如何使用jOOQ获取事务内部的基础连接？

Question

I'm using jOOQ inside an existing project which also uses some custom JDBC code. Inside a jOOQ transaction I need to call some other JDBC code and I need to pass through the active connection so everything gets inside the same transaction.

I don't know how to retrieve the underlying connection inside a jOOQ transaction.

create.transaction(configuration -> {
    DSLContext ctx = DSL.using(configuration);

    // standard jOOQ code
    ctx.insertInto(...);

    // now I need a Connection
    Connection c = ctx.activeConnection(); // not real, this is what I need
    someOtherCode(c, ...);
});

Reading the docs and peeking a bit on the source code my best bet is this:

configuration.connectionProvider().acquire()

But the name is a bit misleading in this particular use case. I don't want a new connection, just the current one. I think this is the way to go because the configuration is derived and I will always get the same connection, but I'm not sure and I can't find the answer in the documentation.

Answer 1

jOOQ's API makes no assumptions about the existence of a "current" connection. Depending on your concrete implementations of ConnectionProvider , TransactionProvider , etc., this may or may not be possible.

Your workaround is generally fine, though. Just make sure you follow the ConnectionProvider 's SPI contract:

Connection c = null;
try {
    c = configuration.connectionProvider().acquire();
    someOtherCode(c, ...);
}
finally {
    configuration.connectionProvider().release(c);
}

The above is fine when you're using jOOQ's DefaultTransactionProvider , for instance.

Note there is a pending feature request #4552 that will allow you to run code in the context of a ConnectionProvider and its calls to acquire() and release() . This is what it will look like:

DSL.using(configuration)
   .connection(c -> someOtherCode(c, ...));