[英]How to create criteria in groovy/grails for nested object?
I need help on creating hibernate criteria for nested object. 我需要帮助创建嵌套对象的hibernate标准。 For example : 例如 :
class office{
Integer id;
OfficeDetails cmdData ;
}
class OfficeDetails {
Integer id;
Region region;
}
class Region {
Integer id;
Integer regionNum;
}
Now, from the service class ( officeService) I am trying to pull up all of the offices that matches a certain region as : 现在,从服务类(officeService)我试图将所有匹配特定区域的办公室拉出来:
List<Office> findAllByRegion( Integer regionNumber){
def criteria = { eq ( 'cmdData.region.regionNum', regionNumber ) }
def allOfficesInTheRegion = Office.findAll(criteria)
return allOfficesInTheRegion
}
Always getting exception :"org.hibernate.QueryException: could not resolve property:" I need to find out right way to create criteria for this query.Can anyone help? 总是得到异常:“org.hibernate.QueryException:无法解析属性:”我需要找到正确的方法来为此查询创建条件。任何人都可以帮忙吗?
See "querying associations" under the criteria section of the user guide : 请参阅用户指南的条件部分下的“查询关联”:
def criteria = {
cmdData {
region {
eq('regionNum', regionNumber)
}
}
}
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