package com.mkyong.stock;

 import javax.persistence.CascadeType;

 import javax.persistence.Column;

 import javax.persistence.Entity;

 import javax.persistence.FetchType;

 import javax.persistence.GeneratedValue;

 import static javax.persistence.GenerationType.IDENTITY;

 import javax.persistence.Id;

 import javax.persistence.OneToOne;

 import javax.persistence.Table;

 import javax.persistence.UniqueConstraint;

 @Entity

 @Table(name = "stock", catalog = "mkyongdb", uniqueConstraints = {

         @UniqueConstraint(columnNames = "STOCK_NAME"),

         @UniqueConstraint(columnNames = "STOCK_CODE") })

 public class Stock implements java.io.Serializable {

     private Integer stockId;

     private String stockCode;

     private String stockName;

     private StockDetail stockDetail;

     public Stock() {

     }

     public Stock(String stockCode, String stockName) {

         this.stockCode = stockCode;

         this.stockName = stockName;

     }

     public Stock(String stockCode, String stockName, StockDetail stockDetail) {

         this.stockCode = stockCode;

         this.stockName = stockName;

         this.stockDetail = stockDetail;

     }

     @Id

     @GeneratedValue(strategy = IDENTITY)

     @Column(name = "STOCK_ID", unique = true, nullable = false)

     public Integer getStockId() {

         return this.stockId;

     }

     public void setStockId(Integer stockId) {

         this.stockId = stockId;

     }

     @Column(name = "STOCK_CODE", unique = true, nullable = false, length = 10)

     public String getStockCode() {

         return this.stockCode;

     }

     public void setStockCode(String stockCode) {

         this.stockCode = stockCode;

     }

     @Column(name = "STOCK_NAME", unique = true, nullable = false, length = 20)

     public String getStockName() {

         return this.stockName;

     }

     public void setStockName(String stockName) {

         this.stockName = stockName;

     }

     @OneToOne(fetch = FetchType.LAZY, mappedBy = "stock", cascade = CascadeType.ALL)

     public StockDetail getStockDetail() {

         return this.stockDetail;

     }

     public void setStockDetail(StockDetail stockDetail) {

         this.stockDetail = stockDetail;

     }

 }

 package com.mkyong.stock;

 import java.util.Date;

 import javax.persistence.Column;

 import javax.persistence.Entity;

 import javax.persistence.FetchType;

 import javax.persistence.GeneratedValue;

 import javax.persistence.Id;

 import javax.persistence.OneToOne;

 import javax.persistence.PrimaryKeyJoinColumn;

 import javax.persistence.Table;

 import javax.persistence.Temporal;

 import javax.persistence.TemporalType;

 import org.hibernate.annotations.GenericGenerator;

 import org.hibernate.annotations.Parameter;

 @Entity

 @Table(name = "stock_detail", catalog = "mkyongdb")

 public class StockDetail implements java.io.Serializable {

     private Integer stockId;

     private Stock stock;

     private String compName;

     private String compDesc;

     private String remark;

     private Date listedDate;

     public StockDetail() {

     }

     public StockDetail(Stock stock, String compName, String compDesc,

             String remark, Date listedDate) {

         this.stock = stock;

         this.compName = compName;

         this.compDesc = compDesc;

         this.remark = remark;

         this.listedDate = listedDate;

     }

     @GenericGenerator(name = "generator", strategy = "foreign",

     parameters = @Parameter(name = "property", value = "stock"))

     @Id

     @GeneratedValue(generator = "generator")

     @Column(name = "STOCK_ID", unique = true, nullable = false)

     public Integer getStockId() {

         return this.stockId;

     }

     public void setStockId(Integer stockId) {

         this.stockId = stockId;

     }

     @OneToOne(fetch = FetchType.LAZY)

     @PrimaryKeyJoinColumn

     public Stock getStock() {

         return this.stock;

     }

     public void setStock(Stock stock) {

         this.stock = stock;

     }

     @Column(name = "COMP_NAME", nullable = false, length = 100)

     public String getCompName() {

         return this.compName;

     }

     public void setCompName(String compName) {

         this.compName = compName;

     }

     @Column(name = "COMP_DESC", nullable = false)

     public String getCompDesc() {

         return this.compDesc;

     }

     public void setCompDesc(String compDesc) {

         this.compDesc = compDesc;

     }

     @Column(name = "REMARK", nullable = false)

     public String getRemark() {

         return this.remark;

     }

     public void setRemark(String remark) {

         this.remark = remark;

     }

     @Temporal(TemporalType.DATE)

     @Column(name = "LISTED_DATE", nullable = false, length = 10)

     public Date getListedDate() {

         return this.listedDate;

     }

     public void setListedDate(Date listedDate) {

         this.listedDate = listedDate;

     }

 }

<?xml version="1.0" encoding="utf-8"?>

<!DOCTYPE hibernate-configuration PUBLIC

"-//Hibernate/Hibernate Configuration DTD 3.0//EN"

"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

<session-factory>

    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>

    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/mkyongdb</property>

    <property name="hibernate.connection.username">root</property>

    <property name="hibernate.connection.password">password</property>

    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>

    <property name="show_sql">true</property>

    <mapping class="com.mkyong.stock.Stock" />

    <mapping class="com.mkyong.stock.StockDetail" />

</session-factory>

</hibernate-configuration>

package com.mkyong;

import java.util.Date;

import org.hibernate.Session;

import com.mkyong.stock.Stock;

import com.mkyong.stock.StockDetail;

import com.mkyong.util.HibernateUtil;

public class App {

	public static void main(String[] args) {

		System.out.println("Hibernate one to one (Annotation)");

		Session session = HibernateUtil.getSessionFactory().openSession();

		session.beginTransaction();

		Stock stock = new Stock();

		stock.setStockCode("7052");

		stock.setStockName("PADINI");

		StockDetail stockDetail = new StockDetail();

		stockDetail.setCompName("PADINI Holding Malaysia");

		stockDetail.setCompDesc("one stop shopping");

		stockDetail.setRemark("vinci vinci");

		stockDetail.setListedDate(new Date());

		stock.setStockDetail(stockDetail);

		stockDetail.setStock(stock);

		session.save(stock);

		session.getTransaction().commit();

		System.out.println("Done");

	}

}