303452 - NS_ERROR_FACTORY_NOT_REGISTERED when trying to use nsIRDFService.GetDataSourceBlocking

Status: VERIFIED INVALID

(Toolkit Graveyard :: XULRunner, defect)

Description

[Andreas Otte]

XULRunner trunk:

I'm trying to read the installed locales in a XULRunner application. I used code
similar to that used in the firefox switchlocale extension by Benjamin Smedberg
which works fine with firefox 1.0. 

var rs =
Components.classes["@mozilla.org/rdf/rdf-service;1"].getService(Components.interfaces.nsIRDFService);
var cds = rs.GetDataSourceBlocking("rdf:chrome");


However with the XULRunner trunk and older versions I get 

[Exception... "Component returned failure code: 0x80040154
(NS_ERROR_FACTORY_NOT_REGISTERED) [nsIRDFService.GetDataSourceBlocking]" 
nsresult: "0x80040154 (NS_ERROR_FACTORY_NOT_REGISTERED)"  location: "JS frame ::
chrome://venn/content/options.js :: loadLocales :: line 34"  data: no]


As far as I can tell the RDFService is registered. There is at least one firefox
extension (SwitchProxy) which has the same problem reported against Deer Park
versions. Did something change with RDF access on the trunk?

Comment 1

[Jeff Walden [:Waldo]]

The rdf:chrome datasource no longer exists in trunk code, which is why your code
fails to work there.  You can still read the installed locales, however, using
the getLocalesForPackage method in nsIToolkitChromeRegistry, added in bug 299370.

Comment 2

[Jeff Walden [:Waldo]]

Oops, make that bug 299730.

Comment 3

[Darin Fisher]

v.

Comment 4

[Andreas Otte]

Thanks. What an interesting error message for the missing datasource. Sent me in
the wrong direction.

Any js sample code out there how to use the new GetLocalesForPackage?