarget

A DELETE target was not a plain bound variable (e.g. DELETE n.prop or DELETE n + 1). Only DELETE <var> is supported (#740).

VariableKindConflict

A variable is used with two incompatible kinds — e.g. a relationship variable reused as a node pattern (MATCH ()-[r]-() MATCH (r)). openCypher rejects this as a compile-time VariableTypeConflict (#956).

VariableAlreadyBound

An already-bound variable is re-declared by a CREATE/MERGE pattern (MATCH (a) CREATE (a), a reused relationship variable, a bound node given new labels/properties). openCypher VariableAlreadyBound (#956).

InvalidArgument

A clause or function argument is semantically invalid — a non-integer range()/SKIP/LIMIT argument, an aggregate in WHERE, a CREATE relationship with no/var-length/undirected type, a UNION column mismatch, etc. Covers openCypher’s ArgumentError / InvalidAggregation / NoSingleRelationshipType / … — the harness checks the phase, not the sub-code, so one kind with a descriptive message suffices (#956).

Trait Implementations

impl Clone for BindErrorKind

fn clone(&self) -> BindErrorKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BindErrorKind

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

Formats the value using the given formatter.

impl Eq for BindErrorKind

impl PartialEq for BindErrorKind

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BindErrorKind