I want to update an entity, which has a one-to-many List collection of other entity. When the handler method gets called, the validation doesn't seem to run on the collection. I've read the documentation, and searched stackoverflow, but did not find anything useful.
Model:
#Entity
public class Employee {
#Id
#GeneratedValue
private int employeeId;
#NotEmpty
private String name;
#Min(value=18)
private int age;
#OneToMany(mappedBy="parent",cascade=CascadeType.ALL)
private List<Child> children;
//getters,setters
}
#Entity
public class Child {
#Id
#GeneratedValue
private int childId;
#Column(nullable=false)
#NotNull
#Size(min=1,message="Child's name must not be empty")
private String childName;
#Max(value=18)
private Integer age;
#ManyToOne
#JoinColumn(name="employeeId")
private Employee parent;
//getters,setters
}
In the controller:
#RequestMapping(value = { "/edit/{id}" }, method = RequestMethod.POST)
private String update(#PathVariable int id, ModelMap model, #Valid Employee employee, BindingResult result) {
if (result.hasErrors()) {
return "employee/edit";
}
employeeDao.merge(employee);
return "redirect:../list";
}
The validation works for the simple properties of the Employee bean, but not for the elements in the children list.
How can this be fixed?
Seems like you should decorate your children list with #Valid annotation, as described here.
It should look something like this:
#OneToMany(mappedBy="parent",cascade=CascadeType.ALL)
#Valid
private List<Child> children;
Related
I'm trying to make a Spring MVC application.I have 4 entities(Company,Pass_in_trip,Passenger,Trip) Pass_in_trip has 3 keys consisting of Passenger, Trip and Timestamp, I don't know how to properly issue a key and how to transfer it through the jsp page to the controller, and how to issue the controller itself, can anyone tell me?and also an interesting question is how to make a request to the database to search for a record using three keys.
Thanks
here's what I was able to write at the moment, see if there are any errors somewhere
#Entity
#Table(name="company")
public class Company implements Serializable {
#Id
#GeneratedValue(strategy = IDENTITY)
#Column(name="id_comp")
private int id_comp;
#Column(name="name")
private String name;
//Getters and Setters
#Entity
#Table (name="pass_in_trip")
public class Pass_in_trip implements Serializable {
#EmbeddedId
private KeysPass_in_trip key=new KeysPass_in_trip();
#Column(name="place")
private String place;
//Getters and Setters
#Embeddable
public class KeysPass_in_trip implements Serializable{
#NotNull
#JoinColumn(name="date")
private Timestamp date=new Timestamp(System.currentTimeMillis());
#OneToOne(cascade = CascadeType.ALL)
#JoinColumn(name = "id_psg")
private Passenger id_psg=new Passenger();
#OneToOne(cascade = CascadeType.ALL)
#JoinColumn(name = "trip_no" )
private Trip trip_no=new Trip();
//Getters and Setters
//#Override hashCode and equals
#Entity
#Table(name="passenger")
public class Passenger implements Serializable {
#Column(name="name")
private String name;
#NotNull
#Id
#Column(name="id_psg")
#GeneratedValue(strategy = IDENTITY)
private int id_psg;
//Getters and Setters
#Entity
#Table(name="trip")
public class Trip implements Serializable {
#NotNull
#Id
#Column(name="trip_no")
private int trip_no;
#ManyToOne(cascade = CascadeType.MERGE)
#JoinColumn(name = "id_comp")
private Company comp=new Company();
#Column(name="plane")
private String plane;
#Column(name="town_from")
private String town_from;
#Column(name="town_to")
private String town_to;
#Column(name="time_out")
private Timestamp time_out;
#Column(name="time_in")
private Timestamp time_in;
//Getters and Setters
Conroller
#Controller
#RequestMapping("/pass_in_trip/")
public class Aero_Controller_Pass_in_trip {
#Autowired
private Aero_DAO service;
public void setService(Aero_DAO service) {
this.service = service;
}
#RequestMapping(method=RequestMethod.GET)
public String list(Model uiModel) {
List <Pass_in_trip> pass_in_trip=service.findallPass_in_trip();
uiModel.addAttribute("pass_in_trip",pass_in_trip);
