Is it possible to use HQL for Non-Mapped Entities

Is it possible to use HQL for Non-Mapped Entities - java

After Searching stack overflow I came to this
Can I use hibernate query language for entities not mapped to a table?
But recently I was making a small project where the two entities were not mapped by any Mapped Annotations and still I got the result for the query.
So I am confused as the posts say it is not possible to query on Non-Mapped Entities.
Customer
package com.mayank.bitmesra.pojo;
import java.util.Date;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.PrePersist;
import javax.persistence.PreUpdate;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
#Entity
public class Customer {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private Long id;
private String customerId;
private String name;
private String phoneNumber;
#Temporal(TemporalType.DATE)
private Date dateOfBirth;
#Temporal(TemporalType.DATE)
private Date createdDate;
//for rolling back of Data
//using date as such of now
#Temporal(TemporalType.DATE)
private Date updatedOn;
//for picking up only the data that is most recent
//like a customer can have save with same customer id
//but has different address as his address might have changed up in near future
//will try to handle this in near future
/* #Temporal
private Date lastPickedUpDate;*/
public String getCustomerId() {
return customerId;
}
public void setCustomerId(String customerId) {
this.customerId = customerId;
}
public Date getDateOfBirth() {
return dateOfBirth;
}
public void setDateOfBirth(Date dateOfBirth) {
this.dateOfBirth = dateOfBirth;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPhoneNumber() {
return phoneNumber;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public void setPhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}
#Override
public String toString() {
return "Customer [id=" + id + ", name=" + name + ", phoneNumber=" + phoneNumber + "]";
}
public Date getUpdatedOn() {
return updatedOn;
}
public void setUpdatedOn(Date updatedOn) {
this.updatedOn = updatedOn;
}
#PrePersist
protected void onCreate() {
createdDate = new Date();
}
#PreUpdate
protected void onUpdate() {
updatedOn = new Date();
}
}
OrderDetails
package com.mayank.bitmesra.pojo;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
#Entity
public class OrderDetails {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private long id;
private String customerId;
private String orderId;
private String orderName;
public String getCustomerId() {
return customerId;
}
public void setCustomerId(String customerId) {
this.customerId = customerId;
}
public String getOrderId() {
return orderId;
}
public void setOrderId(String orderId) {
this.orderId = orderId;
}
public String getOrderName() {
return orderName;
}
public void setOrderName(String orderName) {
this.orderName = orderName;
}
}
OrderDetailsDAOImpl
#Repository
#Transactional
public class OrderDetailsDAOImpl implements OrderDetailsDAO{
#PersistenceContext
EntityManager entityManager;
#Override
public List getAllOrderDetails() {
// return entityManager.createQuery("Select order from OrderDetails order ").getResultList();
return entityManager.createQuery("Select customer.name from OrderDetails order inner join Customer customer on order.customerId=customer.customerId").getResultList();
}

I think you are confused . #Entity is the annotation used by HQL to identify the so called mapped entities. Both of the entities are annotated by them.

Related

If two entity parent and child saved at same time which mapped with one to many relationship throw id not found exception of parent class

