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Re: Two more NullPointerExceptions

From: Sean Owen <srowen@google.com>
Date: Fri, 30 Nov 2007 12:36:19 -0500
Message-ID: <e920a71c0711300936t16418es71726bb554371134@mail.gmail.com>
To: "Guido García Bernardo" <ggarciab@itdeusto.com>
Cc: public-mobileok-checker <public-mobileok-checker@w3.org>
Thank you again Guido. I think I have fixed each of these now and
committed the change to CVS!

On Nov 30, 2007 7:20 AM, Guido García Bernardo <ggarciab@itdeusto.com> wrote:
>
> Hi,
>
> I'd like to share with you some lines I've had to fix to run mobileok
> without problems:
>
>
> A. Class HTTPXHTMLResource
>
> In the validateMarkup and validateMobile methods, calls to getBody()
> cause a NullPointerException when the body property is null :
>
> xmlReader.parse(new InputSource(new StringReader(getBody())));
>
> Maybe a check could be added:
>
> String body = getBody();
> if (body != null) {
>         xmlReader.parse(new InputSource(new StringReader(body)));
> }
>
>
> B. Class HTTPXHTMLResource
>
> In the extractImages method, if the srcAttribute is null, it causes a
> NullPointerException :
>
> final Node srcAttribute = node.getAttributes().getNamedItem("src");
> // TODO look for right kind of links
> try {
>         uris.add(new URI(srcAttribute.getNodeValue()));
> } catch ...
> }
>
> Maybe a check could also be added:
>
> final Node srcAttribute = node.getAttributes().getNamedItem("src");
> if (srcAttribute != null) {
>         // TODO look for right kind of links
>         try {
>                 uris.add(new URI(srcAttribute.getNodeValue()));
>         } catch ...
>         }
> }
>
>
> C. CharacterEncodingSupportTest
>
> When testing pages like
> http://www.cheaperthanhotels.co.uk/United-Kingdom/London/Earls-Court/Lord-Jim-Hotel-London-L22244R.htm
>
> That have more than two Content-Type meta tags in the html headers:
>
> <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
> <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
>
> That makes CharacterEncodingSupportTest to fail:
>
> org.w3c.mwi.mobileok.basic.TestException: CharacterEncodingSupportTest
> at
> org.w3c.mwi.mobileok.basic.AbstractXSLTTestImplementation.runTest(AbstractXSLTTestImplementation.java:45)
> at
> ...
>
> Caused by: net.sf.saxon.trans.DynamicError: A sequence of more than one
> item is not allowed as the first argument of lower-case() ("text/html;
> charset=utf-8", "text/html; charset=utf-8")
>
> It is not a very common case, but it'd be great to fix it if possible.
>
>
> Thank you very much,
> --
> Guido García Bernardo
> IT Deusto
>
>
Received on Friday, 30 November 2007 17:36:47 GMT

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