return "/pass_in_trip/list";
}
#PreAuthorize("hasRole('ROLE_Admin')")
#RequestMapping(value="delete/{id}",method=RequestMethod.GET)
public String delete(#PathVariable("id")int id, Model uiModel) {
if(service.findByIdPass_in_Trip(id)!=null)
service.delete_Pass_in_trip(id);
return "redirect:/pass_in_trip/";
}
#PreAuthorize("hasRole('ROLE_Admin')")
#RequestMapping(value="update/{id}",method=RequestMethod.GET)
public String updateform(#PathVariable("id")int id, Model uiModel) {
System.out.println("upform");
uiModel.addAttribute("pass_in_trip",service.findByIdPass_in_Trip(id));
System.out.println("upform2");
return "/pass_in_trip/edit";
}
#RequestMapping(value="update/0",method=RequestMethod.GET)
public String newform(Model uiModel) {
System.out.println("Привет!");
return "/pass_in_trip/edit";
}
#PreAuthorize("hasRole('ROLE_Admin')")
#RequestMapping(value="update/{id}",method = RequestMethod.POST)
public String update(Pass_in_trip pass_in_trip,BindingResult bindingResult,Model uiModel,HttpServletRequest httprervletrequest , RedirectAttributes redirectatributes) {
if (bindingResult.hasErrors()) {
uiModel.addAttribute("pass_in_trip", pass_in_trip);
return "pass_in_trip/update";}
service.save(pass_in_trip);
return "redirect:/pass_in_trip/";
}
}
List.jsp
interested in this part:
<s:authorize access="hasRole('ROLE_Admin')">
<td> To change </td>
<td> Delete </td>
</s:authorize>
Here's nodeEntity
#Data
#NodeEntity
public class Resource {
#Id
#GeneratedValue
private Long id;
#Property("name")
private String name;
private String code;
#Property("parent_code")
private String parentCode;
private String label;
private Neo4jRelationship relationship;
}
And here's relationship between nodes
#Data
#RelationshipEntity
public class Neo4jRelationship {
#Id
private Long id;
#StartNode
private Resource startNode;
#EndNode
private Resource endNode;
}
I want to query all the relationship satify some condition,
#Query("match p = (a : category_first {name: $name})-[*1..2]-() return p")
List<Neo4jRelationship> getFistCatNode(#Param("name") String name);
but the query return am empty list.
However, if I change the return type to org.neo4j.ogm.model.Result, the query can return normally.
I'm confused why the first way dosen't work. Any help will be grateful
I am new to Spring programming and trying the below example with one to many relationship between BID and BIDITEM classes. I am not sure whether the BIDITEM data is saved, as when I tried to retrieve the BID, I am getting only BID data and not BIDITEM data. Do we need to have a repository even for BIDITEM class. I can see that complete BID JSON string, along with BIDITEM is received in create method.
Could you please go through it, and let me know what is wrong with it.
#Entity
#Table(name = "bid")
public class Bid {
#Id
private String title;
#Column
private long startDate;
#Column
private long endDate;
#OneToMany(mappedBy = "myBid", cascade = {CascadeType.ALL})
private List<BidItem> bidItems = new ArrayList<BidItem>();
//Constructor, getter and setter methods go here
}
#Entity
#Table(name="biditem")
public class BidItem
{
#Id
private String item;
#Column
private String desc;
#Column
private double minAmt;
#ManyToOne
#JoinColumn(name = "title")
private Bid myBid;
//Constructor, getter and setter methods go here
}
public interface BidRepository extends CrudRepository<Bid, String> {
//Tried even JpaRepository
}
public class BidService {
ObjectMapper mapper = new ObjectMapper();
#Autowired
private BidRepository bidRepo;
public Bid create(String bidJson) throws JsonParseException, JsonMappingException, IOException
{
Bid bid = mapper.readValue(bidJson, Bid.class);
// bidJson string has below string
// {"bidItems":[{"item":"item1","desc":"item1","minAmt":"999"}],
// "title":"bid1","startDate":"D1","endDate":"D5"}
Bid savedBid = bidRepo.save(bid);
return savedBid;
}
public Bid findByID(String title)
{
Bid bid = bidRepo.findOne(title);
return bid;
}
}
I am working on a spring boot application with Hibernate as ORM and Jackson as JSON serialiser .
