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Update optimisticLocking.adoc #1065

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Update optimisticLocking.adoc #1065

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8 changes: 8 additions & 0 deletions src/main/docs/guide/sql/jdbc/jdbcRepositories/optimisticLocking.adoc
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Expand Up @@ -7,6 +7,14 @@ To enable optimistic locking for your entity add ann:data.annotation.Version[] a
- `java.lang.Short`
- Date-time type extending `java.time.Temporal`

If you´re using Kotlin, be sure to use the Nullable types:

- `Int?`
- `Long?`
- `Short?`

(Otherwise they will be translated to their primitive types on the JVM and an exception containing `Unsupported @Version type: ...` will be thrown)

The field is going to be incremented (for number types) or replaced (for date types) on an update operation.

Micronaut Data will generate `UPDATE`/`DELETE` SQL queries with a version match: `... WHERE rec.version = :currentVersion ...` and if the update/delete doesn't produce any result api:data.exceptions.OptimisticLockException[] will be thrown.
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