MeetingFolderListener never runs — resolveSchemaSlug() probes every candidate getter with method_exists(), which is false for all of them

[rubenvdlinde]

Verified against origin/development with git show, not a local working tree.

Summary

MeetingFolderListener::resolveSchemaSlug() loops candidate getters through a method_exists() probe with a variable method name:

// lib/Listener/MeetingFolderListener.php:155
if (method_exists($entity, $getter) === false) { continue; }

Every candidate getter on an OCA\OpenRegister\Db\ObjectEntity is served by Entity::__call() and declared as an @method docblock, so the probe is false for every candidate and the loop completes having found nothing.

Measured

Live, against the server's own Entity.php:

subject	method_exists	is_callable
ObjectEntity::getSchema	false	true
ObjectEntity::getObject — concrete control	true	true

Consequence

The row carries no _schemaSlug/_schema/schema key, getSchemaSlug() does not exist, and the probe loop yields nothing — so resolveSchemaSlug() returns '', the !== 'meeting' comparison is always true, and the meeting-folder listener never runs.

Unlike PortalCreateOpenParentGuardListener, which has a Tier-2 detectSchemaBySignature() fallback carrying the guard, there is no second tier here.

SubmissionDeadlineListener.php:194 and BackgroundJob/TranscriptRetentionJob.php:476 use the same variable-name shape and are worth checking in the same pass.

Why this was nearly missed

A literal-name grep for method_exists($x, 'getSchema') cannot see this. The variable-name form is the more dangerous of the two, because a loop over candidate getters that all fail looks exhaustive while checking nothing. Fleet-wide there are 30 such sites across 10 repos.

Credit where it is due

tests/Stubs/Db/ObjectEntity.php is the fleet's reference double — it extends Entity, declares only genuinely concrete methods, and carries a "SIGNATURE PARITY CONTRACT (decidesk#399)" header naming this exact failure mode. Every other repo with a confirmed instance had a double that declared the accessors concretely and inverted the predicate under test.

That contract is why decidesk's count is 1 and pipelinq's is 5. It is not sufficient on its own — this defect survived it, because the parity contract constrains the double, not the probe.

Fix notes

is_callable() is not a membership test on a __call class — measured, it is true for any name and the call then raises BadFunctionCallException. Swapping the probe yields an always-true guard, so the call must be made exception-safe in the same edit.

getObject() is genuinely concrete and always injects the uuid under id, so reading @self.schema from the payload is the more robust route. Note getId() is also magic — do not fall back to it.

Fleet context and the full 18-repo table: fleet-board/findings/method-exists-sweep.md.