gorm

1. Again, notice that GORM allows you to think in terms of objects instead of primary or foreign keys.: 同样地，我们注意到GORM也允许您从对象而不是主键或外键的角度来思考。

2. Grails recently released version 0.5, with improved performance, custom URLs, enhancements to GORM and more.: Grails最近发布了0.5版本，该版本包括了性能的提高，自定义url，增强GORM等一些特点。

3. If you provide a couple of specially named fields, GORM automatically timestamps your class, as shown in Listing 15.: 如果您提供几个特别的命名字段，GORM会自动给它们添加时间戳，如清单15所示。

4. Rather than adding a foreign key to either the Book or Author table, GORM adds book_id and author_id to the BookAuthor join table.: GORM向BookAuthor 连接表添加 book_id和 author_id，而不是向Book或Author 表添加一个外键。

5. Later, in "Many-to-many relationships with a dollop of Ajax," you used GORM to model increasingly sophisticated class relationships.: 之后的“使用Ajax实现多对多关系”教您使用GORM建模越来越复杂的类关系。

6. In "GORM: Funny name, serious technology," you were introduced to the basics of GORM, including simple one-to-many relationships.: “精通grails：GORM -有趣的名称，严肃的技术”向您介绍了GORM的基础知识，包括简单的一对多关系。

7. GORM helps mitigate the leaky-abstraction problem by allowing you to represent your object model in a way that makes sense in Groovy.: GORM有助于缓解抽象泄漏问题，它支持使用对Groovy有意义的方式表示对象模型，由 GORM在幕后处理关系数据库的问题。

8. Recall that GORM is a thin Groovy facade over Hibernate, so it shouldn't surprise you that all of your old Hibernate tricks will still work.: 回忆一下，GORM是一个优于Hibernate的瘦groovyfacade，因此，那些古老的Hibernate技巧仍然奏效也不足为奇。

9. The next statement tells Grails that the table does not have a version column. (GORM normally creates one to help facilitate optimistic locking.): 下一条语句通知Grails表没有version列（GORM通常会创建一个 version列来优化乐观锁定）。

10. If you are dealing with legacy tables, you should disable this feature so that GORM won't disrupt the schema that other applications might be expecting.: 因此，如果要处理遗留表的话，就一定要禁用该特性，这样GORM才不会破坏其他应用程序可能会用到的模式。

11. Now you'll see how the "ORM" in GORM has the flexibility to deal with table and column names in your legacy databases that don't follow standard GORM naming conventions.: 现在您将看到GORM的“ORM”如何能够灵活处理遗留数据库中不符合Grails标准命名约定的表名与列名。

12. Next you instantiate the class, what creates a new object (the instance) in the Gorm main window, and you connect the outlets and the actions to the corresponding components.: 下面，以这个组为例进行说明，这将在Gor m主窗口中创建一个新的目标，并且你可以将出口(Outlets)和行为关联到相应的部分。

13. Next you instantiate the class, what creates a new object (the instance) in the Gorm main window, and you connect the outlets and the actions to the corresponding components.: 下面，以这个组为例进行说明，这将在Gor m主窗口中创建一个新的目标，并且你可以将出口(Outlets)和行为关联到相应的部分。

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