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chore: Name what the client throws for a precondition that does not hold, rather than status 409. #33

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Merged
goloroden merged 2 commits into from
Oct 23, 2026
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chore: Name what the client throws for a precondition that does not hold, rather than status 409. #33

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chore: Name the error code for a precondition that does not hold, rat…
goloroden Oct 23, 2026
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chore: Name the exception for a recursive precondition against a serv…
goloroden Oct 23, 2026
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5 changes: 4 additions & 1 deletion eventsourcingdb/src/main/java/io/thenativeweb/eventsourcingdb/Precondition.java
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Expand Up @@ -2,7 +2,10 @@

/**
* A condition that must hold for {@link Client#writeEvents(java.util.List, java.util.List)} to write events. If any of
* the preconditions does not hold, no event is written, and the server answers with status code 409.
* the preconditions does not hold, no event is written, and the client throws a {@link DbApiException} with the code
* {@link ErrorCode#PRECONDITION_VIOLATED}, whichever API the server offers. A recursive precondition needs the v2 API,
* though: against a server without it, the client throws an {@link IncompatibleServerException} instead, and sends no
* write at all (see {@link PreconditionOptions}).
*/
public sealed interface Precondition
permits IsSubjectPristinePrecondition,
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