My relationship like this which is shown in image :
enter image description here
I'm having troubling with insert data in database because of bill id saved little bit late and that time also buybill save simultaneously in database and which want to bill id to save in relationship and throw exception like invoice id not found and only my bill data saved in database and buybill thrwo exception of not found bill id so please help me out.
Thanks,
And one more thing that i include that my postmapping of :
This--->
#PostMapping(value="/customers/{customerId}/bills/{InvoiceNo}/buyBills",produces="application/json",consumes="application/json")
and
This--->
#PostMapping(value="/customers/{customerId}/bills/{InvoiceNo}/bills",produces="application/json",consumes="application/json")
by two $http.post() simultaneously with one angularjs submit button in html.
This is my javascript code of post two http request by angular.js onclick of $scope.purchase function where there i post two url which mapped above URL1 and URL2 with json data and BillData, buyBillFormss.html code :
<script type="text/javascript">
var invoice = angular.module('invoice', []);
invoice.controller('InvoiceController', function($scope,$window,$http){
$scope.purchase = function(){
if(!$scope.myForm.$valid){
console.log("Invalid")
$scope.err = "Invaid Transaction Please Insert valid field or Refresh!!!";
}
if($scope.myForm.$valid){
angular.forEach($scope.invoice.items, function(item){
var Bill = [];
$scope.am = (((item.qty * item.price)+((item.qty * item.price)*item.gst)/100)-item.dis).toFixed(2);
angular.forEach($scope.invoice.items, function (value, key) {
var am = (((value.qty * value.price)+((value.qty * value.price)*value.gst)/100)-value.dis).toFixed(2);
Bill.push({
"proId" : value.proId,
"name" : value.name,
"description" : value.description,
"qty" : value.qty,
"unit" : value.unit,
"price" : value.price,
"dis" : value.dis,
"gst" : value.gst,
"amount" : am
});
});
console.log("Bill ::");
console.log(Bill);
localStorage.setItem("data",JSON.stringify(Bill));
///////////////////////////////////////////////////////
var id = document.getElementById("ids").innerText;
var InvoiceNo = document.getElementById("InvoiceNo").innerText;
var data={
"proId" : item.proId,
"name" : item.name,
"description" : item.description,
"qty" : item.qty,
"unit" : item.unit,
"price" : item.price,
"dis" : item.dis,
"gst" : item.gst,
"amount" : $scope.am
};
console.log("Data ::");
console.log(data);
$scope.CustomerId = id;
$scope.InvoiceNo = InvoiceNo;
var URL1 = "http://localhost:8083/cust/customers/"+$scope.CustomerId+"/bills/"+$scope.InvoiceNo+"/buyBills";
$http.post(URL1, data);
});
//angular.forEach($scope.invoice.items, function(item){
var id = document.getElementById("ids").innerText;
var name = document.getElementById("name").innerText;
var InvoiceNo = document.getElementById("InvoiceNo").innerText;
var address = document.getElementById("address").innerText;
var mobileNo = document.getElementById("mobileNo").innerText;
var note = document.getElementById("n").value;
var InterestRate = document.getElementById("i").value;
var CredibilityStatus = "very Good";
var guarantorName = document.getElementById("g").value;
var BillData={
"invoiceNo" : InvoiceNo,
"name" : name,
"address" : address,
"mobileNo" : mobileNo,
"totalGSTAmount" : ($scope.GST()).toFixed(2),
"totalDiscountAmount" : $scope.Dis(),
"guarantorName" : guarantorName,
"totalAmount" : ($scope.TotalAmount()).toFixed(2),
"paidAmount" : ($scope.PaidAmount()).toFixed(2),
"dueAmount" : ($scope.DueAmount()).toFixed(2),
"status" : $scope.Status(),
"interestRate" : InterestRate,
"credibilityStatus" : CredibilityStatus,
"note" : note
};
console.log("BillData ::");
console.log(BillData);
$scope.CustomerId = id;
$scope.InvoiceNo = InvoiceNo;
var URL2 = "http://localhost:8083/cust/customers/"+$scope.CustomerId+"/bills/"+$scope.InvoiceNo+"/bills";
$http.post(URL2, BillData);
localStorage.setItem("dataAct",JSON.stringify(BillData));
//});
$window.location.href = "/Bill"
}
}
});
</script>
My code is here :
This is my customer.java entity :
package com.alpha.demo.model;
import java.io.Serializable;
import java.util.Date;
import java.util.Set;
import java.util.UUID;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import org.hibernate.annotations.CreationTimestamp;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
#Entity
#Table(name = "customers")
#JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
public class Customer implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
#Column(name = "uniqueId", updatable = false, nullable = false)
private UUID uniqueId = UUID.randomUUID();
#Column(columnDefinition = "TEXT")
private String photos;
private String fullName;
private String aadhaarNo;
private String guarantor;
private String address;
private String mobileNo;
private String note;
#CreationTimestamp
#Temporal(TemporalType.TIMESTAMP)
#Column(name = "create_date",updatable=false)
private Date createDate;
#OneToMany(mappedBy = "customer", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
private Set<Bill> Bill;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public UUID getUniqueId() {
return uniqueId;
}
public void setUniqueId(UUID uniqueId) {
this.uniqueId = uniqueId;
}
public String getFullName() {
return fullName;
}
public void setFullName(String fullName) {
this.fullName = fullName;
}
public String getPhotos() {
return photos;
}
public void setPhotos(String photos) {
this.photos = photos;
}
public String getAadhaarNo() {
return aadhaarNo;
}
public void setAadhaarNo(String aadhaarNo) {
this.aadhaarNo = aadhaarNo;
}
public String getGuarantor() {
return guarantor;
}
public void setGuarantor(String guarantor) {
this.guarantor = guarantor;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getMobileNo() {
return mobileNo;
}
public void setMobileNo(String mobileNo) {
this.mobileNo = mobileNo;
}
public String getNote() {
return note;
}
public void setNote(String note) {
this.note = note;
}
public Date getCreateDate() {
return createDate;
}
public void setCreateDate(Date createDate) {
this.createDate = createDate;
}
public static long getSerialversionuid() {
return serialVersionUID;
}
public Set<Bill> getBill() {
return Bill;
}
public void setBill(Set<Bill> bill) {
Bill = bill;
}
