Enum StatementKind 

pub enum StatementKind {
    Read,
    Write,
    Admin,
    Transaction,
}

Classification of a parsed statement for permission checking.

Determined after parsing but before execution. The session checks the caller’s Identity against the statement kind and rejects operations that exceed the caller’s role.

Variants

Read

Read-only: MATCH, RETURN, WITH, UNWIND, CALL (read-only procedures).

Write

Data mutation: CREATE, SET, DELETE, REMOVE, MERGE.

Admin

Schema/admin: CREATE TYPE, DROP TYPE, CREATE INDEX, DROP INDEX, CREATE CONSTRAINT, DROP CONSTRAINT.

Transaction

Transaction control: START TRANSACTION, COMMIT, ROLLBACK, SAVEPOINT. Always allowed regardless of role.

Implementations

impl StatementKind

pub fn required_role(self) -> Option<Role>

Returns the minimum Role required for this statement kind.

Returns None for StatementKind::Transaction (always allowed).

Trait Implementations

impl Clone for StatementKind

fn clone(&self) -> StatementKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StatementKind

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

Formats the value using the given formatter.

impl Display for StatementKind

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

Formats the value using the given formatter.

impl PartialEq for StatementKind

fn eq(&self, other: &StatementKind) -> 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 Copy for StatementKind

impl Eq for StatementKind

impl StructuralPartialEq for StatementKind