Composite Primary key

<?xml version='1.0' encoding='UTF-8'?>

<!DOCTYPE hibernate-configuration PUBLIC

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

"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

<session-factory>

<property name="connection.driver_class">oracle.jdbc.driver.OracleDriver

</property>

<property name="connection.url">jdbc:oracle:thin:@www.javaoops.com:1521:XE</property>

<property name="connection.username">admin</property>

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

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

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

<property name="hbm2ddl.auto">update</property>

<mapping resource="Product.hbm.xml"></mapping>

</session-factory>

</hibernate-configuration>

<?xml version="1.0"?>

<!DOCTYPE hibernate-mapping PUBLIC

"-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>

<class name="str.Product" table="products">

<composite-id>

<key-property name="productId" column="pid" />

<key-property name="proName" column="pname" length="10" />

</composite-id>

<property name="price"/>

</class>

</hibernate-mapping>