Function validate_netrelation_references 

pub fn validate_netrelation_references(
    netelements: &[Netelement],
    netrelations: &[NetRelation],
) -> Vec<String>

Validate that all netrelations reference existing netelements

Checks that from_netelement_id and to_netelement_id in each netrelation correspond to actual netelements in the network. Returns a list of invalid netrelation IDs that reference non-existent netelements.

This function is used to detect data quality issues where netrelations reference netelements that don’t exist (FR-006a).

Parameters

• netelements: All track segments in the network
• netrelations: Navigability connections to validate

Returns

A vector of netrelation IDs that have invalid references. Empty if all are valid.

Examples

use tp_lib_core::path::validate_netrelation_references;
use tp_lib_core::models::{Netelement, NetRelation};

let netelements = vec![/* ... */];
let netrelations = vec![/* ... */];

let invalid = validate_netrelation_references(&netelements, &netrelations);

if !invalid.is_empty() {
    eprintln!("Warning: {} netrelations reference non-existent netelements", invalid.len());
}