spring boot entitymanager example
entityManager.getTransaction().begin();
entityManager.remove(emp);
entityManager.getTransaction().commit();spring boot entitymanager example
entityManager.getTransaction().begin();
entityManager.remove(emp);
entityManager.getTransaction().commit();spring boot entitymanager example
EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory("persistence");
EntityManager entityManager = entityManagerFactory.createEntityManager();
entityManager.getTransaction().begin();
Employee employee = new Employee();
employee.setName("Sanjay");
// Save Entity
entityManager.persist(employee);
entityManager.getTransaction().commit();
System.out.println("Generated Employee ID = " + employee.getEmployeeId());spring boot entitymanager example
List<Employee> emplList= entityManager.createQuery("SELECT UPPER(e.name) FROM Employee e").getResultList();spring boot entitymanager example
package com.frugalis.entity;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name = "EMPLOYEE")
public class Employee {
private int employeeId;
private String name;
@Id
@Column(name = "EMPLOYEE_ID")
@GeneratedValue(strategy = GenerationType.IDENTITY)
public int getEmployeeId() {
return employeeId;
}
public void setEmployeeId(int employeeId) {
this.employeeId = employeeId;
}
@Column(name = "EMPLOYEE_NAME")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return "Employee [ID=" + employeeId + ", Name=" + name + "]";
}
}spring boot entitymanager example
//Select Query
List<Employee> emplList= entityManager.createQuery("SELECT e FROM Employee e").getResultList();Copyright © 2021 Codeinu
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