@Override
    public boolean isReadOnly() throws SQLException {
      return _baseConn.isReadOnly();
    }
Fake derby driver - companion class to enable testing by TestObjectStoreStatementVerify.
This derby driver will call a verifying function during prepareStatement.
standalone-metastore/metastore-server/src/test/java/org/apache/hadoop/hive/metastore/StatementVerifyingDerby.java