DataSource.fromXML loads more than just DataSources

[friemelaar]

Hello,

We have extended DataSourceLoader with DynamicDSGenerators, to load up DataSources based on database-extracted ds.xml files.

All worked well when we used long prefixes ("TAB_" and "TREE_").

However, when we modified the prefixes, the DynamicDSGenerator for the "R" prefix started - with its DataSource.fromXML() method - trying to load things like...
..."RowSpacerItem0" from an RPCManager.loadScreen-requested xml.ui file, most probably because its name matches the prefix.

It seems that if our app loads anything from XML, and the element's name matches one of the DynamicDSGenerator prefixes, the load request gets routed through the DataSourceLoader.

SmartGWT EE version:
v8.3p_2013-02-14/EVAL Deployment

Browser:
Firefox 20.0

Our exceptions are custom, so they would not provide you too much pertinent information.

If it seems like it might be hard to reproduce, please let us know - we will be happy to cobble together a test case.

Regards.

[Isomorphic]

It doesn't matter if the prefix is short. It sounds like what's actually happening is that you are now being invoked for lots of system DataSources, and you need to return null for these to avoid interfering with normal processing, but instead you are returning some kind of blank or invalid DataSource.