validation rule

基本解釋

Supports a model validation rule that warns you when semantic elements are placed in Package
支持一個(gè)模型驗(yàn)證規(guī)則，它警告您語義學(xué)元素何時(shí)被放置到包中。
Rather than having each object maintain its own validation, you merely encode the correct validation rule for each object.
您只要為每個(gè)對(duì)象編碼正確的驗(yàn)證規(guī)則，而不是讓每個(gè)對(duì)象維護(hù)自己的驗(yàn)證。
This isn't ideal because it forces users to do more work and forces you to write another validation rule to make sure that they did it correctly.
這種做法不是很理想，因?yàn)樗笥脩糇龈嗟墓ぷ?，而且還要求必須要編寫另一個(gè)驗(yàn)證規(guī)則來確保用戶能正確輸入。