我有一个名为EmployeeDepartment的实体,如下所示
@IdClass(EmployeeDepartmentPK.class) //EmployeeDepartmentPK is a serializeable object
@Entity
EmployeeDepartment{
@Id
private String employeeID;
@Id
private String departmentCode;
---- Getters, Setters and other props/columns
}
我有一个Spring Data Repository定义如下
@RepositoryRestResource(....)
public interface IEmployeeDepartmentRepository extends PagingAndSortingRepository<EmployeeDepartment, EmployeeDepartmentPK> {
}
此外,我有一个注册转换器从String转换为EmployeeDepartmentPK。
现在,对于一个实体,由ID employeeID =&#34; abc123&#34;和departmentCode =&#34; JBG&#34;,我希望在调用SDR接口时使用的ID是abc123_JBG。 例如,http://localhost/EmployeeDepartment/abc123_JBG应该获取结果,实际上确实如此。
但是,当我尝试使用PUT保存实体时,Spring Data Commons的BasicPersistentEntity类中可用的ID属性值为 用于departmentCode的abc123_JBG。这是错的。我不确定这是否是预期的行为。
请帮忙。
谢谢!
答案 0 :(得分:13)
目前,Spring Data REST仅支持由单个字段表示的复合键。这实际上意味着仅支持@EmbeddedId
。我已提交DATAJPA-770来解决此问题。
如果您可以切换到@EmbeddedId
,您仍然需要以您希望在URI中表示复杂标识符的方式教授Spring Data REST,以及如何将路径段转换回您的实例id类型。为实现这一点,请实现BackendIdConverter
并将其注册为Spring bean。
@Component
class CustomBackendIdConverter implements BackendIdConverter {
@Override
public Serializable fromRequestId(String id, Class<?> entityType) {
// Make sure you validate the input
String[] parts = id.split("_");
return new YourEmbeddedIdType(parts[0], parts[1]);
}
@Override
public String toRequestId(Serializable source, Class<?> entityType) {
YourIdType id = (YourIdType) source;
return String.format("%s_%s", …);
}
@Override
public boolean supports(Class<?> type) {
return YourDomainType.class.equals(type);
}
}
答案 1 :(得分:4)
如果您无法使用@EmbeddedId
,您仍然可以使用@IdClass
。为此,当Oliver Gierke回答时,您需要BackendIdConverter,但您还需要为您的域类型添加Lookup:
@Configuration
public class IdClassAllowingConfig extends RepositoryRestConfigurerAdapter {
@Override
public void configureRepositoryRestConfiguration(RepositoryRestConfiguration config) {
config.withEntityLookup().forRepository(EmployeeDepartmentRepository.class, (EmployeeDepartment ed) -> {
EmployeeDepartmentPK pk = new EmployeeDepartmentPK();
pk.setDepartmentId(ed.getDepartmentId());
pk.setEmployeeId(ed.getEmployeeId());
return pk;
}, EmployeeDepartmentRepository::findOne);
}
}
答案 2 :(得分:0)
使用@BasePathAwareController
自定义Spring数据REST控制器。
@BasePathAwareController
public class CustInfoCustAcctController {
@Autowired
CustInfoCustAcctRepository cicaRepo;
@RequestMapping(value = "/custInfoCustAccts/{id}", method = RequestMethod.GET)
public @ResponseBody custInfoCustAccts getOne(@PathVariable("id") String id) {
String[] parts = id.split("_");
CustInfoCustAcctKey key = new CustInfoCustAcctKey(parts[0],parts[1]);
return cicaRepo.getOne(key);
}
}
使用示例uri /api/custInfoCustAccts/89232_70