Ext.ComponentQuery.query() only creates an empty array

[Reggae]

I'm just migrating a large Application from ExtJs 3 to ExtJs 4 and I'm annoyed by one problem.

The application consists of a lot of classes named according to an MVC approach. For example (MyApp.Domain.View.PersonView).
If I try to refer to an Object which I can easily find by stepping up in the object-hierarchy from one ownerCt to the next one with Ext.ComponentQuery.query(<itemId of the searched Object>) I always get an empty Array back.

What did I misunderstood concerning Ext.ComponentQuery.query()?

[jay@moduscreate.com]

does your itemId contain periods?

[michiel]

I have a similar problem, where the alias of for example a view contains a period (e.g. widget.module1.tree). Is it correct that this doesn't work with the Component query?

[jay@moduscreate.com]

yes. You should use underscores.

[michiel]

Personally I would prefer to use periods, but underscores will work too. Anyway, good to know it now, at least

[jay@moduscreate.com]

Yeah, me too. Mainly because my IDE recognizes class names in strings. :-\