Question

我有一个遗留系统，我正在迁移到Grails 3，但我遇到了一个命名约定问题。我们的一个表名为Application，但它也是运行应用程序的Groovy类的名称。似乎存在一个问题，即GORM混淆了2个类并给出了类型转换错误。我已经尝试在我的Application课程中明确地投射我的ApplicationDegree课程，试图强制GORM识别我尝试使用哪个课程但没有成功。

我知道一个选项是我可以将我的域Application类重命名为其他内容并手动将其映射到相应的数据库表，但我希望避免这种情况，因为我预计会遇到问题。

因此，除了重命名我的Domain类之外，我如何让Grails / GORM进行正确的映射。

Grails 3.1.4

代码：

ApplicationDegree ad = ApplicationDegree.findById(10);

类别：

class ApplicationDegree {

    Boolean isPrimary
    domain.package.Application application
    Degree degree

    static hasMany = [applicationDegreeMajors: ApplicationDegreeMajor,
                      applicationDegreeMinors: ApplicationDegreeMinor]
    static belongsTo = [domain.package.Application, Degree]

    static mapping = {
        version false
        degree column: 'degree_code'
        isPrimary column: 'isPrimary'
    }
}

StackTrace：

ERROR org.grails.spring.beans.factory.OptimizedAutowireCapableBeanFactory - Bean couldn't be autowired using grails optimization: Property 'application' threw exception; nested exception is java.lang.IllegalArgumentException: argument type mismatch
ERROR org.grails.spring.beans.factory.OptimizedAutowireCapableBeanFactory - Retrying using spring autowire
ERROR org.grails.web.errors.GrailsExceptionResolver - IllegalStateException occurred when processing request: [GET] /app4grad_V2/college/applications/
Cannot convert value of type [app4grad.Application] to required type [domain.package.Application] for property 'application': no matching editors or conversion strategy found. Stacktrace follows:
java.lang.reflect.InvocationTargetException: null
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.hibernate.InstantiationException: Could not instantiate entity:  : domain.package.ApplicationDegree
    at app4grad.college.ApplicationsController$$EPuFyMDe.index(ApplicationsController.groovy:14)
    ... 3 common frames omitted
Caused by: java.lang.reflect.InvocationTargetException: null
    ... 4 common frames omitted
Caused by: org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type [app4grad.Application] to required type [domain.package.Application] for property 'application'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [app4grad.Application] to required type [domain.package.Application] for property 'application': no matching editors or conversion strategy found
    ... 4 common frames omitted
Caused by: java.lang.IllegalStateException: Cannot convert value of type [app4grad.Application] to required type [domain.package.Application] for property 'application': no matching editors or conversion strategy found
    ... 4 common frames omitted

Grails 3域类的问题名为“Application”

0 个答案: