rvesse commented on issue #2195: URL: https://github.com/apache/jena/issues/2195#issuecomment-1891786883
`GraphTxn` is intended to provide auto-commit style semantics for `Graph`'s. However there was a bug in the `GraphTxn` implementation in the 4.10.0 release (#2086) where it incorrectly determined the current transaction state and wasn't always creating a transaction when necessary (and conversely would try to incorrectly create a transaction when unnecessary) So the behaviour you are seeing with 5.0.0-SNAPSHOT is the correct expected behaviour Creating the iterator starts a read transaction that isn't committed until you explicitly `close()` the iterator. Trying to do a `g.add()` tries to start a write transaction but it can't because the read transaction is still in progress. If you plan to use `GraphTxn` seriously then you should explicitly manage the transactions to get the transaction boundaries appropriate to your application. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
