public class Foo{
  private String id;
  private String name;

   public String getId() {
    return id;
  }

  public void setId(String id) {
    this.id = id;
  }

  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }

}

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN"
                                   "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">

<hibernate-mapping>

    <class name="test.Foo" table="foo">

       <id name="id" type="string" unsaved-value="null" >
            <column name="id" length="32" not-null="true"/>
            <generator class="uuid.hex"/>
        </id>
     <property name="name">
           <column name="name"   sql-type="varchar(20)"/>
         </property>
    </class>

</hibernate-mapping>

cfg.addClass(test.Foo.class);

INFO  2004-03-05 11:55:56,413  net.sf.hibernate.cfg.Binder -- Mapping class: test.Foo -> foo
DEBUG 2004-03-05 11:55:56,413  net.sf.hibernate.cfg.Binder -- Mapped property: id -> id, type: string