How do I make a composite primary key out of 2 foreign keys like this?
When I do this in my Account:
#Entity
public class Account {
#Id
private int id;
private String number;
private String IBAN;
private String name;
#OneToMany(mappedBy = "account")
private List<Payment> payments = new ArrayList<>();
public List<Payment> getPayments() {
return payments;
}
public void setPayments(List<Payment> payments) {
this.payments = payments;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getNumber() {
return number;
}
...
And in Payment:
#Entity
#IdClass(AccountPK.class)
public class Payment {
#Id
private int id;
private Timestamp date;
private float amount;
private String currency;
private String detail;
#Id
private int accountId;
#Id
private int counterAccountId;
private int labelId;
#ManyToOne
private Account account;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public Timestamp getDate() {
return date;
}
public void setDate(Timestamp date) {
this.date = date;
...
How can I join those?
Assuming the id field is not part of the primary key, remove its #Id annotation. Then annotate the two account fields like this:
#Entity
#IdClass(AccountPK.class)
public class Payment {
private int id;
private Timestamp date;
private float amount;
private String currency;
private String detail;
private int labelId;
#Id
#ManyToOne
private Account account;
#Id
#ManyToOne
private Account counterAccount;
...
Some examples like this are in the JPA 2.2 spec section 2.4.1.
Related
I have one-to-one relationship with the following configuration:
#Entity
#Table(name = "org")
#SequenceGenerator(name = "default_gen", sequenceName = "haj_rasoul", allocationSize = 1)
public class Organization extends BaseEntity<Long> {
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
and this class:
#Entity
#Table(name = "product")
#GenericGenerator(name = "default_gen", strategy = "foreign", parameters = #Parameter(name = "property", value = "reza"))
public class Product extends BaseEntity<Long> {
#Column(name = "DD")
private String description;
#Column(name = "PP")
private BigDecimal price;
#Column(name = "MM")
private String imageUrl;
#OneToOne
#PrimaryKeyJoinColumn(referencedColumnName = "id")
private Organization reza;
public Organization getReza() {
return reza;
}
public void setReza(Organization reza) {
this.reza = reza;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public BigDecimal getPrice() {
return price;
}
public void setPrice(BigDecimal price) {
this.price = price;
}
public String getImageUrl() {
return imageUrl;
}
public void setImageUrl(String imageUrl) {
this.imageUrl = imageUrl;
}
}
and the BaseEntity:
#MappedSuperclass
public abstract class BaseEntity<T> implements Serializable {
private static final long serialVersionUID = 4295229462159851306L;
#Id
#GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "default_gen")
private T id;
#Column(name = "updatedby")
private Date updatedDate;
public Date getUpdatedDate() {
return updatedDate;
}
public void setUpdatedDate(Date updatedDate) {
this.updatedDate = updatedDate;
}
public T getId() {
return id;
}
public void setId(T id) {
this.id = id;
}
}
When the application is started with the update mode for creation the models,
they are created successfully but foreign key Organization does not exist in the Product, another hand the record of Organization can be deleted in the event that it is in the Product as foreign key.
Where is wrong?
How do i fix this problem?
I have 2 classes, TransportOrder and LardiSendedOrder. It's bounded by field innerId, and I just want list all records from LardiSendedOrder table, but got this error.
Error accessing field [private java.lang.Integer com.example.model.LardiSendedOrder.innerId] by reflection for persistent property [com.example.model.LardiSendedOrder#innerId] : 1;
class Transport Order
#Entity
class TransportOrder {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
private String url;
private String source;
private String transport;
private Date start_date;
private Date end_date;
private String start_address;
private String end_address;
private ArrayList<String> phones =new ArrayList<>()
private Integer distance;
private String content;
private String weight;
private String size;
private Boolean fromVendor;
private ArrayList<PaymentType> payment_type = new ArrayList<PaymentType>();
private Double payment;
private String payment_by;
private ArrayList<PaymentEvent> payment_event = new ArrayList<PaymentEvent>();
private Date add_date;
#NotNull
#Column(unique=true)
private Integer hashCode;
LardiSendedOrder getLardiSendedOrder() {
return lardiSendedOrder
}
void setLardiSendedOrder(LardiSendedOrder lardiSendedOrder) {
this.lardiSendedOrder = lardiSendedOrder
}
#OneToOne
#JoinColumn(
/* referencedColumnName = "innerId"*/
referencedColumnName = "innerId"
)
private LardiSendedOrder lardiSendedOrder;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
//another getters and setters omitted
}
class LardiSendedOrder
#Entity
class LardiSendedOrder {
#Id
#GeneratedValue(strategy= GenerationType.AUTO)
private Integer id;
private Integer innerId;
private Integer outerId;
private Date publish_date;
Integer getUserId() {
return userId
}
void setUserId(Integer userId) {
this.userId = userId
}
private Integer userId;
TransportOrder getTransportOrder() {
return transportOrder
}
void setTransportOrder(TransportOrder transportOrder) {
this.transportOrder = transportOrder
}
#OneToOne(
cascade = CascadeType.ALL,
fetch = FetchType.LAZY,
mappedBy = "lardiSendedOrder")
private TransportOrder transportOrder;
Integer getInnerId() {
return innerId
}
void setInnerId(Integer innerId) {
this.innerId = innerId
}
Integer getOuterId() {
return outerId
}
void setOuterId(Integer outerId) {
this.outerId = outerId
}
String getPublish_date() {
return publish_date.format("dd.MM.yyyy HH:mm:ss");;
}
void setPublish_date(Date publish_date) {
this.publish_date = publish_date
}
}
And i just call
ArrayList<LardiSendedOrder> orders = (ArrayList<LardiSendedOrder>) lardiSendedOrderRepository.findAll();
I am facing problem while inserting. I want to save the details in result table without saving the foreign key parameters in parent table.
