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register-referentie/workflows/diploma-eligibility.dmn
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feat(workflow): diploma-eligibility DMN routes foreign diplomas via CBGV-advies (S-13, closes #14) (#101)
## What & why

S-13: a diploma's origin decides its route. A **DMN** (`diploma-eligibility`) is evaluated inline by
the registratie process as a **`businessRuleTask`**; an exclusive gateway routes a **foreign**
(Buitenlands) diploma through a new **CBGVAdvies** user task before `Beoordelen`, a **domestic** one
straight there (PRD flow 4). The domain's only new job is carrying the diploma origin and passing it
as a process start variable.

Chose **Option B (DMN in the BPMN)** over the issue's literal "evaluated by the Domain Service via
Workflow Client" wording — keeps the decision a first-class workflow artefact and §8.2 clean.
Rationale in **ADR-0016** (proposal #100); noted on this issue.

Closes #14

## Definition of Done

- [x] Linked Gitea issue (above).
- [x] Failing test committed before the implementation.
- [x] Implementation makes the test pass.
- [x] Conventional Commits referencing the issue (`refs #14`).
- [ ] CI green — all Gitea Actions jobs.
- [x] `docker compose up` from a fresh clone reaches green health checks within 3 minutes (additive; DMN deployed by flowable-init).
- [x] Docs updated (ADR-0016, demo note).
- [x] ADR added (`docs/architecture/adr-0016-diploma-eligibility-dmn.md`).
- [x] Demo note in `docs/demo-script.md`.

## How it was built (TDD)

- **Domain**: `DiplomaOrigin` on the aggregate + submit command; threaded through the process-start port so the Workflow Client emits a `diplomaOrigin` start variable. Red → green.
- **DMN + BPMN**: `workflows/diploma-eligibility.dmn` (origin → route); `businessRuleTask` + exclusive gateway + `CBGVAdvies` user task in `registratie.bpmn`; DMN deployed to Flowable's DMN engine by `flowable-init`.
- **Both paths**: `Een diploma op herkomst routeren` acceptance scenarios (origin carried into the process) + unit tests; verify-domain drives a foreign registration through CBGVAdvies→Beoordelen and the domestic one straight to Beoordelen — exercising both DMN branches live.

## Notes for reviewers

- Deviation from the issue's Option-A wording is deliberate and recorded (ADR-0016); the outcome is unchanged.
- The self-service eIDAS→foreign wiring is out of scope here (this slice is area:domain + area:workflow); the domain submit accepts an optional `diplomaOrigin` so the foreign path is drivable.
- Local green: domain unit 109, acceptance 15, `dotnet format`, Release build (0 errors), **domain mutation 95.39%** (break 90). The DMN/`businessRuleTask` REST wiring is CI-verified on verify-stack (no local full-stack run here).

Reviewed-on: #101
2026-07-20 07:26:52 +00:00

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XML

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="https://www.omg.org/spec/DMN/20191111/MODEL/"
xmlns:flowable="http://flowable.org/dmn"
id="diplomaEligibilityDefinitions"
name="Diploma eligibility"
namespace="http://respellion.nl/big/dmn">
<!-- Diploma-eligibility decision (S-13, ADR-0016). Evaluated inline by the registratie process as a
BPMN DMN service task: given the diploma's origin, it sets the `route` the process should take.
A foreign (Buitenlands) diploma routes through the extra CBGV-advies assessment step; a domestic
one (or anything else) goes DIRECT to beoordeling. FIRST hit policy: the foreign rule wins, and
the empty-input catch-all is the default.
NB: the comment lives INSIDE <definitions> on purpose — Flowable's DMN XML converter chokes on a
comment between the XML declaration and the root element ("XMLStreamReader not in START_DOCUMENT
or START_ELEMENT state"), unlike its BPMN converter. -->
<decision id="diploma-eligibility" name="Diploma eligibility">
<decisionTable id="dt-diploma-eligibility" hitPolicy="FIRST">
<input id="in-origin" label="Diploma origin">
<inputExpression id="ie-origin" typeRef="string">
<text>diplomaOrigin</text>
</inputExpression>
</input>
<output id="out-route" label="Route" name="route" typeRef="string"/>
<rule id="rule-foreign">
<inputEntry id="rule-foreign-in">
<text>"Buitenlands"</text>
</inputEntry>
<outputEntry id="rule-foreign-out">
<text>"CBGV_ADVIES"</text>
</outputEntry>
</rule>
<rule id="rule-default">
<inputEntry id="rule-default-in">
<text></text>
</inputEntry>
<outputEntry id="rule-default-out">
<text>"DIRECT"</text>
</outputEntry>
</rule>
</decisionTable>
</decision>
</definitions>