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From David <cocoon-n...@max-imp.com>
Subject Re: multiple xpaths
Date Tue, 04 Oct 2005 13:43:28 GMT
Upayavira wrote:
> David wrote:
> 
>> Sylvain Wallez wrote:
>>
>>> David wrote:
>>>
>>>> I am writing a cocoon transformer and need to know when any of 
>>>> multiple xpaths match. I'm sure there must be a be a more efficient 
>>>> way then converting it to a DOM document and then running each xpath 
>>>> to get the nodelist of each.
>>>>
>>>> What is the best way to do this?
>>>
>>>
>>>
>>>
>>>
>>> The problem with XPath is that it's intrinsically tied to the DOM 
>>> hierarchical model. So you need to have a DOM ready to query the 
>>> document with XPath.
>>>
>>> You may want to have a look at STX [1], which uses a subset of XPath 
>>> that is suited to streamed processing.
>>>
>>> Sylvain
>>>
>>> [1] http://stx.sourceforge.net/
>>>
>>
>> I was looking at STX too but couldn't find a way to use it from Java. 
>> Anyone know how you use it without making an stx file?
>>
>> I understand the issue with xpaths and needing DOM. I know xalan has 
>> its Document Table Model (DTM) that improves on performance. Anyone 
>> know if we can tap into that without writting a XSL file?
> 
> 
> For an example of using STX in java, see the STX block, that allows you 
> to use STX as a normal Cocoon transformer.
> 
> Regards, Upayavira
> 

I looked in there already :-)
There are no Java examples. Only xmap and stx files. Maybe in some 
branch of cocoon?

David


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