How to insert into two tables from jsp by using spring mvc and hibernate - spring

Question

I want to insert into two tables from jsp using spring mvc4 and hibernate.
Here is my two model class.
1)Employee.java
package com.websystique.springmvc.model;
import java.math.BigDecimal;
import javax.persistence.CascadeType;
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.OneToOne;
import javax.persistence.Table;
import javax.validation.constraints.Digits;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
import org.hibernate.annotations.Cascade;
import org.hibernate.annotations.Type;
import org.hibernate.validator.constraints.NotEmpty;
import org.joda.time.LocalDate;
import org.springframework.format.annotation.DateTimeFormat;
import com.websystique.springmvc.model.UserLogin;;
#Entity
#Table(name="EMPLOYEE")
public class Employee {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
#Size(min=3, max=50)
#Column(name = "NAME", nullable = false)
private String name;
#NotNull
#DateTimeFormat(pattern="dd/MM/yyyy")
#Column(name = "JOINING_DATE", nullable = false)
#Type(type="org.jadira.usertype.dateandtime.joda.PersistentLocalDate")
private LocalDate joiningDate;
#NotNull
#Column(name = "SALARY", nullable = false)
private int salary;
#NotEmpty
#Column(name = "SSN", unique=true, nullable = false)
private String ssn;
#Column(name="emp_id",nullable=true)
private String emp_id;
public UserLogin getUserlogin() {
return userlogin;
}
public void setUserlogin(UserLogin userlogin) {
this.userlogin = userlogin;
}
public String getEmp_id() {
return emp_id;
}
public void setEmp_id(String emp_id) {
this.emp_id = emp_id;
}
#OneToOne(targetEntity=UserLogin.class,cascade=CascadeType.ALL)
#JoinColumn(name="emp_id",referencedColumnName="emp_id",insertable=false, updatable=false)
private UserLogin userlogin;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public LocalDate getJoiningDate() {
return joiningDate;
}
public void setJoiningDate(LocalDate joiningDate) {
this.joiningDate = joiningDate;
}
public int getSalary() {
return salary;
}
public void setSalary(int salary) {
this.salary = salary;
}
public String getSsn() {
return ssn;
}
public void setSsn(String ssn) {
this.ssn = ssn;
}
#Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + id;
result = prime * result + ((ssn == null) ? 0 : ssn.hashCode());
return result;
}
#Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (!(obj instanceof Employee))
return false;
Employee other = (Employee) obj;
if (id != other.id)
return false;
if (ssn == null) {
if (other.ssn != null)
return false;
} else if (!ssn.equals(other.ssn))
return false;
return true;
}
#Override
public String toString() {
return "Employee [id=" + id + ", name=" + name + ", joiningDate="
+ joiningDate + ", salary=" + salary + ", ssn=" + ssn + "]";
}
}
2)UserLogin.java
package com.websystique.springmvc.model;
import java.io.Serializable;
import javax.persistence.CascadeType;
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.OneToOne;
import javax.persistence.PrimaryKeyJoinColumn;
import javax.persistence.Table;
import org.hibernate.annotations.GenericGenerator;
#Entity
#Table(name="users")
public class UserLogin implements Serializable{
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
#Column(name="emp_id", unique=true, nullable=true)
private String emp_id;
#Column(name="user_name",nullable=false)
private String user_name;
#Column(name="password",nullable=false)
private String password;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUser_name() {
return user_name;
}
public void setUser_name(String user_name) {
this.user_name = user_name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
And here is my jsp page(registration.jsp)
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%# taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<%# taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Employee Registration Form</title>
<style>
.error {
color: #ff0000;
}
</style>
</head>
<body>
<h2>Registration Form</h2>
<form:form method="POST" modelAttribute="employee">
<form:input type="hidden" path="id" id="id"/>
<table>
<tr>
<td><label for="name">Name: </label> </td>
<td><form:input path="name" id="name"/></td>
<td><form:errors path="name" cssClass="error"/></td>
</tr>
<tr>
<td><label for="user_name">User Name: </label> </td>
<td><form:input path="user_name" id="user_name"/></td>
<td><form:errors path="user_name" cssClass="error"/></td>
</tr>
<tr>
<td><label for="pwd">Password: </label> </td>
<td><form:input type="password" path="password" id="password"/></td>
<td><form:errors path="password" cssClass="error"/></td>
</tr>
<tr>
<td><label for="joiningDate">Joining Date: </label> </td>
<td><form:input path="joiningDate" id="joiningDate"/></td>
<td><form:errors path="joiningDate" cssClass="error"/></td>
</tr>
<tr>
<td><label for="salary">Salary: </label> </td>
<td><form:input path="salary" id="salary"/></td>
<td><form:errors path="salary" cssClass="error"/></td>
</tr>
<tr>
<td><label for="ssn">SSN: </label> </td>
<td><form:input path="ssn" id="ssn"/></td>
<td><form:errors path="ssn" cssClass="error"/></td>
</tr>
<tr>
<td colspan="3">
<c:choose>
<c:when test="${edit}">
<input type="submit" value="Update"/>
</c:when>
<c:otherwise>
<input type="submit" value="Register"/>
</c:otherwise>
</c:choose>
</td>
</tr>
</table>
</form:form>
<br/>
<br/>
Go back to List of All Employees
</body>
</html>
Here is my controller
#RequestMapping(value = { "/new" }, method = RequestMethod.POST)
public String saveEmployee(#Valid Employee employee,#Valid UserLogin userLogin, BindingResult result,
ModelMap model) {
System.out.println("inside controller");
System.out.println("result>>>> "+result);
if (result.hasErrors()) {
System.out.println("inside controller1111111111");
return "registration";
}
if(!service.isEmployeeSsnUnique(employee.getId(), employee.getSsn())){
System.out.println("inside controller1111111111222222222222222222222");
FieldError ssnError =new FieldError("employee","ssn",messageSource.getMessage("non.unique.ssn", new String[]{employee.getSsn()}, Locale.getDefault()));
result.addError(ssnError);
return "registration";
}
String emp="Emp-"+employee.getId()+"-"+employee.getName();
System.out.println("emp>>> "+emp);
employee.setEmp_id(emp);
service.saveEmployee(employee);
userservice.saveUser(userLogin);
model.addAttribute("success", "Employee " + employee.getName() + " registered successfully");
return "success";
}
So I want to save user_name and password into login table and rest of the data want to save into another table. Is there anyone who can help me how to insert data into two tables. I searched a lot but did not get fruitful result. Any link for this problem is also appreciated. Thanks in advance

Answer 1

You can use entity inheritance. Check this http://www.thoughts-on-java.org/complete-guide-inheritance-strategies-jpa-hibernate/
. Select strategy which fits your reqirements.