[coldspring-dev] Factory DAO help

[Jared Rypka-Hauer]

You can, since it's the default for the extends attribute where none is specified, use web-inf.cftags.component as the value of an argument="" attribute and at least insure that you're passing in an object. It's not as intricate as creating a parent DAO but it does guarantee your type checking is better than any. It basically means "any object" as opposed to "anything possible". Inheritance isn't a bad thing if you need need it, but may not be necessary, especially if all the methods in the DAO are unique to that DAO -- you really don't need to bother extending an object unless there's at least one method that doesn't change from parent to child. I.e.: <cfargument name="someDao" type="web-inf.cftags.component" required="true" /> Just one more tool in the toolbox. J ------------------------------------------------ Jared C. Rypka-Hauer Continuum Media Group LLC http://www.web-relevant.com Member, Team Macromedia - ColdFusion "That which does not kill me makes me stranger." - Yonah Schmeidler On Mar 24, 2006, at 7:23 PM, Peter J. Farrell wrote: Chris Scott said the following on 3/24/2006 7:13 PM: Instead of changing the type to 'any' for your argument for setNewsDAO, why don't you make a mock abstract class for your newDAO, and then have both your newsDAO and newsDAO_XML extend the same class. Then you can have that base abstract class be the type for your argument. A good thing to do with interfaces by the way, which of course ARE coming! -Chris I ditto this as well.  I switched to always extending my DAOs and Gateways with a base class specific to the entity the DAO/Gateway represents last fall.  This was due to the fact that we use MySQL around here, there is a possibility of making one of our apps support other DBs. .Peter P.s.  Rock on Team Fusion ;-) --  Peter J. Farrell :: Maestro Publishing Member Team Mach-II :: Member Team Fusion http://blog.maestropublishing.com Create boilerplate beans and transfer objects for ColdFusion! Fire up a cup of Rooibos! http://rooibos.maestropublishing.com/