Because there are a few OODBs which support the metaclass mechanism, this methodology has limitation to some degree.
但只有少数的OODBs支持元类机制,因此该方法存在一定的局限性。
参考来源 - 部分—整体语义联系和OODBs的集成研究·2,447,543篇论文数据,部分数据来源于NoteExpress
以上来源于: WordNet
Metaclasses are more fragile than many people realize.
元类比很多人认识到的更加脆弱。
On the plus side, all issues for inherited _metaclass_ hooks and for custom metaclasses are handled
从好的方面看,继承的 _metaclass_ 钩子和自定义元类的所有问题都被解决了
The metaclasses being extended by the stereotype are specified on the Extensions tab in the Properties view.
元类被原型所扩展,是在属性视图 Extensions 标检页完成的。
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