Re: [xmlblaster-devel] XPath filter

[Peter Antman <pra at mint.se>]

Hi, I added it today, with req and test ;-)

I also changed the build file so that it is possible to run a single
test, for example:

sh build.sh -Dtest.class=org.xmlBlaster.test.stress.MassiveSubTestOne runJunit

//Peter
On 25 Sep, Marcel Ruff wrote:
> Peter Antman wrote:
> 
>>On 25 Sep, Marcel Ruff wrote:
>>  
>>
>>>Peter Antman wrote:
>>>
>>>    
>>>
>>>>Hi,
>>>>I have written an XPath based I_Access filter. No rocket science, but
>>>>quite handy to have if you have many types of XML content beeing
>>>>published and.
>>>>
>>>>1. Do not want to place the XML content in the key
>>>>2. Do not want all XPath queries beeing placed against all published
>>>>  messages.
>>>>
>>>>With it you may subsribe on an exact oid, and only messages with that
>>>>OID will be matched against the XPathFilter.
>>>>
>>>>Do you want it in the XmlBlaster source tree? Now I have it in
>>>>org.xmlBlaster.engine.mime.xpath.
>>>>
>>>>(Its based on the Jaxen XPath engine, so three more jars has to be added
>>>>to XmlBlaster.
>>>>
>>>>//Peter
>>>> 
>>>>
>>>>      
>>>>
>>>It is  good idea to have an XPath content filter similar to the regex 
>>>plugin.
>>>
>>>The 3 additional jars - how big are they?
>>>    
>>>
>>
>>[pra at pra lib]$ ls -l xpath/
>>total 204
>>-rw-rw-r--    1 pra      pra        160967 Sep 25 10:10 jaxen-core.jar
>>-rw-rw-r--    1 pra      pra         13707 Sep 25 10:10 jaxen-dom.jar
>>-rw-rw-r--    1 pra      pra         23563 Sep 25 10:11 saxpath.jar
>>  
>>
> OK, not too big.
> 
>>
>>  
>>
>>>Should we stuff it into a "lib/mimeXpath" directory and specify
>>>them to the plugin when loaded  like:
>>>
>>>MimeAccessPlugin[XPathFilter][1.0]=org.xmlBlaster.engine.mime.xpath.XPathFileter,classpath=mimeXpath/jaxen.jar:mimeXpath/xy.jar
>>>
>>>    
>>>
>>
>>I tried that when running the testsuite with only the new
>>TestXPathSubscribeFilter, but it did not work at all. Got a strange and
>>basically untracable Linkade exception on DocumentBuilderFactory, wich
>>is not even part of the new jar-files.
>>
> Ahh, the classloader seems to have problems ...
> 
> This classloader approach works fine with the soap plugin (only very 
> experimental)
> so we should be able to solve it for your plugin as well?!
> 
> Marcel
> 
>>
>>  
>>
>>>Is it possible to reuse the lib/ant/xalan.jar ??
>>>    
>>>
>>
>>Nope.
>>
>>//Peter
>>  
>>
>>>Marcel
>>>
>>>    
>>>
>>
>>  
>>
> 

-- 
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Peter Antman	Chief Systems Architect, Business Development
Technology in Media, Box 34105 100 26 Stockholm
WWW: http://www.tim.se	WWW: http://www.backsource.org
Email: pra at tim.se	 
Phone: +46-(0)8-506 381 11 Mobile: 070-675 3942 
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