本文介绍了具有接口属性的Grails FindBy *的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个类似的课程
class Account {
BigDecimal balance = 0
SortedSet transactions
AccountOwner owner
static constraints = {
}
static hasMany = [transactions:Transaction]
}
当我尝试查询
def account = Account.findByOwner(user)
我收到此错误
| Failure: testSave(br.com.fisgo.financial.AccountControllerTests)
| org.springframework.dao.InvalidDataAccessResourceUsageException: Cannot query [br.com.fisgo.financial.Account] on non-existent property: owner
at org.grails.datastore.mapping.simple.query.SimpleMapQuery.getValidProperty(SimpleMapQuery.groovy:706)
at org.grails.datastore.mapping.simple.query.SimpleMapQuery.executeSubQueryInternal(SimpleMapQuery.groovy:644)
at org.grails.datastore.mapping.simple.query.SimpleMapQuery.executeSubQuery(SimpleMapQuery.groovy:630)
at org.grails.datastore.mapping.simple.query.SimpleMapQuery.executeQuery(SimpleMapQuery.groovy:63)
at org.grails.datastore.mapping.query.Query.list(Query.java:486)
at org.grails.datastore.gorm.finders.AbstractFindByFinder.invokeQuery(AbstractFindByFinder.java:34)
at org.grails.datastore.gorm.finders.AbstractFindByFinder$1.doInSession(AbstractFindByFinder.java:26)
at org.grails.datastore.mapping.core.DatastoreUtils.execute(DatastoreUtils.java:301)
at org.grails.datastore.gorm.finders.AbstractFinder.execute(AbstractFinder.java:40)
at org.grails.datastore.gorm.finders.AbstractFindByFinder.doInvokeInternal(AbstractFindByFinder.java:24)
at org.grails.datastore.gorm.finders.DynamicFinder.invoke(DynamicFinder.java:151)
at org.grails.datastore.gorm.finders.DynamicFinder.invoke(DynamicFinder.java:352)
at org.grails.datastore.gorm.GormStaticApi.methodMissing(GormStaticApi.groovy:108)
at br.com.fisgo.financial.AccountController.buyLead(AccountController.groovy:17)
at br.com.fisgo.financial.AccountControllerTests.testSave(AccountControllerTests.groovy:92)
| Completed 1 unit test, 1 failed in 5414ms
| Tests FAILED - view reports in target\test-reports
使用此界面
package br.com.fisgo.financial;
public interface AccountOwner {
}
我正在使用模拟对象进行测试
I'm using mocked object for testing
谢谢
推荐答案
由于findBy *由GORM处理，而GORM不处理接口，因此我认为它不会起作用.您可以将AccountOwner设为抽象类吗?
Since findBy* are handled by GORM and GORM doesn't handle interfaces I don't think it's going to work. Could you make AccountOwner an abstract class?
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