Persisting data with JPA with existing datas - spring-boot

I want to persist an object like this one :
{
"paymentMode": "CREDIT CARD",
"totalAmount": 158.0,
"orderProducts": [
{
"productKeyId": "HycaR7sPeecIMZEewanuK0jzPo7S33",
"name": "Cornish crab salad, brown crab mayonnaise, toasted muffin",
"price": 20.0,
"qty": 1,
"imgPath": "pathImage",
"category": {
"categoryKeyId": "23ume70Fu6yqyGUWfQkW110P4ko3gZ",
"name": "Starter"
}
},...
],
"seller": {
"userKeyId": "qmNR5g2TD8Ja5KvA1DCQWzYj55nvbP",
"firstName": "David",
"lastName": "Vera",
"email": "david.vera#9online.fr",
"addresses": [
{
"addressKeyId": "2t7x0bFgP5B9Qb2ymnLL5aPZVwMFhJ",
"city": "Vancouver",
"country": "Canada",
"streetName": "123 street name",
"postalCode": "ABCCBA",
"type": "billing",
},...
]
},
"createdAt": "2019-10-22T09:48:06.000+0000"
}
Some object are already stored in Database such as seller, addresses, products and product category.
I created : Orders tables
#Entity
#Table(name="orders")
#Getter #Setter
public class OrderEntity implements Serializable {
#Getter(AccessLevel.NONE)
#Setter(AccessLevel.NONE)
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy= GenerationType.IDENTITY)
private Long id;
#Column(nullable = false, unique = true)
private String orderKeyId;
// A sale belong to one seller
#ManyToOne(fetch = FetchType.LAZY)
private UserEntity seller;
private String paymentMode;
private double totalAmount;
#OneToMany(mappedBy = "pk.order")
#Valid
private List<OrderProductEntity> orderProducts;
}
An order_product table (pivot table):
#Entity
#Table(name="order_product")
#Getter #Setter
public class OrderProductEntity {
#EmbeddedId
#JsonIgnore
private OrderProductPK pk;
#Column(nullable = false)
private Integer qty;
// default constructor
public OrderProductEntity() {
super();
}
public OrderProductEntity(OrderEntity order, ProductEntity product, Integer quantity) {
pk = new OrderProductPK();
pk.setOrder(order);
pk.setProduct(product);
this.qty = quantity;
}
#Transient
public ProductEntity getProduct() {
return this.pk.getProduct();
}
...
}
And a product table
#Entity
#Table(name="products")
#Getter #Setter
public class ProductEntity implements Serializable {
#Getter(AccessLevel.NONE)
#Setter(AccessLevel.NONE)
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy= GenerationType.IDENTITY)
private Long id;
#Column(nullable = false)
private String productKeyId;
// many to one relationship with category
#ManyToOne
#JoinColumn(name = "category_id")
private CategoryEntity category;
#Column(nullable = false)
private String name;
#Column(nullable = false)
private double price;
#Column(nullable = false)
private int qty;
private String imgPath;
#JsonManagedReference
#OneToMany(mappedBy = "pk.product", fetch = FetchType.EAGER)
#Valid
private List<OrderProductEntity> orderProducts;
}
The userEntity class :
#Entity
#Table(name = "users")
#Getter #Setter
public class UserEntity implements Serializable {
#Getter(AccessLevel.NONE)
#Setter(AccessLevel.NONE)
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy= GenerationType.IDENTITY)
private Long id;
#Column(nullable = false, unique = true)
private String userKeyId;
#Column(nullable = false, length = 50)
private String firstName;
#Column(nullable = false, length = 50)
private String lastName;
#Column(nullable = false, length = 120, unique = true)
private String email;
#Column(nullable = false)
private String encryptedPassword;
private String emailVerificationToken;
// column definition do not work for all database engine. So set the value to false is the same
// #Column(nullable = false, columnDefinition = "boolean default false")
#Column(nullable = false)
private Boolean emailVerificationStatus = false;
// One user can have Many Addresses
#OneToMany(mappedBy = "userDetails", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
#JsonManagedReference
private List<AddressEntity> addresses;
}
And finally the embedded class :
#Embeddable
