Christian Sailer 53b2b86d89
CORDA-1840 Smarter checkpoint writing (#3677)
* Explicitly add/update checkpoints rather than calling `addOrUpdate` which will run a `select` statement and then a add or update statement.

* Use `currentState.isAnyCheckpointPersisted()` to check for previous checkpoints
2018-07-25 18:08:49 +01:00
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