Обсуждение: Duplicate Proxy.newProxyInstance calls during PGXAConnection.getConnection?

In the PGXAConnection.GetConnection() [1], we can see the below code:

@Override public Connection getConnection() throws SQLException { // the first time ConnectionHandler has been created. Connection conn = super.getConnection(); // When we're outside an XA transaction, autocommit // is supposed to be true, per usual JDBC convention. // When an XA transaction is in progress, it should be // false. if (state == State.IDLE) { conn.setAutoCommit(true); } /* * Wrap the connection in a proxy to forbid application from fiddling with transaction state * directly during an XA transaction */ // ConnectionHandler is created again here. ConnectionHandler handler = new ConnectionHandler(conn); return (Connection) Proxy.newProxyInstance(getClass().getClassLoader(), new Class[]{Connection.class, PGConnection.class}, handler); }

However I think the proxy has already been created at the first line: super.getConnection(), 

and then it is created later.  Is it a duplication? 

[1] https://github.com/pgjdbc/pgjdbc/blob/master/pgjdbc/src/main/java/org/postgresql/xa/PGXAConnection.java#L86 

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Best Regards

Andy Fan