edifact_mapper/
evaluator_factory.rs

1//! Factory for creating condition evaluators by variant name and format version.
2
3use automapper_validation::{
4    ConditionEvaluator, ConditionExprEvaluator, ConditionResult, EvaluationContext,
5};
6use mig_bo4e::pid_requirements::PidRequirements;
7use mig_bo4e::pid_validation::PidValidationError;
8use serde_json::Value;
9
10/// Run condition-aware validation using a boxed evaluator.
11///
12/// Internally dispatches to a concrete generic call to satisfy `Sized` bounds.
13pub fn validate_with_boxed_evaluator(
14    evaluator: &dyn ConditionEvaluator,
15    json: &Value,
16    requirements: &PidRequirements,
17    pid: &str,
18    segments: &[mig_types::segment::OwnedSegment],
19) -> Vec<PidValidationError> {
20    // We need a Sized type to pass to ConditionExprEvaluator.
21    // Use a newtype wrapper around &dyn ConditionEvaluator.
22    struct EvalRef<'a>(&'a dyn ConditionEvaluator);
23
24    impl ConditionEvaluator for EvalRef<'_> {
25        fn evaluate(&self, condition: u32, ctx: &EvaluationContext) -> ConditionResult {
26            self.0.evaluate(condition, ctx)
27        }
28
29        fn is_external(&self, condition: u32) -> bool {
30            self.0.is_external(condition)
31        }
32
33        fn is_known(&self, condition: u32) -> bool {
34            self.0.is_known(condition)
35        }
36
37        fn message_type(&self) -> &str {
38            self.0.message_type()
39        }
40
41        fn format_version(&self) -> &str {
42            self.0.format_version()
43        }
44    }
45
46    let wrapper = EvalRef(evaluator);
47    let external = automapper_validation::MapExternalProvider::new(Default::default());
48    let ctx = EvaluationContext::new(pid, &external, segments);
49    let expr_eval = ConditionExprEvaluator::new(&wrapper);
50    crate::conditional_validation::validate_with_conditions(json, requirements, &expr_eval, &ctx)
51}
52
53/// Create a condition evaluator for the given variant and format version.
54///
55/// Returns `None` if no evaluator exists for the combination. See
56/// [`automapper_validation::evaluator_for`].
57pub fn create_evaluator(variant: &str, fv: &str) -> Option<Box<dyn ConditionEvaluator>> {
58    automapper_validation::evaluator_for(variant, fv)
59}
60
61#[cfg(test)]
62mod tests {
63    use super::*;
64
65    #[test]
66    fn test_known_evaluators_exist() {
67        assert!(create_evaluator("UTILMD_Strom", "FV2504").is_some());
68        assert!(create_evaluator("MSCONS", "FV2504").is_some());
69        assert!(create_evaluator("ORDERS", "FV2510").is_some());
70        assert!(create_evaluator("UTILMD_Gas", "FV2604").is_some());
71    }
72
73    #[test]
74    fn test_unknown_evaluator_returns_none() {
75        assert!(create_evaluator("NONEXISTENT", "FV2504").is_none());
76        assert!(create_evaluator("UTILMD_Strom", "FV9999").is_none());
77    }
78}
edifact_mapper/evaluator_factory.rs

edifact_mapper/
evaluator_factory.rs
