Skip to content

backlog.md

Latest commit

 

History

History
91 lines (58 loc) · 2.44 KB

backlog.md

File metadata and controls

91 lines (58 loc) · 2.44 KB

RL2 Backlog

Updated: 2025-12-16

Open Design Decisions

Namespace URI

Current: https://rl2.example/ontology#
Options: https://w3id.org/rl2/ (persistent) or institutional
Status: Deferred until publication

Recurrent Duties

Problem: No native periodic recurrence (FREQ=QUARTERLY)
Options: RecurrentDuty subclass, profile extension, external scheduler
Status: Open — may be profile-level

ODRL owl:imports

Add owl:imports <http://www.w3.org/ns/odrl/2/> before publication
Status: Deferred until namespace decision

First-class Temporal Arithmetic in Core Evaluator

Problem: Current "Offload to Resolution" pattern requires profile-defined operands for relative time (e.g., daysSinceEvent).
Options: Support xsd:duration arithmetic natively in the core evaluator (e.g., currentDateTime - eventTime < P30D).
Status: Deferred. Current workaround is sufficient; native support would increase kernel complexity.

Use Cases

51 use cases, 17 complete. See usecases/README.md for details.

Work Items

Phase 1: Core Evaluator

  • Dafny core modules
  • Prove S1 (Determinism), S4 (Duty-state consistency), S6 (Totality)
  • Go extraction
  • CLI: rl2-eval --policy p.ttl --request r.json
  • Property-based tests
  • Validate against use cases 1–17

Phase 2: Extended Features

  • Promise lifecycle
  • Violation → remedial duty chains
  • Validate against use cases 18–37

Future

  • ODRL → RL2 transpiler
  • Protocol/Case lifecycle
  • Profiles: external-data-license, ids-dataspace, privacy

Toolchain

Primary: Dafny → Go extraction

Rationale: C-family syntax, Z3 backend, compiles to Go/Java/C#/Python, cloud-native ecosystem, accessible talent pool

Normative artifact: Extracted Go evaluator is the reference implementation

Success Criteria

  • S1, S4, S6 discharged in Dafny
  • Go reference evaluator tested
  • Test suite covers use cases 1–17
  • Vocabulary 100% demonstrated
  • One production implementation tested against reference

Resolved

Date Decision
2025-12-08 Protocol: Universal rl2p:Requirement for Duties, Promises, Claims
2025-12-07 Temporal: Removed TemporalConstraint/EffectiveInterval; use AtomicConstraint
2025-01-06 Spec fixes: RuntimeReference, identity-binding SHACL, path grammar