Method RemoveVectorsAsync

Namespace

MailFathom.Application.Emails.Embeddings.Generations

Assembly

MailFathom.Application.dll

RemoveVectorsAsync(IPersistenceSession, EmbeddingProfileId, int, CancellationToken)

Removes a bounded batch of one superseded generation's vectors.

Task<int> RemoveVectorsAsync(IPersistenceSession session, EmbeddingProfileId profileId, int batchSize, CancellationToken cancellationToken)

Parameters

session IPersistenceSession

The session whose transaction this write joins.

profileId EmbeddingProfileId

The generation whose vectors are no longer read.

batchSize int

The greatest number of vectors to remove in this batch.

cancellationToken CancellationToken

Propagates caller cancellation.

Returns

Task<int>

How many vectors this batch removed, which is zero exactly when the generation holds none.

Remarks

Bounded rather than one statement, because a generation of a large mailbox is millions of rows and a single delete would hold one transaction, one lock set, and one write-ahead burst for as long as it took. They are removed rather than kept for a rollback window: they are personal data derived from mail whose purpose ended at the switch, which is the trade ADR 0006 makes deliberately and states the cost of.

Exceptions

ArgumentOutOfRangeException

Thrown when batchSize is not positive.