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From robert burrell donkin <>
Subject Re: [betwixt] bug: output is in reverse order of input...
Date Sat, 15 Jun 2002 10:40:33 GMT
in terms of default orderings, though i can only think really of one 
implementation (alphabetic) it's probably better design to use an 
interface and give users the choice.

it might not solve jon's problem, though.

users should be able to set the order of the elements by creating .betwixt 
files or XMLBeanInfo classes. the bit that's going to be tricky about 
taking an order from the xml comes from preserving this functionality 
whilst also allowing the element order to be dynamically determined by the 
order in which they are read from the xml.

anyway, i think that better default ordering is something that betwixt 
should be able to do. i'd think that the best approach would be to create 
a general system (probably along the lines you suggest) and then see 
(later) if we can use it for dynamic reordering (if we have to). if you 
want to see what you come up with, i'll keep out of your way.

- robert

On Saturday, June 15, 2002, at 10:37 AM, Martin van den Bemt wrote:

> I was thinking more in the way of solving this issue by creating a
> couple of XMLOrdering objects, which can be used in a similar way as the
> NameMapper. I didn't write a use case yet for it, so it's just a mind
> spin, but this can give the flexibility for people to choose how they
> want to order it.. (or even write there own ordering).
> Mvgr,
> Martin
> On Sat, 2002-06-15 at 10:40, robert burrell donkin wrote:
>> On Thursday, June 13, 2002, at 09:27 PM, Jon Scott Stevens wrote:
>>> on 6/13/02 11:24 AM, "robert burrell donkin" <> 
>>> wrote:
>>>> am i right in assuming that ordering the element automatically from 
>>>> the
>>>> parsing would only work if the same XMLIntrospector instance is used 
>>>> to
>>>> read and write?
>>> That is the case right now for me anyway...
>> so this is a possible solution.
>> it's probably do-able but will be tricky to write and may have 
>> unfortunate
>> side effects.
>> i was thinking that maybe we should have betwixt order elements by 
>> default
>> in alphabetic order. at least that way it's obviously deterministic 
>> (since
>> bean introspection doesn't seem to be) and people who have control of
>> their own DTDs know how to write them so that they are compatible with
>> betwixt's defaults.
>> i don't know if this would solve your problem...
>> - robert
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