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From "zhang shaohua" <zsh...@gmail.com>
Subject Re: Spring bean implements dao interfaces automatically based on iBatis
Date Wed, 03 May 2006 23:32:23 GMT
I think this is a good job:)
2006/4/28, suntoe <qiangyt@technodia.com.cn>:
>
>
> http://dao-zero.sourceforge.net
>
> DaoZero is a small Java Spring bean class that can be used to reduce
> source
> of persistence tier which bases on Spring's iBatis support. It's not a
> wrapper of Spring iBatis support, but to replace your DAO bean class
> directly. In most cases, the only thing you will do is to declare a bean
> whose type is "daozero.ibatis.Dao" and tell DaoZero bean what's your DAO
> interface, then DaoZero bean will invoke iBatis mapped statement for you.
> No
> more need DAO implementation codes.
>
> DaoZero bean invokes iBatis mapped statement whose name is same as method
> name of DAO interface( or abstract class). Both count and index of mapped
> statement should be keeped same as method arguments for current
> implementation. DaoZero bean is a factory bean which implements
> org.springframework.beans.factory.FactoryBean and will create proxy object
> that implements DAO interface( or abstract class) for those beans need
> this
> bean which typically service beans. The proxy object takes repsonsibility
> for construct parameter map from invocation arguments and pass the
> parameter
> map to iBatis template method, such as queryForObject(), queryForList(),
> etc. The proxy object is smart enough to know what you want is a
> java.lang.List or a normal Object( but by current DaoZero release, it
> doen't
> support queryForMap() now. ).
>
> That proxy object is created from different way decided by whether
> required
> DAO type is interface or not. If it is interface, the proxy is created
> using
> standard JDK proxy(java.lang.reflect.Proxy), else, the proxy is created
> using CGLIB enhancer(net.sf.cglib.proxy.Enhancer). For a CGLIB proxy, it
> will try to implement all public abstract methods for the abstract DAO
> class
> proxied.
>
> In fact, I hacked iBatis, have to cast some iBatis interface to her
> internal
> implementation class, because I cannot found how to get parameter map's
> meta
> data by iBatis's API. (So sorry for the bad smell )
> --
> View this message in context:
> http://www.nabble.com/Spring-bean-implements-dao-interfaces-automatically-based-on-iBatis-t1524667.html#a4140726
> Sent from the iBATIS - User - Java forum at Nabble.com.
>
>

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