public Customer(String photos, String fullName, String aadhaarNo, String guarantor, String address, String mobileNo,
String note, Date createDate) {
super();
this.photos = photos;
this.fullName = fullName;
this.aadhaarNo = aadhaarNo;
this.guarantor = guarantor;
this.address = address;
this.mobileNo = mobileNo;
this.note = note;
this.createDate = createDate;
}
public Customer() {
}
}
This is my Bill.java entity :
package com.alpha.demo.model;
import java.io.Serializable;
import java.util.Date;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import org.hibernate.annotations.CreationTimestamp;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
#Entity
#Table(name = "bills")
#JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
public class Bill implements Serializable{
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long invoiceNo;
private String guarantorName;
private String TotalGSTAmount;
private String TotalDiscountAmount;
private String TotalAmount;
private String PaidAmount;
private String DueAmount;
private String InterestRate;
private String TotalInterestAmount;
private String Status;
private String CredibilityStatus;
private String Note;
#CreationTimestamp
#Temporal(TemporalType.TIMESTAMP)
#Column(name = "billing_date",updatable=false)
private Date BillingDate;
#ManyToOne(fetch = FetchType.LAZY, optional = false)
#JoinColumn(name = "customer_id", nullable = false)
#JsonIgnore
private Customer customer;
#OneToMany(mappedBy = "bill", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
private Set<BuyBill> BuyBill;
public Bill() {
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Long getInvoiceNo() {
return invoiceNo;
}
public void setInvoiceNo(Long invoiceNo) {
this.invoiceNo = invoiceNo;
}
public String getGuarantorName() {
return guarantorName;
}
public void setGuarantorName(String guarantorName) {
this.guarantorName = guarantorName;
}
public String getTotalAmount() {
return TotalAmount;
}
public void setTotalAmount(String totalAmount) {
TotalAmount = totalAmount;
}
public String getPaidAmount() {
return PaidAmount;
}
public void setPaidAmount(String paidAmount) {
PaidAmount = paidAmount;
}
public String getDueAmount() {
return DueAmount;
}
public void setDueAmount(String dueAmount) {
DueAmount = dueAmount;
}
public String getInterestRate() {
return InterestRate;
}
public void setInterestRate(String interestRate) {
InterestRate = interestRate;
}
public String getTotalInterestAmount() {
return TotalInterestAmount;
}
public void setTotalInterestAmount(String totalInterestAmount) {
TotalInterestAmount = totalInterestAmount;
}
public String getStatus() {
return Status;
}
public void setStatus(String status) {
Status = status;
}
public String getTotalGSTAmount() {
return TotalGSTAmount;
}
public void setTotalGSTAmount(String totalGSTAmount) {
TotalGSTAmount = totalGSTAmount;
}
public String getTotalDiscountAmount() {
return TotalDiscountAmount;
}
public void setTotalDiscountAmount(String totalDiscountAmount) {
TotalDiscountAmount = totalDiscountAmount;
}
public Date getBillingDate() {
return BillingDate;
}
public void setBillingDate(Date billingDate) {
BillingDate = billingDate;
}
public Customer getCustomer() {
return customer;
}
public void setCustomer(Customer customer) {
this.customer = customer;
}
public Set<BuyBill> getBuyBill() {
return BuyBill;
}
public void setBuyBill(Set<BuyBill> buyBill) {
BuyBill = buyBill;
}
public static long getSerialversionuid() {
return serialVersionUID;
}
public String getCredibilityStatus() {
return CredibilityStatus;
}
public void setCredibilityStatus(String credibilityStatus) {
CredibilityStatus = credibilityStatus;
}
public String getNote() {
return Note;
}
public void setNote(String note) {
Note = note;
}
public Bill(Long id, Long invoiceNo, String guarantorName, String totalGSTAmount, String totalDiscountAmount,
String totalAmount, String paidAmount, String dueAmount, String interestRate, String totalInterestAmount,
String status, String credibilityStatus, String note, Date billingDate, Customer customer,
Set<com.alpha.demo.model.BuyBill> buyBill) {
super();
this.id = id;
this.invoiceNo = invoiceNo;
this.guarantorName = guarantorName;
TotalGSTAmount = totalGSTAmount;
TotalDiscountAmount = totalDiscountAmount;
TotalAmount = totalAmount;
PaidAmount = paidAmount;
DueAmount = dueAmount;
InterestRate = interestRate;
TotalInterestAmount = totalInterestAmount;
Status = status;
CredibilityStatus = credibilityStatus;
Note = note;
BillingDate = billingDate;
this.customer = customer;
BuyBill = buyBill;
}
#Override
public String toString() {
return "Bill [id=" + id + ", invoiceNo=" + invoiceNo + ", guarantorName=" + guarantorName + ", TotalGSTAmount="
+ TotalGSTAmount + ", TotalDiscountAmount=" + TotalDiscountAmount + ", TotalAmount=" + TotalAmount
+ ", PaidAmount=" + PaidAmount + ", DueAmount=" + DueAmount + ", InterestRate=" + InterestRate
+ ", TotalInterestAmount=" + TotalInterestAmount + ", Status=" + Status + ", CredibilityStatus="
+ CredibilityStatus + ", Note=" + Note + ", BillingDate=" + BillingDate + ", customer=" + customer
+ ", BuyBill=" + BuyBill + "]";
}
}
This is my BuyBill entity :
package com.alpha.demo.model;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
import org.hibernate.annotations.NotFound;
import org.hibernate.annotations.NotFoundAction;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
#Entity
#Table(name = "buyBills")
#JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
public class BuyBill implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private Long proId;
private String name;
private String description;
private String qty;
private String unit;
private String price;
private String dis;
private String gst;
private String amount;
#ManyToOne(fetch = FetchType.LAZY, optional = false)
#JoinColumn(name = "bill_id", nullable = false)
#JsonIgnore
private Bill bill;
public BuyBill(Long id, Long proId, String name, String description, String qty, String unit, String price,
String dis, String gst, String amount, Bill bill) {
super();
this.id = id;
this.proId = proId;
this.name = name;
this.description = description;
this.qty = qty;
this.unit = unit;
this.price = price;
this.dis = dis;
this.gst = gst;
this.amount = amount;
this.bill = bill;
}
public BuyBill() {
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getQty() {
return qty;