I have three model objects and CRUD operations for all three models.
Class Student{
private Teacher teacher; // Teacher of the student — to be fetched eagerly
+Getter/Setter
}
class Teacher {
private List<Subject> subject; // List of subjects associated to that user— to be fetched eagerly
+Getter/Setter
}
class Subject {
private long subjectId
//Other subject properties
+ Getter/Setter
}
Whenever I trigger a get request for student info I get the teacher info which is correct where as I also receive Subject info as well which is unnecessary for me. In the same time when I request for Teacher info, I need Subject info should be associated to that for sure. If I use #JsonBackReference for subject I am losing it all the time. I am not sure how to achieve this.
Thanks in advance for your help!!
You can also annotate like this
Class Student{
#JsonIgnoreProperties("subject")
private Teacher teacher; // Teacher of the student — to be fetched eagerly
}
You can use JSON Views
From the spring blog:
public class View {
interface Summary {}
}
public class User {
#JsonView(View.Summary.class)
private Long id;
#JsonView(View.Summary.class)
private String firstname;
#JsonView(View.Summary.class)
private String lastname;
private String email;
private String address;
private String postalCode;
private String city;
private String country;
}
public class Message {
#JsonView(View.Summary.class)
private Long id;
#JsonView(View.Summary.class)
private LocalDate created;
#JsonView(View.Summary.class)
private String title;
#JsonView(View.Summary.class)
private User author;
private List<User> recipients;
private String body;
}
and in the controller
#RestController
public class MessageController {
#Autowired
private MessageService messageService;
#JsonView(View.Summary.class)
#RequestMapping("/")
public List<Message> getAllMessages() {
return messageService.getAll();
}
#RequestMapping("/{id}")
public Message getMessage(#PathVariable Long id) {
return messageService.get(id);
}
}
PS: No link to http://fasterxml.com/ as it's currently down.
Can you tell me, why the record is posted twice in the database. I think. this happens because I use save() method. But shouldn't I save the master-entity and dependent-entity separately?
Controller method:
#RequestMapping(value = "/addComment/{topicId}", method = RequestMethod.POST)
public String saveComment(#PathVariable int topicId, #ModelAttribute("newComment")Comment comment, BindingResult result, Model model){
Topic commentedTopic = topicService.findTopicByID(topicId);
commentedTopic.addComment(comment);
// TODO: Add a validator here
if (!comment.isValid() ){
return "//";
}
// Go to the "Show topic" page
commentService.saveComment(comment);
return "redirect:../details/" + topicService.saveTopic(commentedTopic);
}
Services:
#Service
#Transactional
public class CommentService {
#Autowired
private CommentRepository commentRepository;
public int saveComment(Comment comment){
return commentRepository.save(comment).getId();
}
}
#Service
#Transactional
public class TopicService {
#Autowired
private TopicRepository topicRepository;
public int saveTopic(Topic topic){
return topicRepository.save(topic).getId();
}
}
Model:
#Entity
#Table(name = "T_TOPIC")
public class Topic {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private int id;
#ManyToOne
#JoinColumn(name="USER_ID")
private User author;
#Enumerated(EnumType.STRING)
private Tag topicTag;
private String name;
private String text;
#OneToMany(fetch = FetchType.EAGER, mappedBy = "topic", cascade = CascadeType.ALL)
private Collection<Comment> comments = new LinkedHashSet<Comment>();
}
#Entity
#Table(name = "T_COMMENT")
public class Comment
{
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private int id;
#ManyToOne
#JoinColumn(name="TOPIC_ID")
private Topic topic;
#ManyToOne
#JoinColumn(name="USER_ID")
private User author;
private String text;
private Date creationDate;
}
In this concrete case, you do not need to save the master and the client.
Saving the master or the client would be enough (with this concrete mapping)
But I think the main problem is that you do not have a good equals method in your Comment so your ORM Provider think that there are two different comments, and therefore store them twice.