Justin, I have no objection. It should do no harm. However, note that:

(1) order should never be important, except for special case subclasses 
such as SimpleFeatureTypeImpl (see below), and

(2) LinkedHashMap conforms to the Map contract, which guarantees that 
order is *not* significant for equals/hashCode. Fixing iteration order 
does not fix this.

I experimented with using LinkedHashMap in ComplexTypeImpl to fix 
SimpleFeatureTypeImpl iteration order, but when I realised it did not 
fix equals/hashCode, I made all my changes to SimpleFeatureTypeImpl. If 
you support my position, please join me in nagging Jody to get my patch 
accepted. Please take a look at it; the patch comes with unit tests for 
iteration order consistency:
http://jira.codehaus.org/browse/GEOT-2338

More importantly, why do you want to change the order of properties? Do 
you have a non-simple use case in which they matter? If not, please 
consider my patch.

Kind regards,
Ben.


Justin Deoliveira wrote:
> Sorry, i did not mean tree map, just a map with predictable iteration 
> order. LinkedHashMap should do the trick.
> 
> Justin Deoliveira wrote:
>> Hi all,
>>
>> I think Ben may have brought this up recently, but looking at 
>> ComplexTypeImpl it seems property values are stored in a hash map, which 
>> totally throws away the order in which property descriptors are added to it.
>>
>> Any objection to making this a tree map as to maintain order?


-- 
Ben Caradoc-Davies <[email protected]>
Software Engineer, CSIRO Exploration and Mining
Australian Resources Research Centre
26 Dick Perry Ave, Kensington WA 6151, Australia

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