春天JPA庫：如何發送默認值參數，如果標準不匹配

Question

@Repository 
public interface WANRepository extends JpaRepository<WANConfiguration,Long>{ 
    @Query("select ads from WANConfiguration as ads where ?1 BETWEEN ads.minAge AND ads.maxAge AND ads.expiryTime >?2 and ads.region=?3 and ads.gender=?4") 
    List<WANConfiguration> findByAllAdsForUser(Integer userAge,Date currentTime,String region, String gender); 
} 

這裏是調用代碼

List<WANConfiguration> list = fanRepository.findByAllAdsForUser(userAgeInYear, new Date(),userLocation.getRegionName(), user.getGender().name()); 

現在還有就是我想通過默認區域的情況下，即，用戶位置.getRegionName（），那麼我該如何做以及在數據庫和存儲庫或查詢中需要做哪些更改？

Answer 1

您可以創建上述方法層：

List<WANConfiguration> findByAllAdsForUser(Integer userAge,Date currentTime,String region, String gender) { 
    if(region == null || region.isEmpty()) { 
     String defaultRegion = "what you want"; 
     return findByAllAdsForUser(userAge, currentTime, defaultRegion, gender); 
    } 
    return findByAllAdsForUser(userAge, currentTime, region, gender); 
}