Struct CompositeExternalProvider 

pub struct CompositeExternalProvider { /* private fields */ }

An ExternalConditionProvider that delegates to multiple providers in order.

For each evaluate() call, providers are consulted in sequence. The first provider that returns a non-Unknown result wins. If all providers return Unknown (or there are no providers), Unknown is returned.

This is useful for layering: e.g., a caller-supplied map on top of a system-default provider.

Implementations

impl CompositeExternalProvider

pub fn new(providers: Vec<Box<dyn ExternalConditionProvider>>) -> Self

Creates a new CompositeExternalProvider from the given provider list.

Providers are consulted in the order they appear in the vector.

pub fn with_defaults( sector: Option<Sector>, roles: Option<(Vec<MarketRole>, Vec<MarketRole>)>, code_list_json: Option<&str>, ) -> Self

Build a composite provider with the standard static providers.

• sector: If Some, adds a SectorProvider
• roles: If Some((sender_roles, recipient_roles)), adds a MarketRoleProvider
• code_list_json: If Some, adds a CodeListProvider loaded from JSON
• konfigurationen_json: If Some((json, product_code)), adds a KonfigurationenProvider

pub fn builder() -> CompositeProviderBuilder

Start building a composite provider with fine-grained control.

Trait Implementations

impl ExternalConditionProvider for CompositeExternalProvider

fn evaluate(&self, condition_name: &str) -> ConditionResult

Evaluate an external condition by name.

fn now(&self) -> DateTime<Utc>

The present moment, for conditions that compare against it: UTILMD [494] “das hier genannte Datum muss der Zeitpunkt sein, zu dem das Dokument erstellt wurde, oder ein Zeitpunkt, der davor liegt”. The wall clock by default; a caller on a simulated clock overrides it.