#Getter #Setter
#ToString
public class OrderProductPK implements Serializable {
private static final long serialVersionUID = 476151177562655457L;
#ManyToOne(optional = false, fetch = FetchType.LAZY)
#JoinColumn(name = "order_id")
private OrderEntity order;
#ManyToOne(optional = false, fetch = FetchType.LAZY)
#JoinColumn(name = "product_id")
private ProductEntity product;
...
}
I created a controller method to persist orders in a MySQL database:
public OrderRest createOrder(#RequestBody OrderRequestModel orderRequestModel) throws Exception {
OrderRest returnValue = new OrderRest();
ModelMapper modelMapper = new ModelMapper();
OrderDto orderDto = modelMapper.map(orderRequestModel, OrderDto.class);
OrderDto createdOrder = orderService.createOrder(orderDto);
returnValue = modelMapper.map(createdOrder, OrderRest.class);
// 5. Return the expected object
return returnValue;
}
I have an orderDTO object that contains several fields (including ID).
public class OrderDto implements Serializable {
#Getter(AccessLevel.NONE)
#Setter(AccessLevel.NONE)
private static final long serialVersionUID = 1L;
private Long id;
private String orderKeyId;
private String paymentMode;
private double totalAmount;
private List<ProductDto> orderProducts;
private UserDto seller;
private Date createdAt;
}
My productDTO object
public class ProductDto implements Serializable {
// ommit this member and do not generate getter / setter
#Getter(AccessLevel.NONE)
#Setter(AccessLevel.NONE)
private static final long serialVersionUID = 1L;
private Long id;
private String productKeyId;
private String name;
private double price;
private int qty;
private String imgPath;
private CategoryDto category = new CategoryDto();
}
The UserDto :
#Getter #Setter
#ToString
public class UserDto implements Serializable {
// ommit this member and do not generate getter / setter
#Getter(AccessLevel.NONE)
#Setter(AccessLevel.NONE)
private static final long serialVersionUID = 1L;
private long id;
private String userKeyId;
private String firstName;
private String lastName;
private String email;
private String password;
private String encryptedPassword;
private String emailVerificationToken;
private Boolean emailVerificationStatus = false;
private List<AddressDto> addresses;
// private List<RoleDto> roles;
}
the controller is calling my service layer :
#Override
public OrderDto createOrder(OrderDto orderDto) {
// create a new order
ModelMapper modelMapper = new ModelMapper();
OrderEntity orderEntity = modelMapper.map(orderDto, OrderEntity.class);
String orderKeyId = utils.generateOrderKeyId(30);
orderEntity.setOrderKeyId(orderKeyId);
orderEntity.setCreatedAt(orderDto.getCreatedAt());
orderEntity.setPaymentMode(orderDto.getPaymentMode());
orderEntity.setTotalAmount(orderDto.getTotalAmount());
// set the seller
UserEntity userEntity = modelMapper.map(orderDto.getSeller(), UserEntity.class);
orderEntity.setSeller(userEntity);
List<OrderProductEntity> orderProductEntities = new ArrayList<>();
// set the products
for (int i = 0; i < orderDto.getOrderProducts().size(); i++) {
ProductDto productDto = orderDto.getOrderProducts().get(i);
OrderProductEntity orderProductEntity = modelMapper.map(orderDto.getOrderProducts().get(i), OrderProductEntity.class);
orderProductEntities.add(orderProductEntity);
orderDto.getOrderProducts().set(i, productDto);
}
orderEntity.setOrderProducts(orderProductEntities);
OrderEntity storedOrder = orderRepository.save(orderEntity);
OrderDto returnValue = modelMapper.map(storedOrder, OrderDto.class);
return returnValue;
}
I have 3 issues :
I save the order in the database but the seller is not persisted
In the order product table datas are not persisted.
And i obtain an error message in my rest response :
"trace": "org.modelmapper.MappingException: ModelMapper mapping errors: Converter org.modelmapper.internal.converter.CollectionConverter#685b36d6 failed to convert java.util.List to java.util.List.error...

