Struct trustfall_core::ir::EdgeParameters

pub struct EdgeParameters { /* private fields */ }

Parameter values for an edge expansion.

Passed as an argument to the Adapter::resolve_starting_vertices and Adapter::resolve_neighbors functions. In those cases, the caller guarantees that all edge parameters marked as required in the schema are included in the EdgeParameters value.

Implementations

impl EdgeParameters

pub fn get(&self, name: &str) -> Option<&FieldValue>

Gets the value of the edge parameter by this name.

Returns None if the edge parameter was not present. Returns the default value if the query did not set a value but the edge parameter defined a default value.

pub fn iter(&self) -> impl Iterator<Item = (&Arc<str>, &FieldValue)> + '_

Iterates through all the edge parameters and their values.

pub fn is_empty(&self) -> bool

Returns true if the edge has any parameters, and false otherwise.

Trait Implementations

impl Clone for EdgeParameters

fn clone(&self) -> EdgeParameters

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for EdgeParameters

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

Formats the value using the given formatter.

impl Default for EdgeParameters

fn default() -> EdgeParameters

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for EdgeParameters

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<'a> Index<&'a str> for EdgeParameters

Enable indexing into EdgeParameters values: parameters["param_name"]

type Output = FieldValue

The returned type after indexing.

fn index(&self, index: &'a str) -> &Self::Output

Performs the indexing (container[index]) operation.

impl PartialEq for EdgeParameters

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Serialize for EdgeParameters

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<'a> TryIntoStruct for &'a EdgeParameters

type Error = Error

fn try_into_struct<S: DeserializeOwned>(self) -> Result<S, Error>

impl Eq for EdgeParameters

impl StructuralEq for EdgeParameters

impl StructuralPartialEq for EdgeParameters