SV: SV: SV: [jdom-interest] Error in build : trinity

Per Norrman pernorrman at telia.com
Thu Nov 13 10:20:13 PST 2003


Hi again,

In your original post, there error message was 'trin ity'.
My gut reaction was that this was somehow a thread concurrency
problem; 'ity' is the ending of 'entity' which is a fairly common
word in XML error messages. I suspected a mixup, due to a race
condition or whatever.

Anyway, is this a consistent error message, i.e. does it always say
'trin ity' when it fails?

Does each request use its own XMLParser instance?

When the error occurs, have you tried logging the request content?

/pmn


> -----Ursprungligt meddelande-----
> Från: jdom-interest-admin at jdom.org 
> [mailto:jdom-interest-admin at jdom.org] För 
> Michael_Harley at bankofscotland.co.uk
> Skickat: den 13 november 2003 18:14
> Till: Per Norrman
> Kopia: Soo_Vinnicombe at bankofscotland.co.uk; jdom-interest at jdom.org
> Ämne: Re: SV: SV: [jdom-interest] Error in build : trinity
> 
> 
> 
> hello Per,
> 
> We have a class XMLParser, which contains the class variable;
> 
> Document doc;
> 
> When you mention concurrency are you considering the 
> getRootElement() method be 'synchronised'?
> 
> I have checked the dtd file used by the XML and the word 
> 'trinity' does not appear there either.
> 
> Thanks
> 
> Mike H
> 
> 
> 
> 
> 
> "Per Norrman" <pernorrman at telia.com> on 13/11/2003 15:58:09
> 
> To:    Michael Harley/MSD/Chester/CAPITAL BANK plc at BKSCOT
> cc:    Soo Vinnicombe/MSD/Chester/CAPITAL BANK plc at BKSCOT
> Subject:    SV: SV: [jdom-interest] Error in build : trinity
> 
> 
> Hi,
> 
> The doc variable seems to be a field, not a method local 
> variable. If this method is declared in the servlet, I would 
> expect very strange behaviour if you have two concurrent 
> requests, each acting on the same Document instance.
> 
> /pmn
> 
> > -----Ursprungligt meddelande-----
> > Från: Michael_Harley at bankofscotland.co.uk
> > [mailto:Michael_Harley at bankofscotland.co.uk]
> > Skickat: den 13 november 2003 15:52
> > Till: Per Norrman
> > Kopia: Soo_Vinnicombe at bankofscotland.co.uk
> > Ämne: Re: SV: [jdom-interest] Error in build : trinity
> >
> >
> >
> > hello Per,
> >
> > Our code is as follows. Each time an XML file is received 
> the servlet 
> > uses this method to parse the data...
> >
> > private void getRootElement( InputStream input ) throws 
> > org.jdom.JDOMException {
> >
> >       SAXBuilder builder = new SAXBuilder(true);
> >
> >       doc = builder.build( input );
> >
> >       root = doc.getRootElement();
> > }
> >
> > ...catch (org.jdom.JDOMException e ) {
> >       log.error ("Document Failed XML parsing "  + e.getMessage());
> >
> > Is there any reason you can see for this 'trinity' which is 
> mentioned?
> >
> > Thanks,
> >
> > Mike H
> >
> >
> >
> >
> >
> > "Per Norrman" <pernorrman at telia.com> on 13/11/2003 12:58:15
> >
> > To:    Michael Harley/MSD/Chester/CAPITAL BANK plc at BKSCOT,
> >        jdom-interest at jdom.org
> > cc:    Soo Vinnicombe/MSD/Chester/CAPITAL BANK plc at BKSCOT
> > Subject:    SV: [jdom-interest] Error in build : trinity
> >
> >
> > Hi,
> >
> > it smells like a concurrency problem. Have you made sure
> > that each request uses a unique builder instance?
> >
> > /pmn
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
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