Related

Sending file and JSON in a many-to-many relationship

I have a model called EPI that has a many to many relationship with Model Images, I am not able to do the #PostMapping for this object.
see my code
EPI Entity:
#Entity
#Data
#NoArgsConstructor
#AllArgsConstructor
#Builder
#Table(name = "EPI")
public class EPI implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(name = "Id_EPI")
private UUID id;
#Column(name = "Nome", nullable = false, length = 100)
private String nome;
#Column(name = "Marca", nullable = false, length = 100)
private String marca;
#Column(name = "CA", nullable = false, length = 100)
private String ca;
#Column(name = "Descricao", nullable = false)
private String descricao;
#Column(name = "Foto")
#ManyToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
#JoinTable(name = "epi_images",
joinColumns = {
#JoinColumn(name = "epi_id")
},
inverseJoinColumns = {
#JoinColumn(name = "image_id")
})
private Set<ImageModel> foto;
#Column(name = "Quantidade", nullable = false)
private Integer quantidade;
}
Image Entity:
#Entity
#Data
#NoArgsConstructor
#AllArgsConstructor
#Builder
#Table(name = "image_model")
public class ImageModel implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private UUID id;
private String name;
#Column(name = "type")
private String type;
#Column(name = "image_data", unique = false, nullable = false, length = 100000)
private byte[] imageData;
}
Controller EPI:
#PostMapping("/addNewEPI")
public ResponseEntity<Object> salvarFEPI(#RequestPart("image")MultipartFile file,
#RequestPart("epiModel") EPI epi) throws IOException {
try {
ImageModel foto = productImageService.uploadImage(file);
epi.setFoto((Set<ImageModel>) foto);
return ResponseEntity.status(HttpStatus.CREATED).body(epiService.save(epi));
} catch (Exception e){
System.out.println(e.getMessage());
return null;
}
Service Image:
public ImageModel uploadImage(MultipartFile file) throws IOException {
ImageModel image = new ImageModel();
image.setName(file.getOriginalFilename());
image.setType(file.getContentType());
image.setImageData(ImageUtility.compressImage(file.getBytes()));
return image;
}
As I am passing the parameters in Postman:
enter image description here
Return from Spring Boot:
enter image description here
If anyone can help me I would be very grateful!
I tried passing the parameters in different ways. I just want it to populate my tables passing the parameters of the EPI entity and the Image file.
enter image description here

Question on persisting entity with Bidirectional #ManyToOne relationship using Mapstruct

This is my first time implementing #ManyToOne relationship using JPA/Mapstruct/Spring boot. I am running into the below exception: (NOTE: Using generic names as I am unable to share all the details)
java.sql.SQLIntegrityConstraintViolationException: Column 'A_ID' cannot be null for class B when I try to persist A.
Below are the relevant details. Can you help me understand what is the mistake I am making here? I have spent few hours debugging this and reading the posts without success yet.
#Mapper(componentModel="spring", uses= {BMapper.class}, collectionMappingStrategy = CollectionMappingStrategy.ADDER_PREFERRED)
public interface AMapper {
#Mapping(target = "aId", source="id")
#Mapping(target = "aName", source = "name")
ADTO toDTO(final A a);
#Mapping(target = "id", ignore=true)
#Mapping(target = "name", source = "aName")
A toEntity(final ADTO aDTO);
#AfterMapping
default void setBSet(A a, #MappingTarget aDTO dto) {
for(B b : a.getBs())
b.setA(a);
}
}
#Mapper(componentModel="spring", uses= {CMapper.class}, injectionStrategy = InjectionStrategy.CONSTRUCTOR )
public interface BMapper {
#Mapping(target = "bId", source="id")
#Mapping(target = "aName", ignore=true)
BDTO toDTO(final B b);
#Mapping(target = "id", ignore=true)
#Mapping(target = "a", ignore=true)
B toEntity(final BDTO bDTO);
Set<B> bDtoToBSetEntity(Set<BDTO> set);
Set<BDTO> bSetEntityToBDto(Set<B> set);
}
Below are the class definitions of ADTO and BDTO
public class ADTO implements Serializable {
private static final long serialVersionUID = 8307772637314390585L;
private Long aId;
private String aName;
private LocalDate startDate;
private LocalDate endDate;
private Set<BDTO> bs = new HashSet<>();
// Getters / Setters here
public void addToBs(BDTO b) {
if(b != null) {
bs.add(b);
}
}
// hashCode/equals/toString methods here...
}
public class BDTO implements Serializable {
private static final long serialVersionUID = 2562084231749296452L;
private Long bId;
private String name;
private LocalDate startDate;
private LocalDate endDate;
private String aName;
// getters / setters go here..
// hashCode/equals/toString methods here...
}
Below are the class definitions of entity classes, particularly pay attention to class B where the exception is related to.
#Entity
#Table(name = "TABLEB", uniqueConstraints = {
#UniqueConstraint(columnNames = "ID")})
public class B implements Serializable {
private static final long serialVersionUID = 1407209531508355406L;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "ID", unique = true, nullable = false)
private Long id;
#Enumerated(EnumType.STRING)
#Column(name = "NAME", nullable = false)
private String name;
#ManyToOne(fetch = FetchType.EAGER)
#JoinColumn(name = "A_ID", referencedColumnName="ID")
private A a;
#Column(name = "START_DATE", unique = false, nullable = false)
private LocalDate startDate;
#Column(name = "END_DATE", unique = false, nullable = false)
private LocalDate endDate;
}
#Entity
#Table(name = "TABLEA", uniqueConstraints = {
#UniqueConstraint(columnNames = "ID")})
public class A implements Serializable {
private static final long serialVersionUID = 6926335188960198569L;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "ID", unique = true, nullable = false)
private Long id;
#Column(name = "NAME", unique = false, nullable = false, length = 100)
private String name;
#OneToMany(mappedBy="a"/*, fetch = FetchType.EAGER*/, cascade = {CascadeType.ALL})
private Set<B> bs = new HashSet<>();
#Column(name = "START_DATE", unique = false, nullable = false)
private LocalDate startDate;
#Column(name = "END_DATE", unique = false, nullable = false)
private LocalDate endDate;
}
I am just calling save method of ADao class that persists using entity Manager.