}
public void setQty(String qty) {
this.qty = qty;
}
public String getUnit() {
return unit;
}
public void setUnit(String unit) {
this.unit = unit;
}
public String getPrice() {
return price;
}
public void setPrice(String price) {
this.price = price;
}
public String getDis() {
return dis;
}
public void setDis(String dis) {
this.dis = dis;
}
public String getGst() {
return gst;
}
public void setGst(String gst) {
this.gst = gst;
}
public String getAmount() {
return amount;
}
public void setAmount(String amount) {
this.amount = amount;
}
public Bill getBill() {
return bill;
}
public void setBill(Bill bill) {
this.bill = bill;
}
public static long getSerialversionuid() {
return serialVersionUID;
}
public Long getProId() {
return proId;
}
public void setProId(Long proId) {
this.proId = proId;
}
}
This is my JPA Repositories of bill :
package com.alpha.demo.Repository;
import java.util.List;
import java.util.Optional;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import com.alpha.demo.model.Bill;
public interface BillRepository extends JpaRepository<Bill, Long>{
List<Bill> findByCustomerId(Long custoemrId);
#Query(value = "SELECT MAX(id) FROM bills", nativeQuery = true)
Long getNextSeriesId();
Optional <Bill> findByinvoiceNo(Long invoiceNo);
}
This is my bill Controller where i perform crud operations :
package com.alpha.demo.controller;
import javax.validation.Valid;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.ModelAndView;
import com.alpha.demo.Repository.BillRepository;
import com.alpha.demo.Repository.BuyBillRepository;
import com.alpha.demo.Repository.CustomerRepository;
import com.alpha.demo.exception.NotFoundException;
import com.alpha.demo.model.Bill;
import com.alpha.demo.model.BuyBill;
import com.alpha.demo.model.Customer;
#RestController
#RequestMapping("/cust")
public class BillController {
#Autowired
private BillRepository BillRepository;
#Autowired
private BuyBillRepository buyBillRepository;
#Autowired
private CustomerRepository customerRepository;
#GetMapping("/customersBuyBill/{id}")
public ModelAndView showUpdateForm(#PathVariable("id") long id, #ModelAttribute #Valid #RequestBody Bill bill,
#ModelAttribute #Valid #RequestBody BuyBill buyBill, Model model) {
ModelAndView mv = new ModelAndView("buyBillFormss.html");
Customer ct = customerRepository.findById(id)
.orElseThrow(() -> new IllegalArgumentException("Invalid user Id:" + id));
model.addAttribute("ct", ct);
model.addAttribute("bill", bill);
model.addAttribute("buyBill", buyBill);
//BillRepository.getNextSeriesId();
if(BillRepository.getNextSeriesId()==null) {
Long InvoiceNo = (long) 1;
model.addAttribute("invoiceNo", InvoiceNo);
}
if(BillRepository.getNextSeriesId()!=null) {
Long InvoiceNo = BillRepository.getNextSeriesId() + 1;
model.addAttribute("invoiceNo", InvoiceNo);
}
return mv;
}
#PostMapping(value="/customers/{customerId}/bills/{invoiceNo}/bills",produces="application/json",consumes="application/json")
#ResponseBody
public ModelAndView addBillRequest(#PathVariable Long customerId, #PathVariable Long invoiceNo,#Valid #RequestBody Bill bill) {
return customerRepository.findById(customerId) .map(customer -> {
bill.setCustomer(customer);
BillRepository.save(bill);
ModelAndView mv = new ModelAndView("redirect:/cust/customersBuyBill/{customerId}");
return mv;
}).orElseThrow(() -> new NotFoundException("Customer not found!"));
}
#PostMapping(value="/customers/{customerId}/bills/{invoiceNo}/buyBills",produces="application/json",consumes="application/json")
#ResponseBody
public ModelAndView addBuyBillRequest(#PathVariable Long customerId, #PathVariable Long invoiceNo,#Valid #RequestBody BuyBill buyBill){
System.out.println(invoiceNo);
System.out.println(BillRepository.findByinvoiceNo(invoiceNo));
return BillRepository.findByinvoiceNo(invoiceNo).map(bills -> {
buyBill.setBill(bills);
buyBillRepository.save(buyBill);
ModelAndView mv = new ModelAndView("redirect:/cust/customersBuyBill/{customerId}"); return mv;
}).orElseThrow(() -> new NotFoundException("Invoice No not found!"));
}
}
Throw this exception :
5
Hibernate: select bill0_.id as id1_0_, bill0_.billing_date as billing_2_0_, bill0_.credibility_status as credibil3_0_, bill0_.due_amount as due_amou4_0_, bill0_.interest_rate as interest5_0_, bill0_.note as note6_0_, bill0_.paid_amount as paid_amo7_0_, bill0_.status as status8_0_, bill0_.total_amount as total_am9_0_, bill0_.total_discount_amount as total_d10_0_, bill0_.totalgstamount as totalgs11_0_, bill0_.total_interest_amount as total_i12_0_, bill0_.customer_id as custome15_0_, bill0_.guarantor_name as guarant13_0_, bill0_.invoice_no as invoice14_0_ from bills bill0_ where bill0_.invoice_no=?
Optional.empty
Hibernate: select bill0_.id as id1_0_, bill0_.billing_date as billing_2_0_, bill0_.credibility_status as credibil3_0_, bill0_.due_amount as due_amou4_0_, bill0_.interest_rate as interest5_0_, bill0_.note as note6_0_, bill0_.paid_amount as paid_amo7_0_, bill0_.status as status8_0_, bill0_.total_amount as total_am9_0_, bill0_.total_discount_amount as total_d10_0_, bill0_.totalgstamount as totalgs11_0_, bill0_.total_interest_amount as total_i12_0_, bill0_.customer_id as custome15_0_, bill0_.guarantor_name as guarant13_0_, bill0_.invoice_no as invoice14_0_ from bills bill0_ where bill0_.invoice_no=?
2021-01-27 16:58:05.945 WARN 7652 --- [nio-8083-exec-9] .w.s.m.a.ResponseStatusExceptionResolver : Resolved [com.alpha.demo.exception.NotFoundException: Invoice No not found!]
Hibernate: select customer0_.id as id1_3_0_, customer0_.aadhaar_no as aadhaar_2_3_0_, customer0_.address as address3_3_0_, customer0_.create_date as create_d4_3_0_, customer0_.full_name as full_nam5_3_0_, customer0_.guarantor as guaranto6_3_0_, customer0_.mobile_no as mobile_n7_3_0_, customer0_.note as note8_3_0_, customer0_.photos as photos9_3_0_, customer0_.unique_id as unique_10_3_0_ from customers customer0_ where customer0_.id=?
Hibernate: insert into bills (billing_date, credibility_status, due_amount, interest_rate, note, paid_amount, status, total_amount, total_discount_amount, totalgstamount, total_interest_amount, customer_id, guarantor_name, invoice_no) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
Main problem ::
In Brief Bill id in "BillRepository.findById(InvoiceNo)" is empty when both bill and buybill save simultaneously.