there are three pojo classes:
#Entity
#Table(name="course")
public class Course implements Serializable{
private static final long serialVersionUID = 1L;
#Id
#Column( name="id")
#GeneratedValue(strategy=GenerationType.AUTO)
private int id;
#Column(name="course_id",nullable = false)
private String course_id;
#Column( name="course_name")
private String course_name;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getCourse_id() {
return course_id;
}
public void setCourse_id(String course_id) {
this.course_id = course_id;
}
public String getCourse_name() {
return course_name;
}
public void setCourse_name(String course_name) {
this.course_name = course_name;
}
**#OneToMany(fetch = FetchType.EAGER, mappedBy = "course")
private Set<Result> result = new HashSet<Result>(0);
public Set<Result> getResult() {
return this.result;
}
public void setResult(Set<Result> result) {
this.result = result;
}**
}
The second class is Student.java
#Entity
#Table(name ="student")
public class Student implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
//Attribute----------------------------------
#Id
#Column(name="id")
#GeneratedValue(strategy=GenerationType.AUTO)
private int id;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
//Attribute----------------------------------
#Column(name="student_id", nullable=false)
private long student_id;
public long getStudent_id() {
return student_id;
}
public void setStudent_id(long student_id) {
this.student_id = student_id;
}
//Attribute----------------------------------
#Column(name="student_name")
private String student_name;
public String getStudent_name() {
return student_name;
}
public void setStudent_name(String student_name) {
this.student_name = student_name;
}
//Attribute----------------------------------
#Column(name="student_contact_number")
private long student_contact_number;
public long getStudent_contact_number() {
return student_contact_number;
}
public void setStudent_contact_number(long student_contact_number) {
this.student_contact_number = student_contact_number;
}
//This is for the foreign key element in the Result.java POJO class
#OneToMany(fetch = FetchType.LAZY,cascade = {CascadeType.ALL}, mappedBy = "student")
private Set<Result> result = new HashSet<Result>(0);
public Set<Result> getResult() {
return this.result;
}
public void setResult(Set<Result> result) {
this.result = result;
}
}
Third is Result.java which contains the foreign keys
#Entity
#Table(name="result")
public class Result implements Serializable{
private static final long serialVersionUID = 1L;
#Id
#Column(name="id")
#GeneratedValue(strategy = GenerationType.AUTO)
private int id;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
#Column(name="semester")
private int semester;
public int getSemester() {
return semester;
}
public void setSemester(int semester) {
this.semester = semester;
}
#Column(name="marks")
private int marks;
public int getMarks() {
return marks;
}
public void setMarks(int marks) {
this.marks = marks;
}
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "student_id", nullable = false)
private Student student;
public Student getStudent() {
return this.student;
}
public void setStudent(Student student_id) {
this.student = student_id;
}
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "course_id", nullable = false)
private Course course;
public Course getCourse() {
return this.course;
}
public void setCourse(Course course) {
this.course = course;
}
}
Now the code I used to insert is like this:
Session session;
Transaction t;
Query query;
Configuration cfg=new Configuration();
cfg.configure("hibernate.cfg.xml");
//#SuppressWarnings("deprecation")
SessionFactory factory=cfg.buildSessionFactory();
session=factory.openSession();
t=session.beginTransaction();
Result result;
Course cs;
Student st;
for(int i=0; i<jsrm.get(0).size(); i++)
{
result=new Result();
cs= new Course();
st=new Student();
cs.setCourse_id(jsrm.get(0).get(i).getcourse_id());
st.setStudent_id(Integer.parseInt(jsrm.get(0).get(i).getstudent_id()));
result.setSemester(Integer.parseInt(jsrm.get(0).get(i).getsemester()));
result.setMarks(Integer.parseInt(jsrm.get(0).get(i).getmarks()));
result.setCourse(cs);
result.setStudent(st);
session.save(result);
}
t.commit();//transaction is committed
session.close();
The error is
org.hibernate.TransientPropertyValueException: Not-null property references a transient value - transient instance must be saved before
current operation: Result.course -> Course
Is there a way to store the data without saving the course and student.
