Struct Functions 

pub struct Functions(pub Option<Arc<FunctionRegistry>>);

A shared, possibly absent registry: what stores hand to QueryOptions and the frontends’ options. Two handles are equal when they share one registry.

Tuple Fields

0: Option<Arc<FunctionRegistry>>

Implementations

impl Functions

pub fn new(registry: FunctionRegistry) -> Self

pub fn registry(&self) -> Option<&FunctionRegistry>

pub fn get(&self, iri: &str) -> Option<&HostFunction>

pub fn by_cypher_name(&self, name: &str) -> Option<&HostFunction>

pub fn is_empty(&self) -> bool

pub fn install(&self, evaluator: QueryEvaluator) -> QueryEvaluator

Adds every function to a spareval evaluator.

Trait Implementations

impl Clone for Functions

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Functions

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

Formats the value using the given formatter.

impl Default for Functions

fn default() -> Self

Returns the “default value” for a type.

impl Eq for Functions

impl PartialEq for Functions

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

Equality operator ==.

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

Inequality operator !=.