RE: [CFCDev] Newbie approach to Composite Entity pattern.

[Brian Kotek]

It seems to me like this is diluting the cohesion of the ArticleBO. Should it really also be dealing with comments? I’m thinking probably not. Is there a way you can handle this relationship in a higher level class, like in a BlogContentManager? I think it would mean having having an ArticleDAO and a CommentDAO though, and an ArticleGateway and CommentGateway, so it would mean more classes for the BlogContentManager to deal with.   I’d be interested to hear what everyone else thinks as well.   -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Tuesday, January 11, 2005 2:31 AM To: cfcdev@cfczone.org Subject: [CFCDev] Newbie approach to Composite Entity pattern.   Hi,   I've got a concept i need to bounce off others, its similiar in its approach to say "Articles" has many "Comments"  (ie Article has-a comment(s)).   In my Approach (using the above basic example) i would create:   ArticleBO (Composite Entity)     - commentBO (Dependent Object1)     - commentBO (Dependent Object2) etc..     Is it save to say that the ArticleBO has methods like:   - setTitle(string) - setBody(string) - setPubDate(date) - addComment(commentBO) - removeComment(commentBO) - findCommentByID(string)   I guess what i'm trying to do is combine the efforts of a "Bean" and "Facade" into one object that my controller/container accesses. So in the event i add a comment to my article, i invoke addComment(), pass in a collection of arguments (or object) and it stores that information within itself.   I then pass that ArticleBO to my DAO, which stores all the Article "information" into say "Articles Table" and comments into "Comments" table or however i wish to implement storage (ie could serialize the entire bean to a wddx packet or something)   Is this a typical approach to objects that have many dependent objects. I read that "Composite Entity Bean" works like this (Or I may loose this in translation - probably the case).     Regards, -------------------------------------------------- Scott Barnes System Development Engineer   Goro Nickel Project Level 8, 201 Charlotte Street Brisbane QLD 4000 Email: [EMAIL PROTECTED]