At 01:26 PM 11/5/2003, you wrote:
[EMAIL PROTECTED] wrote: > Could anybody show me how to use DAO Factory + DAO + ThrowawayBean2. I > don't know if DAO implementation itself could be a singleton and what > are best practices.
Typically, a DAO configuration is exposed as a singleton that you might access like this:
AccountDao dao = DaoConfig.getInstance().getAccountDao(); List list = dao.listByUserName(this.getUserName());
If you were using a ThrowawayBean2, then your subclass would include whatever properties the DAO signature required (shown as this.getUserName() here). If the signature took a property bean, then ThrowawayBean2 might implement the appropriate interface, so you'd have something like:
AccountDao dao = DaoConfig.getInstance().getAccountDao(); int value = dao.storeAccount(this);
iBATIS includes a very nice DAO framework that works with any persistance strategy, including their own very fine SqlMap framework. Highly recommended.
The iBATIS JPetstore3 application is a full-blown example of using iBATIS with Struts. Essentially, the ThrowawayBean3 combines the utility of the ActionForm and Actoin into one handy class.
I'm planning to do a version of JPetstore3 using Maverick, but that might be some time coming.
HTH, Ted.
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