[GDL2] EODetailDataSource and EODisplayGroup

[Dirk Lattermann]

Hello,

an EODisplayGroup needs an EOEditingContext so that it can observe its 
objects. The docs say it should get the editing context from its data 
source in setDataSource:.

Now, how is this supposed to work with an EODetailDataSource, whose 
editingContext: method returns the editing context of the source's 
master object? Is it safe to assume that a data source will never 
"switch editing contexts"? And even then there's a problem because the 
detail data source's editing context isn't set until the detail data 
source is qualified with a master object, which usually means that the 
master data source has fetched and selected objects.  I don't think 
that's the case normally when setting up the display group, or is it?

Puzzled again,
Dirk