Siunertaq Project Solves Cross-Language Naming with a Shared Canonical Namespace

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Developers building Siunertaq, a Scala 3 project, faced a challenge in consistently identifying the same code entity across Scala and Perl when both languages push data into a shared ClickHouse database. Because JVM naming conventions like camelCase differ from Perl's snake_case, a direct bidirectional mapping between the two proved unreliable and collision-prone. The team instead built a utility called NamespaceCanon that independently maps both a JVM class-method pair and a Perl package-sub pair down to a single lowercase dot-separated string, such as 'expr.program.to_json'. This canonical name is computed once during JSON serialization on the Scala side and injected as a field before the data reaches ClickHouse, requiring no changes to existing data structures. The approach deliberately abandons reversibility in favor of a stable, queryable join key that neither side needs to reconstruct from the other.

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