The idea is that the "grouper" and the "leaf" implement the same
interface and perhaps share an abstract parent -- this is named
"component" in the GoF Pattern. This is to avoid the following sort
of code when you are processing the tree:
if (x.isLeaf())
{
// process leaf
}
else
{
// process branch
}
You simple implement the appropriate behavior on the leaf/branch
appropriately. Often the branch simply summarizes the branches/leaves
below it.
On 3/26/07, Matt Welch <[EMAIL PROTECTED]> wrote:
> On 3/23/07, Scott Swank <[EMAIL PROTECTED]> wrote:
> > In short, the Gang of Four's "Composite" pattern.
> >
> > http://en.wikipedia.org/wiki/Composite_pattern
> >
> >
>
> Really? I briefly took a look at that pattern specifically and I didn't see
> the fit, but I'll take a closer look. Thanks for the advice.
>
> James, I currently have all of the objects that might be parents of children
> of each other implement an abstract class that provides the the two
> attributes that are the same between them all. I'll take a look at the
> TreeNodes that you suggested.
>
>
>
>
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--
Scott Swank
reformed mathematician
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