准备好的语句共享连接

Question

There is an example that shows using transactions:

con.setAutoCommit(false);
updateSales = con.prepareStatement(updateString);
updateTotal = con.prepareStatement(updateStatement);
...
con.commit();
...
finally
updateSales close
updateTotal close

If I wanted to move two prepared statements into separate methods sharing a connection/transaction, each called from a parent method, I do not see how to handle closing the prepared statements, since the parent method would open the connection and then commit it.

parentmethod:
con.setAutoCommit(false)
method1(con)
method2(con)
con.commit()

Do not need to engineer it as such. Just felt logical to separate out the updates.

Answer 1

Why not have the PreparedStatement 's scope set to the class level? The parent method could then have a finally block that closes all resources that the child methods may have opened.

This still isn't the best solution (generally you'd want the same method that opened a resource to close the resource).

The elegant way, in my opinion, is to keep the PreparedStatement calls at the parent level, alongside other resources.