TypeError: Cannot read property '$ns' of undefined

[ottosson]

When I try to parse a xml file I get the error "TypeError: Cannot read property '$ns' of undefined", and it seems to be coming from xml2js. I just copied and pasted the example code:

xml4js.parseString(xml, {downloadSchemas: true}, function (err, result) {
    console.log(util.inspect(result, false, null));
});

There is no problem parsing the same xml with xml2js.

I use xml2js 0.4.9 and xml4js 0.1.2.

[mitar]

Sorry, I will not be able to help you much here without more data. Can you do a pull request with a failing test case?

[bogdanbujdea]

Hi! I'm facing the same issue. Here's an XML example:

<?xml version='1.0' encoding='UTF-8'?><entry xmlns='http://www.w3.org/2005/Atom' xmlns:gsa='http://schemas.google.com/gsa/2007'><id>http://213.229.151.228:8002/feeds/status/documentStatus</id><updated>2015-10-15T08:33:58.161Z</updated><app:edited xmlns:app='http://purl.org/atom/app#'>2015-10-15T08:33:58.161Z</app:edited><link rel='self' type='application/atom+xml' href='https://213.229.151.228:8002/feeds/status/documentStatus'/><link rel='edit' type='application/atom+xml' href='https://213.229.151.228:8002/feeds/status/documentStatus'/><gsa:content name='entryID'>documentStatus</gsa:content><gsa:content name='servedURLs'>1,180</gsa:content><gsa:content name='crawlPagesPerSecond'>0.03</gsa:content><gsa:content name='crawledURLsToday'>0</gsa:content><gsa:content name='foundURLs'>96,362</gsa:content><gsa:content name='filteredBytes'>208,478,568,448</gsa:content><gsa:content name='errorURLsToday'>0</gsa:content></entry>

[mlooney]

Same issue here:

<?xml version="1.0"?>
<AmazonEnvelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="amzn-envelope.xsd">

xmllint has no problem, and validates the document successfully. Note that amzn-envelope.xsd includes all sorts of other xsds as well.

(updated to include xml preamble in example.)

[mitar]

Yes, as I mentioned in other issues, I made this package for a particular XSD I had and developed features only for what was needed. I know some things are not implemented. But at the moment I do not have time to further work on this, especially because it works for me. But I would be glad to accept pull requests adding more features.

[mitar]

One thing, this package uses a fork of xml2js because two pull requests have not been merged upstream. Are you using that fork or not?

[mitar]

Can people create pull requests with tests which are failing?

[mitar]

OK, and people, those are different issues here. Do not all write in the same ticket. Are you all getting Cannot read property '$ns' of undefined? You are not.

@TheWinDev: You problem is that for http://www.w3.org/2005/Atom namespace there is no XML Schema definition (XSD) location provided.

@mlooney: Your example is not a valid XML?

[mlooney]

no, that particular snippet is not, but the document is rather large, so i didn't paste it in its entirety. I'll come up with a smaller test case to reproduce.

[mlooney]

demo:

https://gist.github.com/mlooney/b9c489ee01b7f3fd3102f2efa31313a9

[mitar]

I see, noNamespaceSchemaLocation seems to not be supported. That should be a fairly straightforward addition here: https://github.com/peerlibrary/node-xml4js/blob/master/lib/xsd.js#L515