Posted by Vincent B on 10/24/70 11:34

Hi,

Here is a quick OO design question. Suppose I have a few objects that I
would want rendered in HTML (Article, Category). What would be the best
OO way to render them?

If I am not mistaken,

1) the Strategy pattern would instruct me to pass the rendering to
another object. So I would have HTMLArticleRenderer that is constructed
using an Article object and that will render using
HTMLArticleRenderer->render(). If I wanted to add a PDF output, I could
just add a PDFArticleRenderer and switch renderer at runtime.

2) the Decorator pattern would instruct me to add a render() method to
every object (Article, Category) so they could be called in a tree-like
fashion.

I want your opinion on which would be the best solution or the
cleanest?

Regards,

Vincent

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