With a metadata-based subaspect, when a join point in a class changes its characteristics only the annotation for the join point needs to be changed.
利用基于元数据的子方面,当类中的连接点改变其特性时,只有 这个连接点的注释需要改变。
Another problem is that the crosscutting views only show matches based on static join point shadows.
另一个问题是横切视图只显示了基于静态联结点shadow的匹配。
The optimizer considers star join optimization when appropriate and decides on star join plan based on cost considerations in order to come up with best execution plan for a star join query.
为了实现星型连接查询的最佳执行计划,优化器在适当的时候会考虑星型连接优化,并根据成本因素来决定星型连接计划。
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