使用具有以下版本的 Grails：
APPLICATION STATUS
App version: 0.1
Grails version: 2.3.5
Groovy version: 2.1.9
JVM version: 1.7.0_51
Reloading active: true
Controllers: 15
Domains: 18
Services: 2
Tag Libraries: 13
我有一个要遵循的域模型。我在编程之前在 MySQL 中构建了表。
在模型中，我有以多对多关系绑定到人（Persons）的 Insertion_orders。此关系由 Insertion_orders_persons 定义，person_id 和 location_id 定义 Insertion_orders_persons 中的条目。此外，还有一个类型值是 ENUMed，可以是 Trafficker、Advertiser、Agency 或（或）Salesperson。一个（或多个）贩运者总是会出现，但其余的可能、可能不存在或具有许多此类关联。我正在尝试根据类型将它们绑定到 Insertion_orders 模型：
package cms
class Insertion_orders {
String insertion_order_name
String po_number
String notes
String toString() {
"${insertion_order_name} - ${id}"
}
static hasMany = [trafficker: Insertion_orders_traffickers, salesperson: Insertion_orders_salespersons]
static constraints = {
insertion_order_name(blank:false)
po_number()
notes(widget: 'textarea', nullable:true)
}
static mapping ={
version false
id column: 'insertion_order_id'
notes sqlType: 'text'
}
}
我正在尝试使用继承和鉴别器值来实现这一点。
package cms
class Insertion_orders_persons {
Persons person
Insertion_orders insertion_order
Type type
String toString() {
"${person}: ${type}"
}
enum Type {
Trafficker, Salesperson, Advertiser, Agency
}
static constraints = {
}
static mapping = {
version false
id column: 'insertion_order_person_id'
discriminator column: "type"
}
}
class Insertion_orders_traffickers extends Insertion_orders_persons {
static mapping ={
discriminator value: "Traffickers"
}
}
class Insertion_orders_salespersons extends Insertion_orders_persons {
static mapping ={
discriminator value: "Salesperson"
}
}
问题是当我尝试加入扩展类时（如在 Insertion_orders 类中的 hasMany 中），Grails 无法启动并生成以下内容：
|Loading Grails 2.3.5
|Configuring classpath
.
|Environment set to development
.................................
|Packaging Grails application
..........................................
|Running Grails application
Error |
2014-04-16 11:33:58,693 [localhost-startStop-1] ERROR context.GrailsContextLoader - Error initializing the application: Error creating bean with name 'transactionManagerPostProcessor': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is org.hibernate.MappingException: Association references unmapped class: cms.Insertion_orders_salespersons
Message: Error creating bean with name 'transactionManagerPostProcessor': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is org.hibernate.MappingException: Association references unmapped class: cms.Insertion_orders_salespersons
Line | Method
->> 262 | run in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 744 | run in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is org.hibernate.MappingException: Association references unmapped class: cms.Insertion_orders_salespersons
->> 262 | run in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 744 | run in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is org.hibernate.MappingException: Association references unmapped class: cms.Insertion_orders_salespersons
->> 262 | run in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 744 | run in java.lang.Thread
Caused by MappingException: Association references unmapped class: cms.Insertion_orders_salespersons
->> 262 | run in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 744 | run in java.lang.Thread
Error |
Forked Grails VM exited with error
作为附加信息，无论我如何尝试访问子类或子类组合，我都会收到相同的错误。
这似乎是一个非常基本的功能。有人可以告诉我我错过了什么或做错了什么吗？