StatementContextBase<?, ?, ?> targetNodeStmtCtx = (StatementContextBase<?, ?, ?>) targetNodePre.get();
StatementContextBase<?, ?, ?> sourceGrpStmtCtx = (StatementContextBase<?, ?, ?>) sourceGroupingPre.get();
StatementContextBase<?, ?, ?> targetNodeStmtCtx = (StatementContextBase<?, ?, ?>) targetNodePre.get();
StatementContextBase<?, ?, ?> sourceGrpStmtCtx = (StatementContextBase<?, ?, ?>) sourceGroupingPre.get();