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   Re: [xml-dev] What should TrAX look like? (Was: Re: [xml-dev] Article on

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Elliotte Harold wrote:
> It occurred to me that it might be possible to design this as some 
> sort of iterator interface like DOM's NodeIterator. Streaming 
> implementations  would only be able to walk this in a forward fashion.

I can see this working for pull parsers, but it's not clear to me how 
it might integrate with a callback-style API.

>  Then there could be a tree-based subclass of this interface that 
> added methods for moving backwards, and along the independent axes.

This is exactly what I proposed:

>> an object resembling a tree navigator that can be used to iterate 
>> over the nodes in the tree and retrieve individidual node objects 
>> (more complex but object model agnostic, should perhaps be combined 
>> with a property (a URI?) indicating the object model(s) supported).

As well as navigating around the tree (previous, next, first-child, 
parent) it could be used to retrieve properties of the current node 
(name, type, value), using a node adapter specific to the object model.
-- 
Chris Burdess





 

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