• From: "Costello, Roger L." <costello@m...>
• To: "xml-dev@l..." <xml-dev@l...>
• Date: Tue, 23 Jan 2018 22:54:48 +0000

Hi Folks,

I am dealing with XML trees.

No id/idrefs. No mixed content. 

Just plain old properly nested elements.

Suppose I have a pile of elements and I want a machine to assemble them into a tree of properly nested elements. The machine doesn't know the rules for assembly so I must tell it the constraints on the elements; in particular, the constraints on how they may be nested. 

Here's the list of constraints that I've come up with thus far:

1. An element cannot be a descendent of itself, i.e., no loops in the tree.

2. If elements e and e' are children of element E, then e cannot be a child of e' or vice versa.

What other constraints are there?

/Roger

• Follow-Ups:
  • Re: Constraints on the elements in a nested XML tree?
    • From: David Carlisle <d.p.carlisle@g...>