I notice that in Bill you have #generatedValue on invoiceId. I don't think you can use #generatedValue on a non #Id field. See this post.

I assume your exception occurs at this point?
// return BillRepository.findById(InvoiceNo).map(bills -> {
// buyBill.setBill(bills);
// buyBillRepository.save(buyBill);
// ModelAndView mv = new ModelAndView("redirect:/cust/customersBuyBill/{customerId}"); return mv;
// }).orElseThrow(() -> new NotFoundException("Invoice No not found!"));
If so then you try to find a Bill by id (BillRepository.findById) but providing a invoiceNo instead of the concrete id
repository.findById refers to the #Id annotated column. In your case:
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
Therefore you need to use / implement the method findByInvoiceNo to get your concrete Bill by the provided invoiceNo instead of findById
Edit
Your Bill repository shall contain this method
public interface BillRepository extends JpaRepository<Bill, Long> {
Bill findByInvoiceNo(String invoiceNo);
}
and then
return BillRepository.findB<InvoiceNo(InvoiceNo).map(bills -> {
buyBill.setBill(bills);
buyBillRepository.save(buyBill);
ModelAndView mv = new ModelAndView("redirect:/cust/customersBuyBill/{customerId}"); return mv;
}).orElseThrow(() -> new NotFoundException("Invoice No not found!"));
Edit #2
#PostMapping(value="/customers/{customerId}/bills/{invoiceNo}/buyBills",produces="application/json",consumes="application/json")
#ResponseBody
public ModelAndView addBuyBillRequest(#PathVariable Long customerId, #PathVariable Long invoiceNo,#Valid #RequestBody BuyBill buyBill){
System.out.println(invoiceNo);
System.out.println(BillRepository.findByinvoiceNo(invoiceNo));
return BillRepository.findByinvoiceNo(invoiceNo).map(bills -> {
buyBill.setBill(bills);
buyBillRepository.save(buyBill);
ModelAndView mv = new ModelAndView("redirect:/cust/customersBuyBill/{customerId}"); return mv;
}).orElseThrow(() -> new NotFoundException("Invoice No not found!"));
}
Shouldn't it be
return BillRepository.findByinvoiceNo(invoiceNo).map(bills -> {
bills.addBuyBill(buyBill);
billsRepository.save(bills);
and in the Bill class:
public class Bill implements Serializable {
public void addBuyBill(BuyBill buyBill) {
this.BuyBill.add(buyBill);
buyBill.setBill(this)
}
}
Same goes for this part
return customerRepository.findById(customerId) .map(customer -> {
bill.setCustomer(customer);
BillRepository.save(bill);
ModelAndView mv = new ModelAndView("redirect:/cust/customersBuyBill/{customerId}");
return mv;
}).orElseThrow(() -> new NotFoundException("Customer not found!"));
}
As customer holds none or more bills you need to add a synchronization method like before:
return customerRepository.findById(customerId) .map(customer -> {
customer.addBill(bill);
CustomerRepository.save(customer);
ModelAndView mv = new ModelAndView("redirect:/cust/customersBuyBill/{customerId}");
return mv;
}).orElseThrow(() -> new NotFoundException("Customer not found!"));
}
And in customer
public class Customer implements Serializable {
public void addBill(Bill newBill) {
this.Bill.add(newBill);
newBill.setCustomer(this)
}
}
As you are using a bi-directional association you should keep them synchronized. Otherwise the state transitions of the entities may not work.
Sorry for the long term investigation. But the code makes it hard to identify.
You should definitely think about some refactoring. But this would go beyond the scope of this question.

