Hibernate One to One example and tutorial Annotation based


One to One Unidirectional Association Mapping Annotation

@OneToOne(cascade = CascadeType.ALL)




More example

hibernate one to one mapping example
hibernate many to many mapping example
hibernate one to many mapping example
hibernate many to one mapping example

hibernate inheritance table per subclass
hibernate single table inheritance
hibernate inheritance joined


Code

Student.java

package com.candidjava.hibernate;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToOne;
import javax.persistence.Table;

@Entity
@Table(name = "STUDENT")
public class Student {

	private long studentId;
	private String studentName;
	private Address studentAddress;

	public Student() {
	}

	public Student(String studentName, Address studentAddress) {
		this.studentName = studentName;
		this.studentAddress = studentAddress;
	}

	@Id
	@GeneratedValue
	@Column(name = "STUDENT_ID")
	public long getStudentId() {
		return this.studentId;
	}

	public void setStudentId(long studentId) {
		this.studentId = studentId;
	}

	@Column(name = "STUDENT_NAME", nullable = false, length = 100)
	public String getStudentName() {
		return this.studentName;
	}

	public void setStudentName(String studentName) {
		this.studentName = studentName;
	}

	@OneToOne(cascade = CascadeType.ALL)
	public Address getStudentAddress() {
		return this.studentAddress;
	}

	public void setStudentAddress(Address studentAddress) {
		this.studentAddress = studentAddress;
	}

}


Address.java

package com.candidjava.hibernate;


import javax.persistence.Column;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;


@Entity
@Table(name = "ADDRESS")
public class Address {


	private long addressId;
	private String street;
	private String city;
	private String state;
	private String zipcode;


	public Address() {
	}


	public Address(String street, String city, String state, String zipcode) {
		this.street = street;
		this.city = city;
		this.state = state;
		this.zipcode = zipcode;
	}


	@Id
	@GeneratedValue
	@Column(name = "ADDRESS_ID")
	public long getAddressId() {
		return this.addressId;
	}


	public void setAddressId(long addressId) {
		this.addressId = addressId;
	}


	@Column(name = "ADDRESS_STREET", nullable = false, length = 250)
	public String getStreet() {
		return this.street;
	}


	public void setStreet(String street) {
		this.street = street;
	}


	@Column(name = "ADDRESS_CITY", nullable = false, length = 50)
	public String getCity() {
		return this.city;
	}


	public void setCity(String city) {
		this.city = city;
	}


	@Column(name = "ADDRESS_STATE", nullable = false, length = 50)
	public String getState() {
		return this.state;
	}


	public void setState(String state) {
		this.state = state;
	}


	@Column(name = "ADDRESS_ZIPCODE", nullable = false, length = 10)
	public String getZipcode() {
		return this.zipcode;
	}


	public void setZipcode(String zipcode) {
		this.zipcode = zipcode;
	}


}


save or inserting record into one to one annotation mapping

	public void insertStudent(Student bk) {

		try {
			Session s = getSession();
			Transaction transaction = s.beginTransaction();
			s.save(bk);
			transaction.commit();


		} catch (HibernateException e) {
			e.printStackTrace();
		}


	}


Get or fetch record from One to one annotation mapping

	public Student getStudent(long id) {

		Student ls = new Student();
		try {
			Session s = getSession();
			ls = (Student) s.load(Student.class, id);
			// System.out.println(ls.size());
		} catch (HibernateException e) {
			System.out.println(e.getMessage());
		}
		return ls;
	}


Download

One to One mapping Annotation example war

One to One mapping Annotation example zip



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