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docs: support concurrent transactions on the emulator #1601

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olavloite merged 1 commit into from
May 4, 2024
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docs: support concurrent transactions on the emulator #1601

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7 changes: 7 additions & 0 deletions src/main/java/com/google/cloud/spanner/jdbc/JdbcDriver.java
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Expand Up @@ -84,6 +84,13 @@
* instance and database in the connection string will automatically be created if these do
* not yet exist on the emulator. This means that you do not need to execute any `gcloud`
* commands on the emulator to create the instance and database before you can connect to it.
* Setting this property to true also enables running concurrent transactions on the emulator.
* The emulator aborts any concurrent transaction on the emulator, and the JDBC driver works
* around this by automatically setting a savepoint after each statement that is executed.
* When the transaction has been aborted by the emulator and the JDBC connection wants to
* continue with that transaction, the transaction is replayed up until the savepoint that had
* automatically been set after the last statement that was executed before the transaction
* was aborted by the emulator.
* <li>endpoint (string): Set this property to specify a custom endpoint that the JDBC driver
* should connect to. You can use this property in combination with the autoConfigEmulator
* property to instruct the JDBC driver to connect to an emulator instance that uses a
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