New entity required in an existing ManyToMany

I have two entities: Project.java and Employee.java that are ManyToMany mapped with each other (internally using the Hibernate generated table emp_project_mapping).
Now, I have a new one: Role.java that is to be mapped with above mentioned entities such that an employee in a project can have only one role. Also, this mapping should use that same mapping_table emp_project_mapping.
I have no idea how to achieve this scenario. Please help me out.
Employee.java
package com.ayush.springbootApp.bootCrudApi.model;
import java.util.Date;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinTable;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToMany;
import javax.persistence.OneToOne;
import javax.persistence.Table;
import com.ayush.springbootApp.bootCrudApi.model.Project;
import com.ayush.springbootApp.bootCrudApi.model.Workstation;
#Entity
#Table (name="employee_table")
//model class for Employee
public class Employee {
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
#Column
private Integer id;
#Column
private String name;
#Column
private String gender;
#Column
private String department;
#Column
private String designation;
#Column
private Date dob;
#Column(name="empcode",nullable=false,unique=true)
private String empCode;
#OneToOne(mappedBy="emp")
private Workstation workStation;
#ManyToMany
#JoinTable(name="emp_project_mapping",joinColumns=#JoinColumn(name="emp_id"),inverseJoinColumns=#JoinColumn(name="project_id"))
private Set<Project> prj=new HashSet<Project>();
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public String getDepartment() {
return department;
}
public void setDepartment(String department) {
this.department = department;
}
public String getDesignation() {
return designation;
}
public void setDesignation(String designation) {
this.designation = designation;
}
public Date getDob() {
return dob;
}
public void setDob(Date dob) {
this.dob = dob;
}
public String getEmpCode() {
return empCode;
}
public void setEmpCode(String empCode) {
this.empCode = empCode;
}
public Set<Project> getProject()
{
return this.prj;
}
public void setProject(Set<Project> prj)
{
this.prj=prj;
}
#Override
public String toString() {
return "Employee [id=" + id + ", code="+ empCode + ", name=" + name + ", gender=" + gender + ", department=" + department
+ ", designation=" + designation + ", dob=" + dob + "]";
}
}
Project.java
package com.ayush.springbootApp.bootCrudApi.model;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.ManyToMany;
import javax.persistence.Table;
import com.ayush.springbootApp.bootCrudApi.model.Employee;
#Entity
#Table(name="projects_table")
public class Project{
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
#Column
private Integer id;
#Column(nullable=false)
private String oea_number;
#Column(nullable=false)
private String project_name;
#Column
private String client_name;
#Column
private String origin_country;
#Column(nullable=false)
private Integer po_amount;
#Column
private int project_active;
#ManyToMany(mappedBy="prj")
private Set<Employee> emp=new HashSet<Employee>();
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getOea_number() {
return oea_number;
}
public void setOea_number(String oea_number) {
this.oea_number = oea_number;
}
public String getProject_name() {
return project_name;
}
public void setProject_name(String project_name) {
this.project_name = project_name;
}
public String getClient_name() {
return client_name;
}
public void setClient_name(String client_name) {
this.client_name = client_name;
}
public String getOrigin_country() {
return origin_country;
}
public void setOrigin_country(String origin_country) {
this.origin_country = origin_country;
}
public Integer getPo_amount() {
return po_amount;
}
public void setPo_amount(Integer po_amount) {
this.po_amount = po_amount;
}
public int getProject_active()
{
return this.project_active;
}
public void setProject_active(int project_active)
{
this.project_active=project_active;
}
public Set<Employee> getEmployee()
{
return this.emp;
}
public void setEmployee(Set<Employee> emp)
{
this.emp=emp;
}
#Override
public String toString() {
return "Project [id=" + id + ", oea_number=" + oea_number + ", project_name=" + project_name + ", client_name="
+ client_name + ", origin_country=" + origin_country + ", po_amount=" + po_amount + "]";
}
}
Role.java
package com.ayush.springbootApp.bootCrudApi.model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.OneToOne;
import javax.persistence.Table;
#Entity
#Table(name="Employee_roles")
public class Role
{
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
private Integer id;
#Column(name="description",nullable=false)
private String desc;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
}
emp_project_mapping table

How to pass data from one html form to multiple tables using spring boot

I have coded three classes (User, UserCredential, Address) where I want to store data into tables using mapping. I am using JSON to store data into tables.
When I store data, data are stored in all tables but in user id it shows 1, in UserCredential id it shows 3 and in Address id it shows 2 while in first entry all id should be 1.
classes are
package com.spring.demo.model;
import java.util.Date;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.Lob;
import javax.persistence.OneToOne;
import javax.persistence.Table;
import javax.persistence.Transient;
#Entity
#Table(name="user")
public class User {
#Id
#Column(name="user_id")
#GeneratedValue(strategy=GenerationType.AUTO)
private int id;
private String fName;
private String lName;
#Column(unique=true,nullable=true)
private String email;
#Column(unique=true,nullable=true)
private long mobile;
private Date dob;
#Lob
private byte[] image;
#Transient
private String base64Image;
#OneToOne(cascade=CascadeType.ALL,fetch =FetchType.EAGER)
#JoinColumn(name="userCredential_id")
private UserCredential userCredential;
#OneToOne(cascade=CascadeType.ALL,fetch =FetchType.EAGER)
#JoinColumn(name="add_id")
private Address address;
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getfName() {
return fName;
}
public void setfName(String fName) {
this.fName = fName;
}
public String getlName() {
return lName;
}
public void setlName(String lName) {
this.lName = lName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public long getMobile() {
return mobile;
}
public void setMobile(long mobile) {
this.mobile = mobile;
}
public Date getDob() {
return dob;
}
public void setDob(Date dob) {
this.dob = dob;
}
public byte[] getImage() {
return image;
}
public void setImage(byte[] image) {
this.image = image;
}
public UserCredential getUserCredential() {
return userCredential;
}
public void setUserCredential(UserCredential userCredential) {
this.userCreenter code heredential = userCredential;
}
}
UserCredential.java
package com.spring.demo.model;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToOne;
import com.fasterxml.jackson.annotation.JsonIgnore;
#Entity
public class UserCredential {
#Id
#Column(name="credential_id")
#GeneratedValue(strategy=GenerationType.AUTO)
private int id;
#Column(unique=true,nullable=true)
private String username;
private String password;
private String cnfrmpassword;
#JsonIgnore
#OneToOne(cascade=CascadeType.ALL)
#JoinColumn(name="user_id")
private User user;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getCnfrmpassword() {
return cnfrmpassword;
}
public void setCnfrmpassword(String cnfrmpassword) {
this.cnfrmpassword = cnfrmpassword;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
}
Address.java
package com.spring.demo.model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
#Entity
#Table(name="address")
public class Address {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
#Column(name="add_id")
private int id;
#Column(name="city")
private String city;
#Column(name="state")
private String state;
#Column(name="house_no")
private String h_no;
#ManyToOne
#JoinColumn(name="user_id", nullable=true)
private User user;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
public String getH_no() {
return h_no;
}
public void setH_no(String h_no) {
this.h_no = h_no;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
}
i really don't understand how to overcome this problem.
JSON format to store data
{
"fName":"suresh kumst",
"lName":"dingh",
"mobile":4595498366,
"email":"ksuraj1sd00#gmail.com",
"dob":"2012-04-23T18:25:43.511Z",
"address":{
"city":"noida",
"state":"up",
"h_no":"123"
},
"userCredential":{
"username":"ksuraj1asd002",
"password":"12345",
"cnfrmpassword":"12345"
}
}
and the response with different id while they should be 1 in first entry and user id should have value
{
"id": 1,
"fName": "suresh kumst",
"lName": "dingh",
"email": "ksuraj1sd00#gmail.com",
"mobile": 4595498366,
"dob": "2012-04-23T18:25:43.511+0000",
"image": null,
"userCredential": {
"id": 3,
"username": "ksuraj1asd002",
"password": "12345",
"cnfrmpassword": "12345"
},
"address": {
"id": 2,
"city": "noida",
"state": "up",
"h_no": "123",
"user": null
}
}

