Struct DefaultPillarSelector 

pub struct DefaultPillarSelector<S, V, E>
where
    S: PlanningSolution,
    V: Clone + Eq + Hash + Send + Sync + 'static,
    E: Fn(&dyn ScoreDirector<S>, usize, usize) -> Option<V> + Send + Sync,
{ /* private fields */ }

A pillar selector that groups entities by their variable value.

This selector uses an entity selector to get entities, then groups them by the value of a specified variable using a value extractor function.

Zero-Erasure Design

The extractor function E is stored as a concrete generic type parameter, eliminating virtual dispatch overhead when grouping entities by value.

Implementations

impl<S, V, E> DefaultPillarSelector<S, V, E>

where S: PlanningSolution, V: Clone + Eq + Hash + Send + Sync + 'static, E: Fn(&dyn ScoreDirector<S>, usize, usize) -> Option<V> + Send + Sync,

pub fn new( entity_selector: Box<dyn EntitySelector<S>>, descriptor_index: usize, variable_name: &'static str, value_extractor: E, ) -> Self

Creates a new default pillar selector.

Arguments

• entity_selector - The entity selector to get entities from
• descriptor_index - The entity descriptor index
• variable_name - The variable name for grouping
• value_extractor - Function to extract the grouping value from an entity

pub fn with_sub_pillar_config(self, config: SubPillarConfig) -> Self

Sets the sub-pillar configuration.

pub fn variable_name(&self) -> &str

Returns the variable name.

Trait Implementations

impl<S, V, E> Debug for DefaultPillarSelector<S, V, E>

where S: PlanningSolution, V: Clone + Eq + Hash + Send + Sync + 'static, E: Fn(&dyn ScoreDirector<S>, usize, usize) -> Option<V> + Send + Sync,

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

Formats the value using the given formatter.

impl<S, V, E> PillarSelector<S> for DefaultPillarSelector<S, V, E>

where S: PlanningSolution, V: Clone + Eq + Hash + Send + Sync + 'static, E: Fn(&dyn ScoreDirector<S>, usize, usize) -> Option<V> + Send + Sync,

fn iter<'a>( &'a self, score_director: &'a dyn ScoreDirector<S>, ) -> Box<dyn Iterator<Item = Pillar> + 'a>

Returns an iterator over pillars.

fn size(&self, score_director: &dyn ScoreDirector<S>) -> usize

Returns the approximate number of pillars.

fn descriptor_index(&self) -> usize

Returns the descriptor index this selector operates on.

fn is_never_ending(&self) -> bool

Returns true if this selector may return the same pillar multiple times.