Example code

1. Code Sample

2. Dependency Injection (1) package au.com.sgb.example.t1.service; … public class TradeServiceImpl implements TradeService { TradeDAO dao; public TradeServiceImpl(TradeDAO dao) { this.dao = dao; } @Transactional public Trade newTrade(Equity e, String s, Double qty) { Trade t = new Trade(e, s, qty); return save(t); } … public Trade save(Trade data) { return dao.save(data); }

3. Dependency Injection (2) <?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?> <!DOCTYPE beans PUBLIC &quot;-//SPRING//DTD BEAN//EN&quot; &quot;http://www.springframework.org/dtd/spring-beans.dtd&quot;> <beans <bean id=&quot; tradeDAO &quot; class=&quot;au.com.sgb.example.t1.dao.hibernate.TradeDAOImpl&quot; > <property name=&quot;sessionFactory&quot; ref=&quot;sessionFactory&quot;/> </bean> <bean id=&quot; tradeService &quot; class=&quot; au.com.sgb.example.t1.service.TradeServiceImpl &quot;> <constructor-arg ref=&quot; tradeDAO &quot; /> </bean …

4. DAO Implemenation Using Hibernate (1) package au.com.sgb.example.t1.dao.hibernate; … public class EquityDAOImpl extends HibernateDaoSupport implements EquityDAO { @Override public List<Equity> findByName(String name) { return getHibernateTemplate().find(&quot;from Equity e where e.name like ?&quot;, &quot;%&quot; + name + &quot;%&quot;); } @Override public List<Equity> findAll() { return getHibernateTemplate().find(&quot;from Equity e&quot;); }

5. DAO Implemenation Using Hibernate (2) @Override public Equity findById(int id) { List equities = getHibernateTemplate().find(&quot;from Equity e where e.equity_id = ?&quot;, id); if (equities == null || equities.size() == 0) { return null; } else { return (Equity) equities.get(0); } } @Override public Equity save(Equity data) { getHibernateTemplate().saveOrUpdate(data); return data; } }

6. Web Tier (1) <bean name=&quot; urlMapper &quot; class=&quot;org.springframework.web.servlet.handler.SimpleUrlHandlerMapping&quot; > <property name=&quot;mappings&quot;> <props> <prop key=&quot; /listequity.htm &quot;>listEquityController</prop> <prop key=&quot;/doequity.htm&quot;>doEquityController</prop> <prop key=&quot;/listtrade.htm&quot;>listTradeController</prop> <prop key=&quot;/dotrade.htm&quot;>doTradeController</prop> </props> </property> </bean> … <bean id=&quot; viewResolver &quot; class=&quot;org.springframework.web.servlet.view.InternalResourceViewResolver&quot;> <property name=&quot;viewClass&quot;><value>org.springframework.web.servlet.view.JstlView</value></property> <property name=&quot;prefix&quot;><value>/WEB-INF/jsp/</value></property> <property name=&quot;suffix&quot;><value>.jsp</value></property> </bean>

7. Web Tier (2) public class TradeListController extends AbstractController { TradeService tradeService; TradeListController(TradeService service) { this.tradeService = service; } @Override protected ModelAndView handleRequestInternal(HttpServletRequest arg0, HttpServletResponse arg1) throws Exception { List<Trade> ts = tradeService.findAll(); Map<String, Object> vals = new HashMap<String, Object>(); vals.put(&quot;trades&quot;, ts); return new ModelAndView(&quot;listtrade&quot;, vals); } }