Struct InMemorySchema 

pub struct InMemorySchema { /* private fields */ }

A concrete, in-memory SchemaProvider.

Fields are pub(crate) — construction goes through InMemorySchema::builder or the TOML loader in crate::file. This keeps the invariants in one place (unique label / rel type names, deterministic iteration).

Implementations

impl InMemorySchema

pub fn builder() -> InMemorySchemaBuilder

Start a new builder. Use InMemorySchemaBuilder::build to finalise.

pub fn label_names(&self) -> Vec<SmolStr>

All label names, in sorted order.

pub fn rel_type_names(&self) -> Vec<SmolStr>

All relationship type names, in sorted order.

pub fn rel_types(&self) -> impl Iterator<Item = &RelDecl>

All declared rel types, in sorted order.

pub fn parameters(&self) -> impl Iterator<Item = &ParamDecl>

All declared parameters, in sorted order.

pub fn schema_name(&self) -> Option<&str>

Optional human-readable schema name from the [meta] block.

pub fn description(&self) -> Option<&str>

Optional human-readable description from the [meta] block.

pub fn label_count(&self) -> usize

Count of labels.

pub fn rel_type_count(&self) -> usize

Count of rel types.

pub fn parameter_count(&self) -> usize

Count of parameters.

Trait Implementations

impl Clone for InMemorySchema

fn clone(&self) -> InMemorySchema

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InMemorySchema

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

Formats the value using the given formatter.

impl Default for InMemorySchema

fn default() -> InMemorySchema

Returns the “default value” for a type.

impl SchemaProvider for InMemorySchema

fn labels(&self) -> Vec<SmolStr>

All declared labels. Order is not semantic; callers sort if they need deterministic output.

fn relationship_types(&self) -> Vec<SmolStr>

All declared relationship types.

fn node_properties(&self, label: &str) -> Option<Vec<PropertyDecl>>

Properties declared on a node with this label.

fn relationship_properties(&self, rel_type: &str) -> Option<Vec<PropertyDecl>>

Properties declared on a relationship of this type.

fn relationship_endpoints(&self, rel_type: &str) -> Vec<EndpointDecl>

Declared endpoint pairs for a relationship type. Empty = endpoint- polymorphic; the semantic pass then skips endpoint checks.

fn inverse_of(&self, _rel_type: &str) -> Option<SmolStr>

Declared inverse relationship type, if any. Consumers that model typed inverses return them here; others return None.

fn function(&self, _name: &str) -> Option<FunctionSignature>

Look up a function signature. Used by typecheck and by completion.

fn procedure(&self, _name: &str) -> Option<ProcedureSignature>

Look up a procedure signature for CALL <proc>.

fn schema_digest(&self) -> [u8; 32]

A content-addressed digest of the schema’s observable surface. MUST change whenever any declaration visible through this trait changes.

fn has_label(&self, name: &str) -> bool

Convenience predicate: does the schema declare name as a label?

fn has_relationship_type(&self, name: &str) -> bool

Convenience predicate: does the schema declare name as a relationship type?