I define the following entities :BaseEntity , magasin and article :
#Entity(name = "magasin")
#Table(name = "magasin")
public class Magasin extends BaseEntity {
private static final long serialVersionUID = 1L;
#Basic
#Size(min=5, max=100, message="The name must be between {min} and {max} characters")
private String name;
#OneToMany(cascade=CascadeType.ALL, mappedBy="magasin")
#Valid
private Set<Article> article;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Set<Article> getArticle() {
return article;
}
public void setArticle(Set<Article> article) {
this.article = article;
}
}
#Entity(name="article")
#Table(name="article")
public class Article extends BaseEntity {
private static final long serialVersionUID = 1L;
#ManyToOne
private Magasin magasin;
#Basic
#Size(min=5, max=100, message="The name must be between {min} and {max} characters")
private String name;
#Basic
private float price;
public Magasin getMagasin() {
return magasin;
}
public void setMagasin(Magasin magasin) {
this.magasin = magasin;
}
public String getName() {
return name;
}
public void setName(String nom) {
this.name = nom;
}
public float getPrice() {
return price;
}
public void setPrice(float price) {
this.price = price;
}
}
#MappedSuperclass
public class BaseEntity {
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
private Integer id;
public void setId(Integer id) {
this.id = id;
}
public Integer getId() {
return id;
}
public boolean isNew() {
return (this.id == null);
}
I try to add a new entity bit it didn't work .No new entity will be inserted .there is no error .How can I modify it in order to add a new entity for article ?
Function from GenericDao
public T add(T entity) {
System.out.println("start");
getHibernateTemplate().save(entity);
System.out.println("end");
return entity;
}
Flex Main
private function submitData(event:Event):void {
var article_ajout=new Article();
article_ajout.name=pop1.art_name.text;
article_ajout.price=parseFloat(pop1.art_prix.text);
article_ajout.magasin=Magasin(iMagasin.selectedItem);
Alert.show("test");
articleService.add(article_ajout);
removeMe(event);
}
I define the following entities :BaseEntity , magasin and article :
#Entity(name = "magasin")
#Table(name = "magasin")
public class Magasin extends BaseEntity {
private static final long serialVersionUID = 1L;
#Basic
#Size(min=5, max=100, message="The name must be between {min} and {max} characters")
private String name;
#OneToMany(cascade=CascadeType.ALL, mappedBy="magasin")
#Valid
private Set<Article> article;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Set<Article> getArticle() {
return article;
}
public void setArticle(Set<Article> article) {
this.article = article;
}
}
#Entity(name="article")
#Table(name="article")
public class Article extends BaseEntity {
private static final long serialVersionUID = 1L;
#ManyToOne
private Magasin magasin;
#Basic
#Size(min=5, max=100, message="The name must be between {min} and {max} characters")
private String name;
#Basic
private float price;
public Magasin getMagasin() {
return magasin;
}
public void setMagasin(Magasin magasin) {
this.magasin = magasin;
}
public String getName() {
return name;
}
public void setName(String nom) {
this.name = nom;
}
public float getPrice() {
return price;
}
public void setPrice(float price) {
this.price = price;
}
}
#MappedSuperclass
public class BaseEntity {
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
private Integer id;
public void setId(Integer id) {
this.id = id;
}
public Integer getId() {
return id;
}
public boolean isNew() {
return (this.id == null);
}
}
How can create a hql query in order to retrieve all Article for a magasin selected ?
I try this
#Override
public List<Article> findArticle(Magasin magasin) {
String query = "From Article m where m.magasin.id = "+magasin.getId();
System.out.print(query);
Session session = getSessionFactory().getCurrentSession();
if((session.createQuery(query).list()!=null) && (session.createQuery(query).list().size()!=0))
return (List<Article>) session.createQuery(query).list();
else
return null;
}
But it returns nothing , always null .How can I resolve it ?
I don't know the type of your magasin id so adapt the code below.
First get the Magasin instance for the id:
Magasin mag = (Magasin)session.get(Magasin.class, id);
Next you can access the articles for the magasin mag via accessor
Set<Article> articles = mag.getArticle();
Try this:
"Select * From Article,Mgasin where Article.mgasin.id = "+magasin.getId();