In order to populate an Article object one needs to pass in a struct that has all the required names for the component's instance variables.
An alternative approach is to use a bunch of <cfarguments>: <cfargument name="Title" > <cfargument name="Description" >
Now that <event-bean> is part of the framework, I'm going to deprecate FormObjectBeaner and recommend that bean components have an init() method using that alternative approach (so they can be initialized by <event-bean> without specifying the fields in the tag).
It seems to me like using a struct to initialize a component (and using an argumentCollection) seriously breaks enscapsulation because the user of the component must know the name of all your required instance vars.
Not really - this is used for form processing so the bean (component) is being initialized from the form fields passed in. The article.cfc is a little lazy in that respect - it probably should do this instead:
<cfset variables.instance = structNew() />
<cfset variables.instance.myVar1 = arguments.data.formField1 />
<cfset variables.instance.myVar2 = arguments.data.formField2 />
...The code in the example just happens to use the same names for the instance data as for the form fields.
Using <cfargument> seems to have better encapsulation, but it is more code to write.
Using <cfargument> to type validate form input data is not the way to go - you want to be able to accept the form input and then validate it but if you use <cfargument> the function won't accept the input data so you'll get a CF exception instead of a more controlled behavior.
Hope that helps clarify the intent.
Sean A Corfield -- http://www.corfield.org/blog/
"If you're not annoying somebody, you're not really alive." -- Margaret Atwood
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