Here, you are using #GeneratedValue(strategy=GenerationType.AUTO).
Some DB's will use a common sequence to generate and assign the sequence no's. Hibernate will create a table hibernate_sequence and all the entity tables will refer to this table to get the next sequence no. So, the primary keys will be scattered among the entities.
To have the primary key start from 1 for each entity, use #GeneratedValue(strategy=GenerationType.IDENTITY) with each entity.

When you use #GeneratedValue(strategy=GenerationType.AUTO) the underlying ORM framework will use either identity column, sequence or table, depending of the underlying DB. In your case, I guess it is using a sequence (a single sequence for generating IDs for all the tables). If that is the case, in order to achieve that each table IDs are independent from other tables, you'll have to give different sequence name to each entity.
If you're using Hibernate, consider using #GenericGenerator. Example from other SO answer:
#GenericGenerator(
name = "wikiSequenceGenerator",
strategy = "org.hibernate.id.enhanced.SequenceStyleGenerator",
parameters = {
#Parameter(name = "sequence_name", value = "WIKI_SEQUENCE"),
#Parameter(name = "initial_value", value = "1000"),
#Parameter(name = "increment_size", value = "1")
}
)
#Id
#GeneratedValue(generator = "wikiSequenceGenerator")

Kindly use DB sequence so that you have better control of ID generated, Here I'm just sharing sample of one assuming back end DB is Oracle/mysql
#Id
#GeneratedValue(strategy=GenerationType.AUTO, generator = "employee_sequence")
#SequenceGenerator(name = "employee_sequence", sequenceName = "EMP_SN")
private Long empNo;
Here EMP_SN is DB Sequence.
Hope this will solve your problem.

Hibernate - Custom Id Generation

I am persisting entity to mysql database. my requirement is to store id as BR01 , BR02 ,... etc. instead of storing as 1,2,.. etc.
how can i store id as BR01,BR02,.. etc?
I know sequence is not supported in mysql database.
my entity class is as follows :
package com.kabira.hrm.model;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.TableGenerator;
#Entity
#Table(name="branch")
public class Branch
{
private Long id;
private String country;
private String state;
private String city;
private String address;
private String phoneNumber;
#Id
#GeneratedValue
public Long getId()
{
return id;
}
public void setId(Long id)
{
this.id = id;
}
public String getCountry()
{
return country;
}
public void setCountry(String country)
{
this.country = country;
}
public String getState()
{
return state;
}
public void setState(String state)
{
this.state = state;
}
public String getCity()
{
return city;
}
public void setCity(String city)
{
this.city = city;
}
public String getAddress()
{
return address;
}
public void setAddress(String address)
{
this.address = address;
}
public String getPhoneNumber()
{
return phoneNumber;
}
public void setPhoneNumber(String phoneNumber)
{
this.phoneNumber = phoneNumber;
}
#Override
public String toString()
{
return "Branch [id=" + id + "]";
}
}

You can extend org.hibernate.id.enhanced.SequenceStyleGenerator and use it with annotations #GenericGenerator.

You may want to check out a solution like this. Hibernate: How specify custom sequence generator class name using annotations? This way you make your own key generator.

Write custom generator class and put the logic there to fetch max id from db and you would parse number from that id and convert that number into an integer and make increment to that number and again concat with your required prefix and return concatenated value.
write this logic here
import org.hibernate.id.IdentifierGenerator;
public class MyGenerator implements IdentifierGenerator {#
Override
public Serializable generate(SessionImplementor session, Object object){
// your logic comes here.
}
}