How to fix jpa one to many

Need to fetch data from one table to another.I performed jpa one to many mapping. But id cannot fetched. Where is my mistake?
I have tried mapping using one to many and many to one concepts but can't able to fetch data from one table to another
User.java
#Entity
#Table(name = "users")
public class User implements Serializable{
private static final long serialVersionUID = 1L;
#Id
#Column(name = "User_ID")
#GeneratedValue(generator="system-uuid")
#GenericGenerator(name="system-uuid", strategy = "uuid")
private String id;
private String firstName;
private String lastName;
private Long phoneNumber;
#NotNull(message="Password is compulsory")
#Email(message = "Email is invalid")
private String email;
private String password;
#OneToMany(mappedBy="user", cascade = CascadeType.ALL)
Set<Data> data = new HashSet<Data>();
public Set<Data> getData() {
return data;
}
public void setData(Set<Data> data) {
this.data = data;
}
public User() {
super();
}
Data.java
#Entity
#Table(name = "data")
public class Data implements Serializable{
private static final long serialVersionUID = 1L;
#Id
#Column(name = "DataID")
#GeneratedValue(generator="system-uuid")
#GenericGenerator(name="system-uuid", strategy = "uuid")
private String id;
#ManyToOne(fetch = FetchType.EAGER,cascade= CascadeType.ALL)
#JoinColumn(name = "User_ID")
private User user;
public Data() {
super();
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
DataController.java
#PostMapping("/data/{userId}")
public Data createData(
#PathVariable(value= "userId") String userId,
#Valid #RequestBody Data data) {
return userRepository.findById(userId).map(user -> {
data.setUser(user);
return dataRepository.save(data);
}).orElseThrow(() -> new ResourceNotFoundException("userId" + userId +
"not found"));
}
Results in no error but can't able to fetch user id

