[jdom-interest] streaming document output

Rolf Lear jdom at tuis.net
Thu Apr 11 11:30:19 PDT 2013

Oh, are you using 'raw' output, or are you making it 'pretty' or other 


On 11/04/2013 1:29 PM, Patrick Dowler wrote:
> We have a few web services that send XML documents in the response. 
> The documents can be large and when they are there is always one spot 
> where there is an arbitrarily long list of child elements.
> With jdom1 we had implemented a subclass of Element for the element 
> with the long list of child elements and then had the iterator over 
> that list dynamically generate the children. Since the XMLOutputter 
> used indexed access rather than the iterator, we also had to subclass 
> it and override the list access. That works fine at the time.
> No we are porting to jdom2 and I see that the outputter still uses 
> indexed access; that is a shame given all the comments in the code 
> about how the iterator is generally better than having to call size() 
> on the lists. It would be really nice and enable people to implement 
> customisations if jdom2 used the iterators rather than the indexing 
> throughout the codebase. Is that a lot of work?
> The further problem we have right now is that XMLOutputter is final so 
> we can't trivially port our jdom1 code. Is implementing a custom 
> XMLOutputProcessor the right place to do that? The change we'd be 
> making is to change it to use iterators... is that something that 
> should go into the core library?
> For XMLOutputProcessor, I am looking specifically at these methods:
> process(Writer,Format,Element)
> process(Writer,Format,List)
> Is that the place to change to iterators?

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