Struct DefaultProblemChangeDirector 

pub struct DefaultProblemChangeDirector { /* private fields */ }

Default implementation of ProblemChangeDirector for local use.

This implementation tracks changes and maintains an index of working objects for lookup operations.

Implementations

impl DefaultProblemChangeDirector

pub fn new(solution: &Value, id_field: &str) -> Self

Create a new director with the given working solution.

Arguments

• solution - The working solution JSON
• id_field - The field name used for object IDs (typically “id”)

pub fn changes(&self) -> &[ChangeRecord]

Get the changes recorded by this director.

pub fn has_changes(&self) -> bool

Check if any changes were made.

pub fn update_index(&mut self, id: String, value: Value)

Update the object index with a new or modified object.

pub fn remove_from_index(&mut self, id: &str)

Remove an object from the index.

Trait Implementations

impl Debug for DefaultProblemChangeDirector

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

Formats the value using the given formatter.

impl ProblemChangeDirector for DefaultProblemChangeDirector

fn add_entity( &mut self, entity_id: &str, entity: Value, consumer: ChangeConsumer, )

Add a new planning entity to the solution.

fn remove_entity(&mut self, entity_id: &str, consumer: ChangeConsumer)

Remove a planning entity from the solution.

fn change_variable( &mut self, entity_id: &str, variable_name: &str, consumer: ChangeConsumer, )

Change a planning variable on an entity.

fn add_problem_fact( &mut self, fact_id: &str, fact: Value, consumer: ChangeConsumer, )

Add a new problem fact to the solution.

fn remove_problem_fact(&mut self, fact_id: &str, consumer: ChangeConsumer)

Remove a problem fact from the solution.

fn change_problem_property(&mut self, object_id: &str, consumer: ChangeConsumer)

Change a property on an entity or problem fact.

fn look_up_working_object_or_fail( &self, external_id: &str, ) -> Result<Value, ProblemChangeError>

Look up a working object by its external ID.

fn look_up_working_object(&self, external_id: &str) -> Option<Value>

Look up a working object by its external ID.

fn update_shadow_variables(&mut self)

Trigger variable listeners for changes made so far.