JPA Specification filtering nested object

I am trying to fetch nested object property but getting illegalArgument exception.
AuditTestingPlanSpecification name = new AuditTestingPlanSpecification(new SearchCriteria("auditPlanId.auditPlanEntity", ":",dates));
Page<AuditTestingPlanMaster> a = auditTestingPlanMasterRepository.findAll(name, ten);
Please find below code,
public class AuditTestingPlanSpecification implements Specification<AuditTestingPlanMaster> {
private SearchCriteria criteria;
public AuditTestingPlanSpecification(SearchCriteria searchCriteria) {
this.criteria = searchCriteria;
}
#Override
public Predicate toPredicate(Root<AuditTestingPlanMaster> root, CriteriaQuery<?> query, CriteriaBuilder builder) {
if (root.get(criteria.getKey()).getJavaType() == String.class) {
return builder.like(root.<String>get(criteria.getKey()), "%" + criteria.getValue().get(0).toString() + "%");
} else {
return builder.equal(root.get(criteria.getKey()), criteria.getValue().get(0).toString());
}
return null;
}
}
Class SearchCriteria.java
public class SearchCriteria {
public SearchCriteria(String key, String operation, List<Object> value) {
super();
this.key = key;
this.operation = operation;
this.value = value;
}
private String key;
private String operation;
private List<Object> value;
// getters & setters
}
Class AuditTestingPlanMaster.java
#Entity
#Table(name = "audit_testing_plan_master")
#Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class AuditTestingPlanMaster implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "sequenceGenerator")
#SequenceGenerator(name = "sequenceGenerator")
private Long id;
#Column(name = "risk_area_id")
private Long riskAreaId;
#Column(name = "expected_revert_date")
private Instant expectedRevertDate;
#Column(name = "created_date")
private Instant createdDate;
#Column(name = "last_modified_date")
private Instant lastModifiedDate;
#JoinColumn(name = "audit_plan_id", referencedColumnName = "id")
private AuditPlanMaster auditPlanId;
//getters & setters
}
Class AuditPlanMaster.java
#Entity
#Table(name = "audit_plan_master")
#Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class AuditPlanMaster implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "sequenceGenerator")
#SequenceGenerator(name = "sequenceGenerator")
private Long id;
#Column(name = "remarks", length = 255)
private String remarks;
#Column(name = "audit_plan_entity", length = 50)
private String auditPlanEntity;
#Column(name = "start_date")
private Instant startDate;
#Column(name = "end_date")
private Instant endDate;
//getters & setters
}
I want to fetch all the AuditTestingPlanMaster objects whose AuditPlanMaster.auditPlanEntity string is matching with provided filter value.
Thank you for your time and help in advance.
I had the same problem, here is a snippet of how I handled it. My problem was when accessing id field from inner usuario object, in my case, id would be like your auditPlanEntity, and usuario would be like auditplanMaster:
public static Specification<UsuarioErrorEquipo> usuarioContains(String codigoUsuario) {
return (root, query, builder) -> {
Path<Usuario> u = root.get("usuario");
return builder.equal(u.get("id"), codigoUsuario);
};
}
I believe, that in your case it should be something like:
Path<AuditPlanMaster> u = root.get("auditPlanId");
return builder.equal(u.get("auditPlanEntity"), "the value you want to compare");

JPA repository null pointer exception for many to one mapping with composite primary key

Post class
one to many mapping
Composite primary key using id
I am getting null pointer exception when I make get request for getting comments
#Entity
#Table(name = "posts")
public class Post {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
#NotNull
#Size(max = 100)
#Column(unique = true)
private String title;
#NotNull
#Size(max = 250)
private String description;
#NotNull
#Lob
private String content;
#NotNull
#Temporal(TemporalType.TIMESTAMP)
#Column(name = "posted_at")
private Date postedAt = new Date();
#NotNull
#Temporal(TemporalType.TIMESTAMP)
#Column(name = "last_updated_at")
private Date lastUpdatedAt = new Date();
#OneToMany(cascade = CascadeType.ALL,
fetch = FetchType.LAZY,
mappedBy = "post")
private Set<Comment> comments = new HashSet<>();
public Post() {
}
public Post(String title, String description, String content) {
this.title = title;
this.description = description;
this.content = content;
}
//getters and setters
}
Comment class
many to one mapping with composite primary keys using #Idclass
#Entity
#IdClass(CommentId.class)
#Table(name = "comments")
public class Comment {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
#NotNull
#Lob
private String text;
#Id
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "post_id", nullable = false)
private Post post;
public Comment() {
}
public Comment(String text) {
this.text = text;
}
//getters and setters
}
Id class
CommentId
public class CommentId implements Serializable {
private static final long serialVersionUID = 1L;
private Post post;
private Long id;
public CommentId(Post post, Long id) {
super();
this.post = post;
this.id = id;
}
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result+ ((post == null) ? 0 : post.hashCode());
result = prime * result ;
return result;
}
public boolean equals(Object object) {
if (object instanceof CommentId) {
CommentId pk = (CommentId)object;
return id.equals(pk.id) && post == pk.post;
} else {
return false;
}
}
//getters and setters
}
repositories
PostRepository
CommentRepository
#Repository
public interface PostRepository extends JpaRepository<Post, Long> {
}
#Repository
public interface CommentRepository extends JpaRepository<Comment, Long>
{
}
Controller class get request and I am using mysql database
#RestController
#RequestMapping("/demo")
public class Controller {
#Autowired
PostRepository ps;
CommentRepository cs;
#GetMapping("/post")
public List<Post> getAll(){
return ps.findAll();
}
#GetMapping("/comment")
public List<Comment> getAllcom(){
return cs.findAll();
}
}

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