Database Mapping 用法

默认情况下domain类映射到数据库的方式，使用合理的默认值.可以使用ORM Mapping DSL来定制.例如下面的`Book` domain:

And then you can use the mapping block to customize the ORM mapping behavior.

import grails.persistence.Entity;
import org.grails.datastore.gorm.GormEntity
@Entity
class Book implements GormEntity<Book>{
    String title;
    Date releaseDate;
    Author author;
    static mapping = {
        table (name:"book_table")
        comment "图书表"
        author column: "auth_id"
}

参看 GORM 了解更多.