Making Composite Key Through Hibernate

When we want to retrieve and inserted data through the Composite key in hibernate then the class must be implemented by a Serializable interface.

Syntax

Example:

1). Product.java - Create Bean or Pojo class for Product 

package product;
import java.io.Serializable;

public class ProductBean implements Serializable
{
   private int productId;
   private String productName;
   private double price;
   
   public int getProductId()
   {
      return productId;
   }
   public void setProductId( int productId )
   {
      this.productId = productId;
   }
   public String getProductName()
   {
      return productName;
   }
   public void setProductName( String productName )
   {
      this.productName = productName;
   }
   public double getPrice()
   {
      return price;
   }
   public void setPrice( double price )
   {
      this.price = price;
   }
}

2). product.hbm.XML- Map Pojo class with database table's column via hibernate mapping

3). hibernate.cfg.xml - Configure database access entry in .cfg file and map .hbm file  

<DTD--->

<hibernate-configuration>  
  
    <session-factory>  
        <property name="hbm2ddl.auto">update</property>  
        <property name="dialect">org.hibernate.dialect.Oracle9Dialect</property>  
        <property name="connection.url">jdbc:oracle:thin:@localhost:1521:xe</property>  
        <property name="connection.username">system</property>  
        <property name="connection.password">oracle</property>  
        <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>  
    <mapping resource="product.hbm.xml"/>  
    </session-factory>  
  
</hibernate-configuration> 

4). StoreProductData.java - Add product data via bean class into database using hibernate APIs