Struct ProblemFactDescriptor 

pub struct ProblemFactDescriptor {
    pub type_name: &'static str,
    pub type_id: TypeId,
    pub solution_field: &'static str,
    pub is_collection: bool,
    pub id_field: Option<&'static str>,
    pub extractor: Option<Box<dyn EntityExtractor>>,
}

Describes a problem fact type at runtime.

Fields

type_name: &'static str

Name of the problem fact type.

type_id: TypeId

TypeId of the problem fact type.

solution_field: &'static str

Field name in the solution.

is_collection: bool

Whether this is a collection of facts.

id_field: Option<&'static str>

The ID field name, if any (for value range provider lookups).

extractor: Option<Box<dyn EntityExtractor>>

Extractor for getting facts from a solution.

Implementations

impl ProblemFactDescriptor

pub fn new( type_name: &'static str, type_id: TypeId, solution_field: &'static str, ) -> Self

Creates a new ProblemFactDescriptor.

pub fn with_extractor(self, extractor: Box<dyn EntityExtractor>) -> Self

Sets the entity extractor for this descriptor.

pub fn single(self) -> Self

Sets whether this is a single fact (not a collection).

pub fn with_id_field(self, field: &'static str) -> Self

Sets the ID field.

Trait Implementations

impl Clone for ProblemFactDescriptor

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 ProblemFactDescriptor

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

Formats the value using the given formatter.