I am a +1 for this idea. Sounds interesting.  Would a branch be useful  
to you?

On Oct 15, 2008, at 4:44 PM, Nathan Hammond wrote:

>
> Well, I'm over a week late, but I'm claiming my first piece of the
> taxonomy segment if nobody tells me not to. First on my list is to
> provide is an MPTT class with a series of methods that allow for
> simple hierarchical storing of data in a database. The functionality
> is easily split into four categories along the lines of CRUD:
>
> Creating
> appendChild(parentNodeID, newNode, [sort])
> insertBefore(siblingNodeID, newNode)
> insertAfter(siblingNodeID, newNode)
>
> Reading
> getNode(nodeID)
> getSiblings(nodeID)
> getParent(nodeID)
> getPath(nodeID)
> getDescendants(nodeID)
>
> Updating
> sortLevel(nodeOnLevelID, TIME || NODENAME)
> replaceNode(oldNodeID, newNode)
> moveNode(method, relatedNodeID, targetNodeID)
>
> Deleting
> remove(nodeID)
>
> I will be making one schema change to make things as fast as possible:
> the addition of mptt_parent into the "terms" table. I don't see this
> as a problem since this table is presently unused. That will allow for
> single-query sibling selection without parsing the descendants out of
> the selection.
>
> After this class is complete in a standalone form I'll figure out how
> to reconcile it with Habari--I'm currently unfamiliar with how all the
> underlying sections work and where all changes will need to appear.
>
> Also, something I'm considering for the future, I'm planning a second
> class that implements/extends this base-level MPTT class with chaining
> (ala JavaScript, jQuery).
>
> If you've any objections, speak now or forever hold your peace. I'm
> starting on this within the hour.
> >


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