// array de string para agregar todos tus archivos de configuración de spring
private static final String[] SPRING_CONFIG_FILES =
new String[]{"source/spring/config/xxxxxx-db-context.xml", "source/spring/config/xxxxxxx-param-context.xml"};

// carga el application context de Spring
 FileSystemXmlApplicationContext appContext = new FileSystemXmlApplicationContext(SPRING_CONFIG_FILES);
// Obtiene el bean del session factory
 AnnotationSessionFactoryBean annotationSF = (AnnotationSessionFactoryBean)  appContext.getBean("&sessionFactory");
// si quieres eliminar el schema de la base de datos
 annotationSF.dropDatabaseSchema();
// para crear nuevamente el schema de la base de datos
 annotationSF.createDatabaseSchema();

<bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${datasource.classname}" />
        <property name="url" value="${datasource.urldb}" />
        <property name="username" value="${datasource.userbd}" />
        <property name="password" value="${datasource.pass}" />
    </bean>
 
    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="annotatedClasses">
          <list>
              <value>Clase1</value>
              <value>Clase2</value>
          </list>
        </property>
        <property name="hibernateProperties">
           <props>
                <!-- <prop key="hibernate.hbm2ddl.auto">update</prop> -->
                <prop key="hibernate.dialect">${datasource.dialect}
                </prop>
                <prop key="hibernate.show_sql">${datasource.showsql}</prop>
                <prop key="hibernate.hbm2ddl.delimiter">${datasource.delimited}</prop>
            </props>
        </property>
      </bean>