Getting HTTP Error 500 while mapping JAXB classes

I'm just learning to develop a REST application using JAXB and JPA. I'm stuck in weird problem and I have no clue what to search for.
I have these two classes:
package clinic.model;
import java.io.Serializable;
import javax.persistence.*;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlList;
import javax.xml.bind.annotation.XmlRootElement;
import org.eclipse.persistence.oxm.annotations.XmlInverseReference;
import java.math.BigDecimal;
import java.util.Date;
import java.util.List;
/**
* The persistent class for the patients database table.
*
*/
#Entity
#Table(name="patients")
#NamedQuery(name="Patient.findAll", query="SELECT p FROM Patient p")
#XmlRootElement
public class Patient implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private Integer id;
private String address;
private String area;
#Temporal(TemporalType.DATE)
private Date dob;
private BigDecimal mobile;
private String name;
private String sex;
//bi-directional many-to-one association to Prescription
#OneToMany(mappedBy="patient")
private List<Prescription> prescriptions;
public Patient() {
}
public Integer getId() {
return this.id;
}
public void setId(Integer id) {
this.id = id;
}
public String getAddress() {
return this.address;
}
public void setAddress(String address) {
this.address = address;
}
public String getArea() {
return this.area;
}
public void setArea(String area) {
this.area = area;
}
public Date getDob() {
return this.dob;
}
public void setDob(Date dob) {
this.dob = dob;
}
public BigDecimal getMobile() {
return this.mobile;
}
public void setMobile(BigDecimal mobile) {
this.mobile = mobile;
}
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return this.sex;
}
public void setSex(String sex) {
this.sex = sex;
}
#XmlList
public List<Prescription> getPrescriptions() {
return this.prescriptions;
}
public void setPrescriptions(List<Prescription> prescriptions) {
this.prescriptions = prescriptions;
}
public Prescription addPrescription(Prescription prescription) {
getPrescriptions().add(prescription);
prescription.setPatient(this);
return prescription;
}
public Prescription removePrescription(Prescription prescription) {
getPrescriptions().remove(prescription);
prescription.setPatient(null);
return prescription;
}
}
And
package clinic.model;
import java.io.Serializable;
import javax.persistence.*;
import org.eclipse.persistence.oxm.annotations.XmlInverseReference;
import java.math.BigDecimal;
import java.util.Date;
import java.util.List;
/**
* The persistent class for the prescriptions database table.
*
*/
#Entity
#Table(name="prescriptions")
#NamedQuery(name="Prescription.findAll", query="SELECT p FROM Prescription p")
public class Prescription implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private Integer id;
#Temporal(TemporalType.DATE)
private Date date;
private BigDecimal fee;
#Temporal(TemporalType.DATE)
private Date followup;
private String treatment;
//bi-directional many-to-one association to Patient
#ManyToOne(fetch=FetchType.LAZY)
private Patient patient;
//bi-directional many-to-many association to Diagnosis
#ManyToMany
#JoinTable(
name="prescriptions_diagnoses"
, joinColumns={
#JoinColumn(name="pid")
}
, inverseJoinColumns={
#JoinColumn(name="did")
}
)
private List<Diagnosis> diagnoses;
//bi-directional many-to-one association to PrescriptionDrug
#OneToMany(mappedBy="prescription")
private List<PrescriptionDrug> prescriptionsDrugs;
//bi-directional many-to-many association to Vaccine
#ManyToMany(mappedBy="prescriptions")
private List<Vaccine> vaccines;
public Prescription() {
}
public Integer getId() {
return this.id;
}
public void setId(Integer id) {
this.id = id;
}
public Date getDate() {
return this.date;
}
public void setDate(Date date) {
this.date = date;
}
public BigDecimal getFee() {
return this.fee;
}
public void setFee(BigDecimal fee) {
this.fee = fee;
}
public Date getFollowup() {
return this.followup;
}
public void setFollowup(Date followup) {
this.followup = followup;
}
public String getTreatment() {
return this.treatment;
}
public void setTreatment(String treatment) {
this.treatment = treatment;
}
public Patient getPatient() {
return this.patient;
}
public void setPatient(Patient patient) {
this.patient = patient;
}
public List<Diagnosis> getDiagnoses() {
return this.diagnoses;
}
public void setDiagnoses(List<Diagnosis> diagnoses) {
this.diagnoses = diagnoses;
}
public List<PrescriptionDrug> getPrescriptionsDrugs() {
return this.prescriptionsDrugs;
}
public void setPrescriptionsDrugs(List<PrescriptionDrug> prescriptionsDrugs) {
this.prescriptionsDrugs = prescriptionsDrugs;
}
public PrescriptionDrug addPrescriptionsDrug(PrescriptionDrug prescriptionsDrug) {
getPrescriptionsDrugs().add(prescriptionsDrug);
prescriptionsDrug.setPrescription(this);
return prescriptionsDrug;
}
public PrescriptionDrug removePrescriptionsDrug(PrescriptionDrug prescriptionsDrug) {
getPrescriptionsDrugs().remove(prescriptionsDrug);
prescriptionsDrug.setPrescription(null);
return prescriptionsDrug;
}
public List<Vaccine> getVaccines() {
return this.vaccines;
}
public void setVaccines(List<Vaccine> vaccines) {
this.vaccines = vaccines;
}
}
When I have a patient entry in the database, the service is able to map entities into XML/JSON. But when I add an associating prescription entry, Glassfish throws error 500.
What could be the problem?
I'm using GlassFish 4.0 and EclipseLink 2.5.1. IDE is Eclipse Luna.

Solution found at http://blog.bdoughan.com/2010/07/jpa-entities-to-xml-bidirectional.html
The exception can be seen if a string is returned instead of the POJO object and the marshaling is done manually.

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Java is a programming language and computing platform first released by Sun Microsystems in 1995.

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I think you are confused . #Entity is the annotation used by HQL to identify the so called mapped entities. Both of the entities are annotated by them.

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