namespaces and prefixes in SAX2 [Re: Re: [xmlpull-user] Problems with namespace-prefixes Feature.]

Sean C. Truman wrote:

>>>Trying
>>>
>>>MXParser pullDriver = new org.xmlpull.mxp1.MXParser();
>>>pullDriver.setFeature(pullDriver.FEATURE_PROCESS_NAMESPACES,true);
>>>pullDriver.setFeature(pullDriver.FEATURE_REPORT_NAMESPACE_ATTRIBUTES,true);
>>>
>>>And get the following error
>>>
>>>org.xmlpull.v1.XmlPullParserException: unknown feature http://xmlpull.org/v1/doc/features.html#report-namespace-prefixes
>>>at org.xmlpull.mxp1.MXParser.setFeature(MXParser.java:554)
>>>at test.test.<init>(test.java:19)
>>>at test.test.main(test.java:27)
>>>
>>>Am I doing something wrong?
>>>
>>>      
>>>
>>hi Sean,
>>
>>you are not doing anything wrong instead you have found bug in our 
>>documentation (thanks!) as this feature was supposed to be optional 
>>(this how unit tests check for it) and it is currently not implemented 
>>in MXP1. i will fix documentation about it soon.
>>
>>also implementing it in MXP1 is on my TODO queue but i can not tell when 
>>i may get around to have it done however i wonder why do you want to use 
>>it? even if this feature is off you can still access all namespace 
>>declarations just you can not reproduce exact order of all attributes. 
>>how important support for it is to you? let me know and i can move it to 
>>higher priority TODO queue if necessary :-)
>>
>>thanks,
>>
>>alek
>>    
>>
>
>Alek,
>
>I am using the SAX2 Driver that is provided by your API.  Problem is I cannot get all the attributes without this being turned on. (I am currently using the alfread driver). 
>
hi,

if you turn namespaces off you will get all attributes

  driver.setFeature("http://xml.org/sax/features/namespaces", false);

but i guess you want to use namespaces?

>For example The following line only returns 3 attributes with your parser.
>
><SOAP-ENV:Envelope xmlns="http://schemas.xmlsoap.org/soap/envelope/" xmlns:si="http://soapinterop.org/xsd" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
></SOAP-ENV:Envelope>
>
note that this is exaclty as required default for SAX2 parsers (see 
section *Configuring Namespace Support *in 
http://www.saxproject.org/?selected=namespaces): if you have namespace 
feature enabled you get attributes and not namespace declarations by 
default you can collect all namespace declarations by using 
*ContentHandler.*|*startPrefixMapping 
<http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html#startPrefixMapping%28java.lang.String,%20java.lang.String%29> 
and *||*endPrefixMapping 
<http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html#endPrefixMapping%28java.lang.String%29>*|)

however as i see that this may be important both for XmlPullParser and 
SAX2 driver i will work on it in short future to add support for 
http://xml.org/sax/features/namespace-prefixes feature.

thanks,

alek

-- 
"Mr. Pauli, we in the audience are all agreed that your theory is crazy. 
What divides us is whether it is crazy enough to be true." Niels H. D. Bohr



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